+++ /dev/null
-Lucene Change Log
-
-For more information on past and future Lucene versions, please see:
-http://s.apache.org/luceneversions
-
-======================= Lucene 3.4.0 =======================
-
-Bug fixes
-
-* LUCENE-3251: Directory#copy failed to close target output if opening the
- source stream failed. (Simon Willnauer)
-
-* LUCENE-3255: If segments_N file is all zeros (due to file
- corruption), don't read that to mean the index is empty. (Gregory
- Tarr, Mark Harwood, Simon Willnauer, Mike McCandless)
-
-* LUCENE-3254: Fixed minor bug in deletes were written to disk,
- causing the file to sometimes be larger than it needed to be. (Mike
- McCandless)
-
-* LUCENE-3224: Fixed a big where CheckIndex would incorrectly report a
- corrupt index if a term with docfreq >= 16 was indexed more than once
- at the same position. (Robert Muir)
-
-* LUCENE-3334: If Java7 is detected, IOUtils.closeSafely() will log
- suppressed exceptions in the original exception, so stack trace
- will contain them. (Uwe Schindler)
-
-* LUCENE-3339: Fixed deadlock case when multiple threads use the new
- block-add (IndexWriter.add/updateDocuments) methods. (Robert Muir,
- Mike McCandless)
-
-* LUCENE-3340: Fixed case where IndexWriter was not flushing at
- exactly maxBufferedDeleteTerms (Mike McCandless)
-
-* LUCENE-3358, LUCENE-3361: StandardTokenizer and UAX29URLEmailTokenizer
- wrongly discarded combining marks attached to Han or Hiragana characters,
- this is fixed if you supply Version >= 3.4 If you supply a previous
- lucene version, you get the old buggy behavior for backwards compatibility.
- (Trejkaz, Robert Muir)
-
-* LUCENE-3368: IndexWriter commits segments without applying their buffered
- deletes when flushing concurrently. (Simon Willnauer, Mike McCandless)
-
-* LUCENE-3365: Create or Append mode determined before obtaining write lock
- can cause IndexWriter overriding an existing index.
- (Geoff Cooney via Simon Willnauer)
-
-* LUCENE-3380: Fixed a bug where FileSwitchDirectory's listAll() would wrongly
- throw NoSuchDirectoryException when all files written so far have been
- written to one directory, but the other still has not yet been created on the
- filesystem. (Robert Muir)
-
-* LUCENE-3402: term vectors disappeared from the index if optimize() was called
- following addIndexes(). (Shai Erera)
-
-* LUCENE-3409: IndexWriter.deleteAll was failing to close pooled NRT
- SegmentReaders, leading to unused files accumulating in the
- Directory. (tal steier via Mike McCandless)
-
-* LUCENE-3390: Added SortField.setMissingValue(v) to enable well defined
- sorting behavior for documents that do not include the given field.
- (Gilad Barkai via Doron Cohen)
-
-* LUCENE-3418: Lucene was failing to fsync index files on commit,
- meaning an operating system or hardware crash, or power loss, could
- easily corrupt the index. (Mark Miller, Robert Muir, Mike
- McCandless)
-
-New Features
-
-* LUCENE-3290: Added FieldInvertState.numUniqueTerms
- (Mike McCandless, Robert Muir)
-
-* LUCENE-3280: Add FixedBitSet, like OpenBitSet but is not elastic
- (grow on demand if you set/get/clear too-large indices). (Mike
- McCandless)
-
-* LUCENE-2048: Added the ability to omit positions but still index
- term frequencies, you can now control what is indexed into
- the postings via AbstractField.setIndexOptions:
- DOCS_ONLY: only documents are indexed: term frequencies and positions are omitted
- DOCS_AND_FREQS: only documents and term frequencies are indexed: positions are omitted
- DOCS_AND_FREQS_AND_POSITIONS: full postings: documents, frequencies, and positions
- AbstractField.setOmitTermFrequenciesAndPositions is deprecated,
- you should use DOCS_ONLY instead. (Robert Muir)
-
-* LUCENE-3097: Added a new grouping collector that can be used to retrieve all most relevant
- documents per group. This can be useful in situations when one wants to compute grouping
- based facets / statistics on the complete query result. (Martijn van Groningen)
-
-Optimizations
-
-* LUCENE-3289: When building an FST you can now tune how aggressively
- the FST should try to share common suffixes. Typically you can
- greatly reduce RAM required during building, and CPU consumed, at
- the cost of a somewhat larger FST. (Mike McCandless)
-
-Test Cases
-
-* LUCENE-3327: Fix AIOOBE when TestFSTs is run with
- -Dtests.verbose=true (James Dyer via Mike McCandless)
-
-Build
-
-* LUCENE-3406: Add ant target 'package-local-src-tgz' to Lucene and Solr
- to package sources from the local working copy.
- (Seung-Yeoul Yang via Steve Rowe)
-
-
-======================= Lucene 3.3.0 =======================
-
-Changes in backwards compatibility policy
-
-* LUCENE-3140: IndexOutput.copyBytes now takes a DataInput (superclass
- of IndexInput) as its first argument. (Robert Muir, Dawid Weiss,
- Mike McCandless)
-
-* LUCENE-3191: FieldComparator.value now returns an Object not
- Comparable; FieldDoc.fields also changed from Comparable[] to
- Object[] (Uwe Schindler, Mike McCandless)
-
-* LUCENE-3208: Made deprecated methods Query.weight(Searcher) and
- Searcher.createWeight() final to prevent override. If you have
- overridden one of these methods, cut over to the non-deprecated
- implementation. (Uwe Schindler, Robert Muir, Yonik Seeley)
-
-* LUCENE-3238: Made MultiTermQuery.rewrite() final, to prevent
- problems (such as not properly setting rewrite methods, or
- not working correctly with things like SpanMultiTermQueryWrapper).
- To rewrite to a simpler form, instead return a simpler enum
- from getEnum(IndexReader). For example, to rewrite to a single term,
- return a SingleTermEnum. (ludovic Boutros, Uwe Schindler, Robert Muir)
-
-Changes in runtime behavior
-
-* LUCENE-2834: the hash used to compute the lock file name when the
- lock file is not stored in the index has changed. This means you
- will see a different lucene-XXX-write.lock in your lock directory.
- (Robert Muir, Uwe Schindler, Mike McCandless)
-
-* LUCENE-3146: IndexReader.setNorm throws IllegalStateException if the field
- does not store norms. (Shai Erera, Mike McCandless)
-
-* LUCENE-3198: On Linux, if the JRE is 64 bit and supports unmapping,
- FSDirectory.open now defaults to MMapDirectory instead of
- NIOFSDirectory since MMapDirectory gives better performance. (Mike
- McCandless)
-
-* LUCENE-3200: MMapDirectory now uses chunk sizes that are powers of 2.
- When setting the chunk size, it is rounded down to the next possible
- value. The new default value for 64 bit platforms is 2^30 (1 GiB),
- for 32 bit platforms it stays unchanged at 2^28 (256 MiB).
- Internally, MMapDirectory now only uses one dedicated final IndexInput
- implementation supporting multiple chunks, which makes Hotspot's life
- easier. (Uwe Schindler, Robert Muir, Mike McCandless)
-
-Bug fixes
-
-* LUCENE-3147,LUCENE-3152: Fixed open file handles leaks in many places in the
- code. Now MockDirectoryWrapper (in test-framework) tracks all open files,
- including locks, and fails if the test fails to release all of them.
- (Mike McCandless, Robert Muir, Shai Erera, Simon Willnauer)
-
-* LUCENE-3102: CachingCollector.replay was failing to call setScorer
- per-segment (Martijn van Groningen via Mike McCandless)
-
-* LUCENE-3183: Fix rare corner case where seeking to empty term
- (field="", term="") with terms index interval 1 could hit
- ArrayIndexOutOfBoundsException (selckin, Robert Muir, Mike
- McCandless)
-
-* LUCENE-3208: IndexSearcher had its own private similarity field
- and corresponding get/setter overriding Searcher's implementation. If you
- setted a different Similarity instance on IndexSearcher, methods implemented
- in the superclass Searcher were not using it, leading to strange bugs.
- (Uwe Schindler, Robert Muir)
-
-* LUCENE-3197: Fix core merge policies to not over-merge during
- background optimize when documents are still being deleted
- concurrently with the optimize (Mike McCandless)
-
-* LUCENE-3222: The RAM accounting for buffered delete terms was
- failing to measure the space required to hold the term's field and
- text character data. (Mike McCandless)
-
-* LUCENE-3238: Fixed bug where using WildcardQuery("prefix*") inside
- of a SpanMultiTermQueryWrapper rewrote incorrectly and returned
- an error instead. (ludovic Boutros, Uwe Schindler, Robert Muir)
-
-API Changes
-
-* LUCENE-3208: Renamed protected IndexSearcher.createWeight() to expert
- public method IndexSearcher.createNormalizedWeight() as this better describes
- what this method does. The old method is still there for backwards
- compatibility. Query.weight() was deprecated and simply delegates to
- IndexSearcher. Both deprecated methods will be removed in Lucene 4.0.
- (Uwe Schindler, Robert Muir, Yonik Seeley)
-
-* LUCENE-3197: MergePolicy.findMergesForOptimize now takes
- Map<SegmentInfo,Boolean> instead of Set<SegmentInfo> as the second
- argument, so the merge policy knows which segments were originally
- present vs produced by an optimizing merge (Mike McCandless)
-
-Optimizations
-
-* LUCENE-1736: DateTools.java general improvements.
- (David Smiley via Steve Rowe)
-
-New Features
-
-* LUCENE-3140: Added experimental FST implementation to Lucene.
- (Robert Muir, Dawid Weiss, Mike McCandless)
-
-* LUCENE-3193: A new TwoPhaseCommitTool allows running a 2-phase commit
- algorithm over objects that implement the new TwoPhaseCommit interface (such
- as IndexWriter). (Shai Erera)
-
-* LUCENE-3191: Added TopDocs.merge, to facilitate merging results from
- different shards (Uwe Schindler, Mike McCandless)
-
-* LUCENE-3179: Added OpenBitSet.prevSetBit (Paul Elschot via Mike McCandless)
-
-* LUCENE-3210: Made TieredMergePolicy more aggressive in reclaiming
- segments with deletions; added new methods
- set/getReclaimDeletesWeight to control this. (Mike McCandless)
-
-Build
-
-* LUCENE-1344: Create OSGi bundle using dev-tools/maven.
- (Nicolas Lalevée, Luca Stancapiano via ryan)
-
-* LUCENE-3204: The maven-ant-tasks jar is now included in the source tree;
- users of the generate-maven-artifacts target no longer have to manually
- place this jar in the Ant classpath. NOTE: when Ant looks for the
- maven-ant-tasks jar, it looks first in its pre-existing classpath, so
- any copies it finds will be used instead of the copy included in the
- Lucene/Solr source tree. For this reason, it is recommeded to remove
- any copies of the maven-ant-tasks jar in the Ant classpath, e.g. under
- ~/.ant/lib/ or under the Ant installation's lib/ directory. (Steve Rowe)
-
-
-======================= Lucene 3.2.0 =======================
-
-Changes in backwards compatibility policy
-
-* LUCENE-2953: PriorityQueue's internal heap was made private, as subclassing
- with generics can lead to ClassCastException. For advanced use (e.g. in Solr)
- a method getHeapArray() was added to retrieve the internal heap array as a
- non-generic Object[]. (Uwe Schindler, Yonik Seeley)
-
-* LUCENE-1076: IndexWriter.setInfoStream now throws IOException
- (Mike McCandless, Shai Erera)
-
-* LUCENE-3084: MergePolicy.OneMerge.segments was changed from
- SegmentInfos to a List<SegmentInfo>. SegmentInfos itsself was changed
- to no longer extend Vector<SegmentInfo> (to update code that is using
- Vector-API, use the new asList() and asSet() methods returning unmodifiable
- collections; modifying SegmentInfos is now only possible through
- the explicitely declared methods). IndexWriter.segString() now takes
- Iterable<SegmentInfo> instead of List<SegmentInfo>. A simple recompile
- should fix this. MergePolicy and SegmentInfos are internal/experimental
- APIs not covered by the strict backwards compatibility policy.
- (Uwe Schindler, Mike McCandless)
-
-Changes in runtime behavior
-
-* LUCENE-3065: When a NumericField is retrieved from a Document loaded
- from IndexReader (or IndexSearcher), it will now come back as
- NumericField not as a Field with a string-ified version of the
- numeric value you had indexed. Note that this only applies for
- newly-indexed Documents; older indices will still return Field
- with the string-ified numeric value. If you call Document.get(),
- the value comes still back as String, but Document.getFieldable()
- returns NumericField instances. (Uwe Schindler, Ryan McKinley,
- Mike McCandless)
-
-* LUCENE-1076: Changed the default merge policy from
- LogByteSizeMergePolicy to TieredMergePolicy, as of Version.LUCENE_32
- (passed to IndexWriterConfig), which is able to merge non-contiguous
- segments. This means docIDs no longer necessarily stay "in order"
- during indexing. If this is a problem then you can use either of
- the LogMergePolicy impls. (Mike McCandless)
-
-New features
-
-* LUCENE-3082: Added index upgrade tool oal.index.IndexUpgrader
- that allows to upgrade all segments to last recent supported index
- format without fully optimizing. (Uwe Schindler, Mike McCandless)
-
-* LUCENE-1076: Added TieredMergePolicy which is able to merge non-contiguous
- segments, which means docIDs no longer necessarily stay "in order".
- (Mike McCandless, Shai Erera)
-
-* LUCENE-3071: Adding ReversePathHierarchyTokenizer, added skip parameter to
- PathHierarchyTokenizer (Olivier Favre via ryan)
-
-* LUCENE-1421, LUCENE-3102: added CachingCollector which allow you to cache
- document IDs and scores encountered during the search, and "replay" them to
- another Collector. (Mike McCandless, Shai Erera)
-
-* LUCENE-3112: Added experimental IndexWriter.add/updateDocuments,
- enabling a block of documents to be indexed, atomically, with
- guaranteed sequential docIDs. (Mike McCandless)
-
-API Changes
-
-* LUCENE-3061: IndexWriter's getNextMerge() and merge(OneMerge) are now public
- (though @lucene.experimental), allowing for custom MergeScheduler
- implementations. (Shai Erera)
-
-* LUCENE-3065: Document.getField() was deprecated, as it throws
- ClassCastException when loading lazy fields or NumericFields.
- (Uwe Schindler, Ryan McKinley, Mike McCandless)
-
-* LUCENE-2027: Directory.touchFile is deprecated and will be removed
- in 4.0. (Mike McCandless)
-
-Optimizations
-
-* LUCENE-2990: ArrayUtil/CollectionUtil.*Sort() methods now exit early
- on empty or one-element lists/arrays. (Uwe Schindler)
-
-* LUCENE-2897: Apply deleted terms while flushing a segment. We still
- buffer deleted terms to later apply to past segments. (Mike McCandless)
-
-* LUCENE-3126: IndexWriter.addIndexes copies incoming segments into CFS if they
- aren't already and MergePolicy allows that. (Shai Erera)
-
-Bug fixes
-
-* LUCENE-2996: addIndexes(IndexReader) did not flush before adding the new
- indexes, causing existing deletions to be applied on the incoming indexes as
- well. (Shai Erera, Mike McCandless)
-
-* LUCENE-3024: Index with more than 2.1B terms was hitting AIOOBE when
- seeking TermEnum (eg used by Solr's faceting) (Tom Burton-West, Mike
- McCandless)
-
-* LUCENE-3042: When a filter or consumer added Attributes to a TokenStream
- chain after it was already (partly) consumed [or clearAttributes(),
- captureState(), cloneAttributes(),... was called by the Tokenizer],
- the Tokenizer calling clearAttributes() or capturing state after addition
- may not do this on the newly added Attribute. This bug affected only
- very special use cases of the TokenStream-API, most users would not
- have recognized it. (Uwe Schindler, Robert Muir)
-
-* LUCENE-3054: PhraseQuery can in some cases stack overflow in
- SorterTemplate.quickSort(). This fix also adds an optimization to
- PhraseQuery as term with lower doc freq will also have less positions.
- (Uwe Schindler, Robert Muir, Otis Gospodnetic)
-
-* LUCENE-3068: sloppy phrase query failed to match valid documents when multiple
- query terms had same position in the query. (Doron Cohen)
-
-* LUCENE-3012: Lucene writes the header now for separate norm files (*.sNNN)
- (Robert Muir)
-
-Build
-
-* LUCENE-3006: Building javadocs will fail on warnings by default.
- Override with -Dfailonjavadocwarning=false (sarowe, gsingers)
-
-* LUCENE-3128: "ant eclipse" creates a .project file for easier Eclipse
- integration (unless one already exists). (Daniel Serodio via Shai Erera)
-
-Test Cases
-
-* LUCENE-3002: added 'tests.iter.min' to control 'tests.iter' by allowing to
- stop iterating if at least 'tests.iter.min' ran and a failure occured.
- (Shai Erera, Chris Hostetter)
-
-======================= Lucene 3.1.0 =======================
-
-Changes in backwards compatibility policy
-
-* LUCENE-2719: Changed API of internal utility class
- org.apache.lucene.util.SorterTemplate to support faster quickSort using
- pivot values and also merge sort and insertion sort. If you have used
- this class, you have to implement two more methods for handling pivots.
- (Uwe Schindler, Robert Muir, Mike McCandless)
-
-* LUCENE-1923: Renamed SegmentInfo & SegmentInfos segString method to
- toString. These are advanced APIs and subject to change suddenly.
- (Tim Smith via Mike McCandless)
-
-* LUCENE-2190: Removed deprecated customScore() and customExplain()
- methods from experimental CustomScoreQuery. (Uwe Schindler)
-
-* LUCENE-2286: Enabled DefaultSimilarity.setDiscountOverlaps by default.
- This means that terms with a position increment gap of zero do not
- affect the norms calculation by default. (Robert Muir)
-
-* LUCENE-2320: MergePolicy.writer is now of type SetOnce, which allows setting
- the IndexWriter for a MergePolicy exactly once. You can change references to
- 'writer' from <code>writer.doXYZ()</code> to <code>writer.get().doXYZ()</code>
- (it is also advisable to add an <code>assert writer != null;</code> before you
- access the wrapped IndexWriter.)
-
- In addition, MergePolicy only exposes a default constructor, and the one that
- took IndexWriter as argument has been removed from all MergePolicy extensions.
- (Shai Erera via Mike McCandless)
-
-* LUCENE-2328: SimpleFSDirectory.SimpleFSIndexInput is moved to
- FSDirectory.FSIndexInput. Anyone extending this class will have to
- fix their code on upgrading. (Earwin Burrfoot via Mike McCandless)
-
-* LUCENE-2302: The new interface for term attributes, CharTermAttribute,
- now implements CharSequence. This requires the toString() methods of
- CharTermAttribute, deprecated TermAttribute, and Token to return only
- the term text and no other attribute contents. LUCENE-2374 implements
- an attribute reflection API to no longer rely on toString() for attribute
- inspection. (Uwe Schindler, Robert Muir)
-
-* LUCENE-2372, LUCENE-2389: StandardAnalyzer, KeywordAnalyzer,
- PerFieldAnalyzerWrapper, WhitespaceTokenizer are now final. Also removed
- the now obsolete and deprecated Analyzer.setOverridesTokenStreamMethod().
- Analyzer and TokenStream base classes now have an assertion in their ctor,
- that check subclasses to be final or at least have final implementations
- of incrementToken(), tokenStream(), and reusableTokenStream().
- (Uwe Schindler, Robert Muir)
-
-* LUCENE-2316: Directory.fileLength contract was clarified - it returns the
- actual file's length if the file exists, and throws FileNotFoundException
- otherwise. Returning length=0 for a non-existent file is no longer allowed. If
- you relied on that, make sure to catch the exception. (Shai Erera)
-
-* LUCENE-2386: IndexWriter no longer performs an empty commit upon new index
- creation. Previously, if you passed an empty Directory and set OpenMode to
- CREATE*, IndexWriter would make a first empty commit. If you need that
- behavior you can call writer.commit()/close() immediately after you create it.
- (Shai Erera, Mike McCandless)
-
-* LUCENE-2733: Removed public constructors of utility classes with only static
- methods to prevent instantiation. (Uwe Schindler)
-
-* LUCENE-2602: The default (LogByteSizeMergePolicy) merge policy now
- takes deletions into account by default. You can disable this by
- calling setCalibrateSizeByDeletes(false) on the merge policy. (Mike
- McCandless)
-
-* LUCENE-2529, LUCENE-2668: Position increment gap and offset gap of empty
- values in multi-valued field has been changed for some cases in index.
- If you index empty fields and uses positions/offsets information on that
- fields, reindex is recommended. (David Smiley, Koji Sekiguchi)
-
-* LUCENE-2804: Directory.setLockFactory new declares throwing an IOException.
- (Shai Erera, Robert Muir)
-
-* LUCENE-2837: Added deprecations noting that in 4.0, Searcher and
- Searchable are collapsed into IndexSearcher; contrib/remote and
- MultiSearcher have been removed. (Mike McCandless)
-
-* LUCENE-2854: Deprecated SimilarityDelegator and
- Similarity.lengthNorm; the latter is now final, forcing any custom
- Similarity impls to cutover to the more general computeNorm (Robert
- Muir, Mike McCandless)
-
-* LUCENE-2869: Deprecated Query.getSimilarity: instead of using
- "runtime" subclassing/delegation, subclass the Weight instead.
- (Robert Muir)
-
-* LUCENE-2674: A new idfExplain method was added to Similarity, that
- accepts an incoming docFreq. If you subclass Similarity, make sure
- you also override this method on upgrade. (Robert Muir, Mike
- McCandless)
-
-Changes in runtime behavior
-
-* LUCENE-1923: Made IndexReader.toString() produce something
- meaningful (Tim Smith via Mike McCandless)
-
-* LUCENE-2179: CharArraySet.clear() is now functional.
- (Robert Muir, Uwe Schindler)
-
-* LUCENE-2455: IndexWriter.addIndexes no longer optimizes the target index
- before it adds the new ones. Also, the existing segments are not merged and so
- the index will not end up with a single segment (unless it was empty before).
- In addition, addIndexesNoOptimize was renamed to addIndexes and no longer
- invokes a merge on the incoming and target segments, but instead copies the
- segments to the target index. You can call maybeMerge or optimize after this
- method completes, if you need to.
-
- In addition, Directory.copyTo* were removed in favor of copy which takes the
- target Directory, source and target files as arguments, and copies the source
- file to the target Directory under the target file name. (Shai Erera)
-
-* LUCENE-2663: IndexWriter no longer forcefully clears any existing
- locks when create=true. This was a holdover from when
- SimpleFSLockFactory was the default locking implementation, and,
- even then it was dangerous since it could mask bugs in IndexWriter's
- usage, allowing applications to accidentally open two writers on the
- same directory. (Mike McCandless)
-
-* LUCENE-2701: maxMergeMBForOptimize and maxMergeDocs constraints set on
- LogMergePolicy now affect optimize() as well (as opposed to only regular
- merges). This means that you can run optimize() and too large segments won't
- be merged. (Shai Erera)
-
-* LUCENE-2753: IndexReader and DirectoryReader .listCommits() now return a List,
- guaranteeing the commits are sorted from oldest to latest. (Shai Erera)
-
-* LUCENE-2785: TopScoreDocCollector, TopFieldCollector and
- the IndexSearcher search methods that take an int nDocs will now
- throw IllegalArgumentException if nDocs is 0. Instead, you should
- use the newly added TotalHitCountCollector. (Mike McCandless)
-
-* LUCENE-2790: LogMergePolicy.useCompoundFile's logic now factors in noCFSRatio
- to determine whether the passed in segment should be compound.
- (Shai Erera, Earwin Burrfoot)
-
-* LUCENE-2805: IndexWriter now increments the index version on every change to
- the index instead of for every commit. Committing or closing the IndexWriter
- without any changes to the index will not cause any index version increment.
- (Simon Willnauer, Mike McCandless)
-
-* LUCENE-2650, LUCENE-2825: The behavior of FSDirectory.open has changed. On 64-bit
- Windows and Solaris systems that support unmapping, FSDirectory.open returns
- MMapDirectory. Additionally the behavior of MMapDirectory has been
- changed to enable unmapping by default if supported by the JRE.
- (Mike McCandless, Uwe Schindler, Robert Muir)
-
-* LUCENE-2829: Improve the performance of "primary key" lookup use
- case (running a TermQuery that matches one document) on a
- multi-segment index. (Robert Muir, Mike McCandless)
-
-* LUCENE-2010: Segments with 100% deleted documents are now removed on
- IndexReader or IndexWriter commit. (Uwe Schindler, Mike McCandless)
-
-* LUCENE-2960: Allow some changes to IndexWriterConfig to take effect
- "live" (after an IW is instantiated), via
- IndexWriter.getConfig().setXXX(...) (Shay Banon, Mike McCandless)
-
-API Changes
-
-* LUCENE-2076: Rename FSDirectory.getFile -> getDirectory. (George
- Aroush via Mike McCandless)
-
-* LUCENE-1260: Change norm encode (float->byte) and decode
- (byte->float) to be instance methods not static methods. This way a
- custom Similarity can alter how norms are encoded, though they must
- still be encoded as a single byte (Johan Kindgren via Mike
- McCandless)
-
-* LUCENE-2103: NoLockFactory should have a private constructor;
- until Lucene 4.0 the default one will be deprecated.
- (Shai Erera via Uwe Schindler)
-
-* LUCENE-2177: Deprecate the Field ctors that take byte[] and Store.
- Since the removal of compressed fields, Store can only be YES, so
- it's not necessary to specify. (Erik Hatcher via Mike McCandless)
-
-* LUCENE-2200: Several final classes had non-overriding protected
- members. These were converted to private and unused protected
- constructors removed. (Steven Rowe via Robert Muir)
-
-* LUCENE-2240: SimpleAnalyzer and WhitespaceAnalyzer now have
- Version ctors. (Simon Willnauer via Uwe Schindler)
-
-* LUCENE-2259: Add IndexWriter.deleteUnusedFiles, to attempt removing
- unused files. This is only useful on Windows, which prevents
- deletion of open files. IndexWriter will eventually remove these
- files itself; this method just lets you do so when you know the
- files are no longer open by IndexReaders. (luocanrao via Mike
- McCandless)
-
-* LUCENE-2282: IndexFileNames is exposed as a public class allowing for easier
- use by external code. In addition it offers a matchExtension method which
- callers can use to query whether a certain file matches a certain extension.
- (Shai Erera via Mike McCandless)
-
-* LUCENE-124: Add a TopTermsBoostOnlyBooleanQueryRewrite to MultiTermQuery.
- This rewrite method is similar to TopTermsScoringBooleanQueryRewrite, but
- only scores terms by their boost values. For example, this can be used
- with FuzzyQuery to ensure that exact matches are always scored higher,
- because only the boost will be used in scoring. (Robert Muir)
-
-* LUCENE-2015: Add a static method foldToASCII to ASCIIFoldingFilter to
- expose its folding logic. (Cédrik Lime via Robert Muir)
-
-* LUCENE-2294: IndexWriter constructors have been deprecated in favor of a
- single ctor which accepts IndexWriterConfig and a Directory. You can set all
- the parameters related to IndexWriter on IndexWriterConfig. The different
- setter/getter methods were deprecated as well. One should call
- writer.getConfig().getXYZ() to query for a parameter XYZ.
- Additionally, the setter/getter related to MergePolicy were deprecated as
- well. One should interact with the MergePolicy directly.
- (Shai Erera via Mike McCandless)
-
-* LUCENE-2320: IndexWriter's MergePolicy configuration was moved to
- IndexWriterConfig and the respective methods on IndexWriter were deprecated.
- (Shai Erera via Mike McCandless)
-
-* LUCENE-2328: Directory now keeps track itself of the files that are written
- but not yet fsynced. The old Directory.sync(String file) method is deprecated
- and replaced with Directory.sync(Collection<String> files). Take a look at
- FSDirectory to see a sample of how such tracking might look like, if needed
- in your custom Directories. (Earwin Burrfoot via Mike McCandless)
-
-* LUCENE-2302: Deprecated TermAttribute and replaced by a new
- CharTermAttribute. The change is backwards compatible, so
- mixed new/old TokenStreams all work on the same char[] buffer
- independent of which interface they use. CharTermAttribute
- has shorter method names and implements CharSequence and
- Appendable. This allows usage like Java's StringBuilder in
- addition to direct char[] access. Also terms can directly be
- used in places where CharSequence is allowed (e.g. regular
- expressions).
- (Uwe Schindler, Robert Muir)
-
-* LUCENE-2402: IndexWriter.deleteUnusedFiles now deletes unreferenced commit
- points too. If you use an IndexDeletionPolicy which holds onto index commits
- (such as SnapshotDeletionPolicy), you can call this method to remove those
- commit points when they are not needed anymore (instead of waiting for the
- next commit). (Shai Erera)
-
-* LUCENE-2481: SnapshotDeletionPolicy.snapshot() and release() were replaced
- with equivalent ones that take a String (id) as argument. You can pass
- whatever ID you want, as long as you use the same one when calling both.
- (Shai Erera)
-
-* LUCENE-2356: Add IndexWriterConfig.set/getReaderTermIndexDivisor, to
- set what IndexWriter passes for termsIndexDivisor to the readers it
- opens internally when apply deletions or creating a near-real-time
- reader. (Earwin Burrfoot via Mike McCandless)
-
-* LUCENE-2167,LUCENE-2699,LUCENE-2763,LUCENE-2847: StandardTokenizer/Analyzer
- in common/standard/ now implement the Word Break rules from the Unicode 6.0.0
- Text Segmentation algorithm (UAX#29), covering the full range of Unicode code
- points, including values from U+FFFF to U+10FFFF
-
- ClassicTokenizer/Analyzer retains the old (pre-Lucene 3.1) StandardTokenizer/
- Analyzer implementation and behavior. Only the Unicode Basic Multilingual
- Plane (code points from U+0000 to U+FFFF) is covered.
-
- UAX29URLEmailTokenizer tokenizes URLs and E-mail addresses according to the
- relevant RFCs, in addition to implementing the UAX#29 Word Break rules.
- (Steven Rowe, Robert Muir, Uwe Schindler)
-
-* LUCENE-2778: RAMDirectory now exposes newRAMFile() which allows to override
- and return a different RAMFile implementation. (Shai Erera)
-
-* LUCENE-2785: Added TotalHitCountCollector whose sole purpose is to
- count the number of hits matching the query. (Mike McCandless)
-
-* LUCENE-2846: Deprecated IndexReader.setNorm(int, String, float). This method
- is only syntactic sugar for setNorm(int, String, byte), but using the global
- Similarity.getDefault().encodeNormValue(). Use the byte-based method instead
- to ensure that the norm is encoded with your Similarity.
- (Robert Muir, Mike McCandless)
-
-* LUCENE-2374: Added Attribute reflection API: It's now possible to inspect the
- contents of AttributeImpl and AttributeSource using a well-defined API.
- This is e.g. used by Solr's AnalysisRequestHandlers to display all attributes
- in a structured way.
- There are also some backwards incompatible changes in toString() output,
- as LUCENE-2302 introduced the CharSequence interface to CharTermAttribute
- leading to changed toString() return values. The new API allows to get a
- string representation in a well-defined way using a new method
- reflectAsString(). For backwards compatibility reasons, when toString()
- was implemented by implementation subclasses, the default implementation of
- AttributeImpl.reflectWith() uses toString()s output instead to report the
- Attribute's properties. Otherwise, reflectWith() uses Java's reflection
- (like toString() did before) to get the attribute properties.
- In addition, the mandatory equals() and hashCode() are no longer required
- for AttributeImpls, but can still be provided (if needed).
- (Uwe Schindler)
-
-* LUCENE-2691: Deprecate IndexWriter.getReader in favor of
- IndexReader.open(IndexWriter) (Grant Ingersoll, Mike McCandless)
-
-* LUCENE-2876: Deprecated Scorer.getSimilarity(). If your Scorer uses a Similarity,
- it should keep it itself. Fixed Scorers to pass their parent Weight, so that
- Scorer.visitSubScorers (LUCENE-2590) will work correctly.
- (Robert Muir, Doron Cohen)
-
-* LUCENE-2900: When opening a near-real-time (NRT) reader
- (IndexReader.re/open(IndexWriter)) you can now specify whether
- deletes should be applied. Applying deletes can be costly, and some
- expert use cases can handle seeing deleted documents returned. The
- deletes remain buffered so that the next time you open an NRT reader
- and pass true, all deletes will be a applied. (Mike McCandless)
-
-* LUCENE-1253: LengthFilter (and Solr's KeepWordTokenFilter) now
- require up front specification of enablePositionIncrement. Together with
- StopFilter they have a common base class (FilteringTokenFilter) that handles
- the position increments automatically. Implementors only need to override an
- accept() method that filters tokens. (Uwe Schindler, Robert Muir)
-
-Bug fixes
-
-* LUCENE-2249: ParallelMultiSearcher should shut down thread pool on
- close. (Martin Traverso via Uwe Schindler)
-
-* LUCENE-2273: FieldCacheImpl.getCacheEntries() used WeakHashMap
- incorrectly and lead to ConcurrentModificationException.
- (Uwe Schindler, Robert Muir)
-
-* LUCENE-2328: Index files fsync tracking moved from
- IndexWriter/IndexReader to Directory, and it no longer leaks memory.
- (Earwin Burrfoot via Mike McCandless)
-
-* LUCENE-2074: Reduce buffer size of lexer back to default on reset.
- (Ruben Laguna, Shai Erera via Uwe Schindler)
-
-* LUCENE-2496: Don't throw NPE if IndexWriter is opened with CREATE on
- a prior (corrupt) index missing its segments_N file. (Mike
- McCandless)
-
-* LUCENE-2458: QueryParser no longer automatically forms phrase queries,
- assuming whitespace tokenization. Previously all CJK queries, for example,
- would be turned into phrase queries. The old behavior is preserved with
- the matchVersion parameter for previous versions. Additionally, you can
- explicitly enable the old behavior with setAutoGeneratePhraseQueries(true)
- (Robert Muir)
-
-* LUCENE-2537: FSDirectory.copy() implementation was unsafe and could result in
- OOM if a large file was copied. (Shai Erera)
-
-* LUCENE-2580: MultiPhraseQuery throws AIOOBE if number of positions
- exceeds number of terms at one position (Jayendra Patil via Mike McCandless)
-
-* LUCENE-2617: Optional clauses of a BooleanQuery were not factored
- into coord if the scorer for that segment returned null. This
- can cause the same document to score to differently depending on
- what segment it resides in. (yonik)
-
-* LUCENE-2272: Fix explain in PayloadNearQuery and also fix scoring issue (Peter Keegan via Grant Ingersoll)
-
-* LUCENE-2732: Fix charset problems in XML loading in
- HyphenationCompoundWordTokenFilter. (Uwe Schindler)
-
-* LUCENE-2802: NRT DirectoryReader returned incorrect values from
- getVersion, isOptimized, getCommitUserData, getIndexCommit and isCurrent due
- to a mutable reference to the IndexWriters SegmentInfos.
- (Simon Willnauer, Earwin Burrfoot)
-
-* LUCENE-2852: Fixed corner case in RAMInputStream that would hit a
- false EOF after seeking to EOF then seeking back to same block you
- were just in and then calling readBytes (Robert Muir, Mike McCandless)
-
-* LUCENE-2860: Fixed SegmentInfo.sizeInBytes to factor includeDocStores when it
- decides whether to return the cached computed size or not. (Shai Erera)
-
-* LUCENE-2584: SegmentInfo.files() could hit ConcurrentModificationException if
- called by multiple threads. (Alexander Kanarsky via Shai Erera)
-
-* LUCENE-2809: Fixed IndexWriter.numDocs to take into account
- applied but not yet flushed deletes. (Mike McCandless)
-
-* LUCENE-2879: MultiPhraseQuery previously calculated its phrase IDF by summing
- internally, it now calls Similarity.idfExplain(Collection, IndexSearcher).
- (Robert Muir)
-
-* LUCENE-2693: RAM used by IndexWriter was slightly incorrectly computed.
- (Jason Rutherglen via Shai Erera)
-
-* LUCENE-1846: DateTools now uses the US locale everywhere, so DateTools.round()
- is safe also in strange locales. (Uwe Schindler)
-
-* LUCENE-2891: IndexWriterConfig did not accept -1 in setReaderTermIndexDivisor,
- which can be used to prevent loading the terms index into memory. (Shai Erera)
-
-* LUCENE-2937: Encoding a float into a byte (e.g. encoding field norms during
- indexing) had an underflow detection bug that caused floatToByte(f)==0 where
- f was greater than 0, but slightly less than byteToFloat(1). This meant that
- certain very small field norms (index_boost * length_norm) could have
- been rounded down to 0 instead of being rounded up to the smallest
- positive number. (yonik)
-
-* LUCENE-2936: PhraseQuery score explanations were not correctly
- identifying matches vs non-matches. (hossman)
-
-* LUCENE-2975: A hotspot bug corrupts IndexInput#readVInt()/readVLong() if
- the underlying readByte() is inlined (which happens e.g. in MMapDirectory).
- The loop was unwinded which makes the hotspot bug disappear.
- (Uwe Schindler, Robert Muir, Mike McCandless)
-
-New features
-
-* LUCENE-2128: Parallelized fetching document frequencies during weight
- creation. (Israel Tsadok, Simon Willnauer via Uwe Schindler)
-
-* LUCENE-2069: Added Unicode 4 support to CharArraySet. Due to the switch
- to Java 5, supplementary characters are now lowercased correctly if the
- set is created as case insensitive.
- CharArraySet now requires a Version argument to preserve
- backwards compatibility. If Version < 3.1 is passed to the constructor,
- CharArraySet yields the old behavior. (Simon Willnauer)
-
-* LUCENE-2069: Added Unicode 4 support to LowerCaseFilter. Due to the switch
- to Java 5, supplementary characters are now lowercased correctly.
- LowerCaseFilter now requires a Version argument to preserve
- backwards compatibility. If Version < 3.1 is passed to the constructor,
- LowerCaseFilter yields the old behavior. (Simon Willnauer, Robert Muir)
-
-* LUCENE-2034: Added ReusableAnalyzerBase, an abstract subclass of Analyzer
- that makes it easier to reuse TokenStreams correctly. This issue also added
- StopwordAnalyzerBase, which improves consistency of all Analyzers that use
- stopwords, and implement many analyzers in contrib with it.
- (Simon Willnauer via Robert Muir)
-
-* LUCENE-2198, LUCENE-2901: Support protected words in stemming TokenFilters using a
- new KeywordAttribute. (Simon Willnauer, Drew Farris via Uwe Schindler)
-
-* LUCENE-2183, LUCENE-2240, LUCENE-2241: Added Unicode 4 support
- to CharTokenizer and its subclasses. CharTokenizer now has new
- int-API which is conditionally preferred to the old char-API depending
- on the provided Version. Version < 3.1 will use the char-API.
- (Simon Willnauer via Uwe Schindler)
-
-* LUCENE-2247: Added a CharArrayMap<V> for performance improvements
- in some stemmers and synonym filters. (Uwe Schindler)
-
-* LUCENE-2320: Added SetOnce which wraps an object and allows it to be set
- exactly once. (Shai Erera via Mike McCandless)
-
-* LUCENE-2314: Added AttributeSource.copyTo(AttributeSource) that
- allows to use cloneAttributes() and this method as a replacement
- for captureState()/restoreState(), if the state itself
- needs to be inspected/modified. (Uwe Schindler)
-
-* LUCENE-2293: Expose control over max number of threads that
- IndexWriter will allow to run concurrently while indexing
- documents (previously this was hardwired to 5), using
- IndexWriterConfig.setMaxThreadStates. (Mike McCandless)
-
-* LUCENE-2297: Enable turning on reader pooling inside IndexWriter
- even when getReader (near-real-timer reader) is not in use, through
- IndexWriterConfig.enable/disableReaderPooling. (Mike McCandless)
-
-* LUCENE-2331: Add NoMergePolicy which never returns any merges to execute. In
- addition, add NoMergeScheduler which never executes any merges. These two are
- convenient classes in case you want to disable segment merges by IndexWriter
- without tweaking a particular MergePolicy parameters, such as mergeFactor.
- MergeScheduler's methods are now public. (Shai Erera via Mike McCandless)
-
-* LUCENE-2339: Deprecate static method Directory.copy in favor of
- Directory.copyTo, and use nio's FileChannel.transferTo when copying
- files between FSDirectory instances. (Earwin Burrfoot via Mike
- McCandless).
-
-* LUCENE-2074: Make StandardTokenizer fit for Unicode 4.0, if the
- matchVersion parameter is Version.LUCENE_31. (Uwe Schindler)
-
-* LUCENE-2385: Moved NoDeletionPolicy from benchmark to core. NoDeletionPolicy
- can be used to prevent commits from ever getting deleted from the index.
- (Shai Erera)
-
-* LUCENE-1585: IndexWriter now accepts a PayloadProcessorProvider which can
- return a DirPayloadProcessor for a given Directory, which returns a
- PayloadProcessor for a given Term. The PayloadProcessor will be used to
- process the payloads of the segments as they are merged (e.g. if one wants to
- rewrite payloads of external indexes as they are added, or of local ones).
- (Shai Erera, Michael Busch, Mike McCandless)
-
-* LUCENE-2440: Add support for custom ExecutorService in
- ParallelMultiSearcher (Edward Drapkin via Mike McCandless)
-
-* LUCENE-2295: Added a LimitTokenCountAnalyzer / LimitTokenCountFilter
- to wrap any other Analyzer and provide the same functionality as
- MaxFieldLength provided on IndexWriter. This patch also fixes a bug
- in the offset calculation in CharTokenizer. (Uwe Schindler, Shai Erera)
-
-* LUCENE-2526: Don't throw NPE from MultiPhraseQuery.toString when
- it's empty. (Ross Woolf via Mike McCandless)
-
-* LUCENE-2559: Added SegmentReader.reopen methods (John Wang via Mike
- McCandless)
-
-* LUCENE-2590: Added Scorer.visitSubScorers, and Scorer.freq. Along
- with a custom Collector these experimental methods make it possible
- to gather the hit-count per sub-clause and per document while a
- search is running. (Simon Willnauer, Mike McCandless)
-
-* LUCENE-2636: Added MultiCollector which allows running the search with several
- Collectors. (Shai Erera)
-
-* LUCENE-2754, LUCENE-2757: Added a wrapper around MultiTermQueries
- to add span support: SpanMultiTermQueryWrapper<Q extends MultiTermQuery>.
- Using this wrapper its easy to add fuzzy/wildcard to e.g. a SpanNearQuery.
- (Robert Muir, Uwe Schindler)
-
-* LUCENE-2838: ConstantScoreQuery now directly supports wrapping a Query
- instance for stripping off scores. The use of a QueryWrapperFilter
- is no longer needed and discouraged for that use case. Directly wrapping
- Query improves performance, as out-of-order collection is now supported.
- (Uwe Schindler)
-
-* LUCENE-2864: Add getMaxTermFrequency (maximum within-document TF) to
- FieldInvertState so that it can be used in Similarity.computeNorm.
- (Robert Muir)
-
-* LUCENE-2720: Segments now record the code version which created them.
- (Shai Erera, Mike McCandless, Uwe Schindler)
-
-* LUCENE-2474: Added expert ReaderFinishedListener API to
- IndexReader, to allow apps that maintain external per-segment caches
- to evict entries when a segment is finished. (Shay Banon, Yonik
- Seeley, Mike McCandless)
-
-* LUCENE-2911: The new StandardTokenizer, UAX29URLEmailTokenizer, and
- the ICUTokenizer in contrib now all tag types with a consistent set
- of token types (defined in StandardTokenizer). Tokens in the major
- CJK types are explicitly marked to allow for custom downstream handling:
- <IDEOGRAPHIC>, <HANGUL>, <KATAKANA>, and <HIRAGANA>.
- (Robert Muir, Steven Rowe)
-
-* LUCENE-2913: Add missing getters to Numeric* classes. (Uwe Schindler)
-
-* LUCENE-1810: Added FieldSelectorResult.LATENT to not cache lazy loaded fields
- (Tim Smith, Grant Ingersoll)
-
-* LUCENE-2692: Added several new SpanQuery classes for positional checking
- (match is in a range, payload is a specific value) (Grant Ingersoll)
-
-Optimizations
-
-* LUCENE-2494: Use CompletionService in ParallelMultiSearcher instead of
- simple polling for results. (Edward Drapkin, Simon Willnauer)
-
-* LUCENE-2075: Terms dict cache is now shared across threads instead
- of being stored separately in thread local storage. Also fixed
- terms dict so that the cache is used when seeking the thread local
- term enum, which will be important for MultiTermQuery impls that do
- lots of seeking (Mike McCandless, Uwe Schindler, Robert Muir, Yonik
- Seeley)
-
-* LUCENE-2136: If the multi reader (DirectoryReader or MultiReader)
- only has a single sub-reader, delegate all enum requests to it.
- This avoid the overhead of using a PQ unnecessarily. (Mike
- McCandless)
-
-* LUCENE-2137: Switch to AtomicInteger for some ref counting (Earwin
- Burrfoot via Mike McCandless)
-
-* LUCENE-2123, LUCENE-2261: Move FuzzyQuery rewrite to separate RewriteMode
- into MultiTermQuery. The number of fuzzy expansions can be specified with
- the maxExpansions parameter to FuzzyQuery.
- (Uwe Schindler, Robert Muir, Mike McCandless)
-
-* LUCENE-2164: ConcurrentMergeScheduler has more control over merge
- threads. First, it gives smaller merges higher thread priority than
- larges ones. Second, a new set/getMaxMergeCount setting will pause
- the larger merges to allow smaller ones to finish. The defaults for
- these settings are now dynamic, depending the number CPU cores as
- reported by Runtime.getRuntime().availableProcessors() (Mike
- McCandless)
-
-* LUCENE-2169: Improved CharArraySet.copy(), if source set is
- also a CharArraySet. (Simon Willnauer via Uwe Schindler)
-
-* LUCENE-2084: Change IndexableBinaryStringTools to work on byte[] and char[]
- directly, instead of Byte/CharBuffers, and modify CollationKeyFilter to
- take advantage of this for faster performance.
- (Steven Rowe, Uwe Schindler, Robert Muir)
-
-* LUCENE-2188: Add a utility class for tracking deprecated overridden
- methods in non-final subclasses.
- (Uwe Schindler, Robert Muir)
-
-* LUCENE-2195: Speedup CharArraySet if set is empty.
- (Simon Willnauer via Robert Muir)
-
-* LUCENE-2285: Code cleanup. (Shai Erera via Uwe Schindler)
-
-* LUCENE-2303: Remove code duplication in Token class by subclassing
- TermAttributeImpl, move DEFAULT_TYPE constant to TypeInterface, improve
- null-handling for TypeAttribute. (Uwe Schindler)
-
-* LUCENE-2329: Switch TermsHash* from using a PostingList object per unique
- term to parallel arrays, indexed by termID. This reduces garbage collection
- overhead significantly, which results in great indexing performance wins
- when the available JVM heap space is low. This will become even more
- important when the DocumentsWriter RAM buffer is searchable in the future,
- because then it will make sense to make the RAM buffers as large as
- possible. (Mike McCandless, Michael Busch)
-
-* LUCENE-2380: The terms field cache methods (getTerms,
- getTermsIndex), which replace the older String equivalents
- (getStrings, getStringIndex), consume quite a bit less RAM in most
- cases. (Mike McCandless)
-
-* LUCENE-2410: ~20% speedup on exact (slop=0) PhraseQuery matching.
- (Mike McCandless)
-
-* LUCENE-2531: Fix issue when sorting by a String field that was
- causing too many fallbacks to compare-by-value (instead of by-ord).
- (Mike McCandless)
-
-* LUCENE-2574: IndexInput exposes copyBytes(IndexOutput, long) to allow for
- efficient copying by sub-classes. Optimized copy is implemented for RAM and FS
- streams. (Shai Erera)
-
-* LUCENE-2719: Improved TermsHashPerField's sorting to use a better
- quick sort algorithm that dereferences the pivot element not on
- every compare call. Also replaced lots of sorting code in Lucene
- by the improved SorterTemplate class.
- (Uwe Schindler, Robert Muir, Mike McCandless)
-
-* LUCENE-2760: Optimize SpanFirstQuery and SpanPositionRangeQuery.
- (Robert Muir)
-
-* LUCENE-2770: Make SegmentMerger always work on atomic subreaders,
- even when IndexWriter.addIndexes(IndexReader...) is used with
- DirectoryReaders or other MultiReaders. This saves lots of memory
- during merge of norms. (Uwe Schindler, Mike McCandless)
-
-* LUCENE-2824: Optimize BufferedIndexInput to do less bounds checks.
- (Robert Muir)
-
-* LUCENE-2010: Segments with 100% deleted documents are now removed on
- IndexReader or IndexWriter commit. (Uwe Schindler, Mike McCandless)
-
-* LUCENE-1472: Removed synchronization from static DateTools methods
- by using a ThreadLocal. Also converted DateTools.Resolution to a
- Java 5 enum (this should not break backwards). (Uwe Schindler)
-
-Build
-
-* LUCENE-2124: Moved the JDK-based collation support from contrib/collation
- into core, and moved the ICU-based collation support into contrib/icu.
- (Robert Muir)
-
-* LUCENE-2326: Removed SVN checkouts for backwards tests. The backwards
- branch is now included in the svn repository using "svn copy"
- after release. (Uwe Schindler)
-
-* LUCENE-2074: Regenerating StandardTokenizerImpl files now needs
- JFlex 1.5 (currently only available on SVN). (Uwe Schindler)
-
-* LUCENE-1709: Tests are now parallelized by default (except for benchmark). You
- can force them to run sequentially by passing -Drunsequential=1 on the command
- line. The number of threads that are spawned per CPU defaults to '1'. If you
- wish to change that, you can run the tests with -DthreadsPerProcessor=[num].
- (Robert Muir, Shai Erera, Peter Kofler)
-
-* LUCENE-2516: Backwards tests are now compiled against released lucene-core.jar
- from tarball of previous version. Backwards tests are now packaged together
- with src distribution. (Uwe Schindler)
-
-* LUCENE-2611: Added Ant target to install IntelliJ IDEA configuration:
- "ant idea". See http://wiki.apache.org/lucene-java/HowtoConfigureIntelliJ
- (Steven Rowe)
-
-* LUCENE-2657: Switch from using Maven POM templates to full POMs when
- generating Maven artifacts (Steven Rowe)
-
-* LUCENE-2609: Added jar-test-framework Ant target which packages Lucene's
- tests' framework classes. (Drew Farris, Grant Ingersoll, Shai Erera,
- Steven Rowe)
-
-Test Cases
-
-* LUCENE-2037 Allow Junit4 tests in our environment (Erick Erickson
- via Mike McCandless)
-
-* LUCENE-1844: Speed up the unit tests (Mark Miller, Erick Erickson,
- Mike McCandless)
-
-* LUCENE-2065: Use Java 5 generics throughout our unit tests. (Kay
- Kay via Mike McCandless)
-
-* LUCENE-2155: Fix time and zone dependent localization test failures
- in queryparser tests. (Uwe Schindler, Chris Male, Robert Muir)
-
-* LUCENE-2170: Fix thread starvation problems. (Uwe Schindler)
-
-* LUCENE-2248, LUCENE-2251, LUCENE-2285: Refactor tests to not use
- Version.LUCENE_CURRENT, but instead use a global static value
- from LuceneTestCase(J4), that contains the release version.
- (Uwe Schindler, Simon Willnauer, Shai Erera)
-
-* LUCENE-2313, LUCENE-2322: Add VERBOSE to LuceneTestCase(J4) to control
- verbosity of tests. If VERBOSE==false (default) tests should not print
- anything other than errors to System.(out|err). The setting can be
- changed with -Dtests.verbose=true on test invocation.
- (Shai Erera, Paul Elschot, Uwe Schindler)
-
-* LUCENE-2318: Remove inconsistent system property code for retrieving
- temp and data directories inside test cases. It is now centralized in
- LuceneTestCase(J4). Also changed lots of tests to use
- getClass().getResourceAsStream() to retrieve test data. Tests needing
- access to "real" files from the test folder itself, can use
- LuceneTestCase(J4).getDataFile(). (Uwe Schindler)
-
-* LUCENE-2398, LUCENE-2611: Improve tests to work better from IDEs such
- as Eclipse and IntelliJ.
- (Paolo Castagna, Steven Rowe via Robert Muir)
-
-* LUCENE-2804: add newFSDirectory to LuceneTestCase to create a FSDirectory at
- random. (Shai Erera, Robert Muir)
-
-Documentation
-
-* LUCENE-2579: Fix oal.search's package.html description of abstract
- methods. (Santiago M. Mola via Mike McCandless)
-
-* LUCENE-2625: Add a note to IndexReader.termDocs() with additional verbiage
- that the TermEnum must be seeked since it is unpositioned.
- (Adriano Crestani via Robert Muir)
-
-* LUCENE-2894: Use google-code-prettify for syntax highlighting in javadoc.
- (Shinichiro Abe, Koji Sekiguchi)
-
-================== Release 2.9.4 / 3.0.3 ====================
-
-Changes in runtime behavior
-
-* LUCENE-2689: NativeFSLockFactory no longer attempts to acquire a
- test lock just before the real lock is acquired. (Surinder Pal
- Singh Bindra via Mike McCandless)
-
-* LUCENE-2762: Fixed bug in IndexWriter causing it to hold open file
- handles against deleted files when compound-file was enabled (the
- default) and readers are pooled. As a result of this the peak
- worst-case free disk space required during optimize is now 3X the
- index size, when compound file is enabled (else 2X). (Mike
- McCandless)
-
-* LUCENE-2773: LogMergePolicy accepts a double noCFSRatio (default =
- 0.1), which means any time a merged segment is greater than 10% of
- the index size, it will be left in non-compound format even if
- compound format is on. This change was made to reduce peak
- transient disk usage during optimize which increased due to
- LUCENE-2762. (Mike McCandless)
-
-Bug fixes
-
-* LUCENE-2142 (correct fix): FieldCacheImpl.getStringIndex no longer
- throws an exception when term count exceeds doc count.
- (Mike McCandless, Uwe Schindler)
-
-* LUCENE-2513: when opening writable IndexReader on a not-current
- commit, do not overwrite "future" commits. (Mike McCandless)
-
-* LUCENE-2536: IndexWriter.rollback was failing to properly rollback
- buffered deletions against segments that were flushed (Mark Harwood
- via Mike McCandless)
-
-* LUCENE-2541: Fixed NumericRangeQuery that returned incorrect results
- with endpoints near Long.MIN_VALUE and Long.MAX_VALUE:
- NumericUtils.splitRange() overflowed, if
- - the range contained a LOWER bound
- that was greater than (Long.MAX_VALUE - (1L << precisionStep))
- - the range contained an UPPER bound
- that was less than (Long.MIN_VALUE + (1L << precisionStep))
- With standard precision steps around 4, this had no effect on
- most queries, only those that met the above conditions.
- Queries with large precision steps failed more easy. Queries with
- precision step >=64 were not affected. Also 32 bit data types int
- and float were not affected.
- (Yonik Seeley, Uwe Schindler)
-
-* LUCENE-2593: Fixed certain rare cases where a disk full could lead
- to a corrupted index (Robert Muir, Mike McCandless)
-
-* LUCENE-2620: Fixed a bug in WildcardQuery where too many asterisks
- would result in unbearably slow performance. (Nick Barkas via Robert Muir)
-
-* LUCENE-2627: Fixed bug in MMapDirectory chunking when a file is an
- exact multiple of the chunk size. (Robert Muir)
-
-* LUCENE-2634: isCurrent on an NRT reader was failing to return false
- if the writer had just committed (Nikolay Zamosenchuk via Mike McCandless)
-
-* LUCENE-2650: Added extra safety to MMapIndexInput clones to prevent accessing
- an unmapped buffer if the input is closed (Mike McCandless, Uwe Schindler, Robert Muir)
-
-* LUCENE-2384: Reset zzBuffer in StandardTokenizerImpl when lexer is reset.
- (Ruben Laguna via Uwe Schindler, sub-issue of LUCENE-2074)
-
-* LUCENE-2658: Exceptions while processing term vectors enabled for multiple
- fields could lead to invalid ArrayIndexOutOfBoundsExceptions.
- (Robert Muir, Mike McCandless)
-
-* LUCENE-2235: Implement missing PerFieldAnalyzerWrapper.getOffsetGap().
- (Javier Godoy via Uwe Schindler)
-
-* LUCENE-2328: Fixed memory leak in how IndexWriter/Reader tracked
- already sync'd files. (Earwin Burrfoot via Mike McCandless)
-
-* LUCENE-2549: Fix TimeLimitingCollector#TimeExceededException to record
- the absolute docid. (Uwe Schindler)
-
-* LUCENE-2533: fix FileSwitchDirectory.listAll to not return dups when
- primary & secondary dirs share the same underlying directory.
- (Michael McCandless)
-
-* LUCENE-2365: IndexWriter.newestSegment (used normally for testing)
- is fixed to return null if there are no segments. (Karthick
- Sankarachary via Mike McCandless)
-
-* LUCENE-2730: Fix two rare deadlock cases in IndexWriter (Mike McCandless)
-
-* LUCENE-2744: CheckIndex was stating total number of fields,
- not the number that have norms enabled, on the "test: field
- norms..." output. (Mark Kristensson via Mike McCandless)
-
-* LUCENE-2759: Fixed two near-real-time cases where doc store files
- may be opened for read even though they are still open for write.
- (Mike McCandless)
-
-* LUCENE-2618: Fix rare thread safety issue whereby
- IndexWriter.optimize could sometimes return even though the index
- wasn't fully optimized (Mike McCandless)
-
-* LUCENE-2767: Fix thread safety issue in addIndexes(IndexReader[])
- that could potentially result in index corruption. (Mike
- McCandless)
-
-* LUCENE-2762: Fixed bug in IndexWriter causing it to hold open file
- handles against deleted files when compound-file was enabled (the
- default) and readers are pooled. As a result of this the peak
- worst-case free disk space required during optimize is now 3X the
- index size, when compound file is enabled (else 2X). (Mike
- McCandless)
-
-* LUCENE-2216: OpenBitSet.hashCode returned different hash codes for
- sets that only differed by trailing zeros. (Dawid Weiss, yonik)
-
-* LUCENE-2782: Fix rare potential thread hazard with
- IndexWriter.commit (Mike McCandless)
-
-API Changes
-
-* LUCENE-2773: LogMergePolicy accepts a double noCFSRatio (default =
- 0.1), which means any time a merged segment is greater than 10% of
- the index size, it will be left in non-compound format even if
- compound format is on. This change was made to reduce peak
- transient disk usage during optimize which increased due to
- LUCENE-2762. (Mike McCandless)
-
-Optimizations
-
-* LUCENE-2556: Improve memory usage after cloning TermAttribute.
- (Adriano Crestani via Uwe Schindler)
-
-* LUCENE-2098: Improve the performance of BaseCharFilter, especially for
- large documents. (Robin Wojciki, Koji Sekiguchi, Robert Muir)
-
-New features
-
-* LUCENE-2675 (2.9.4 only): Add support for Lucene 3.0 stored field files
- also in 2.9. The file format did not change, only the version number was
- upgraded to mark segments that have no compression. FieldsWriter still only
- writes 2.9 segments as they could contain compressed fields. This cross-version
- index format compatibility is provided here solely because Lucene 2.9 and 3.0
- have the same bugfix level, features, and the same index format with this slight
- compression difference. In general, Lucene does not support reading newer
- indexes with older library versions. (Uwe Schindler)
-
-Documentation
-
-* LUCENE-2239: Documented limitations in NIOFSDirectory and MMapDirectory due to
- Java NIO behavior when a Thread is interrupted while blocking on IO.
- (Simon Willnauer, Robert Muir)
-
-================== Release 2.9.3 / 3.0.2 ====================
-
-Changes in backwards compatibility policy
-
-* LUCENE-2135: Added FieldCache.purge(IndexReader) method to the
- interface. Anyone implementing FieldCache externally will need to
- fix their code to implement this, on upgrading. (Mike McCandless)
-
-Changes in runtime behavior
-
-* LUCENE-2421: NativeFSLockFactory does not throw LockReleaseFailedException if
- it cannot delete the lock file, since obtaining the lock does not fail if the
- file is there. (Shai Erera)
-
-* LUCENE-2060 (2.9.3 only): Changed ConcurrentMergeScheduler's default for
- maxNumThreads from 3 to 1, because in practice we get the most gains
- from running a single merge in the backround. More than one
- concurrent merge causes alot of thrashing (though it's possible on
- SSD storage that there would be net gains). (Jason Rutherglen, Mike
- McCandless)
-
-Bug fixes
-
-* LUCENE-2046 (2.9.3 only): IndexReader should not see the index as changed, after
- IndexWriter.prepareCommit has been called but before
- IndexWriter.commit is called. (Peter Keegan via Mike McCandless)
-
-* LUCENE-2119: Don't throw NegativeArraySizeException if you pass
- Integer.MAX_VALUE as nDocs to IndexSearcher search methods. (Paul
- Taylor via Mike McCandless)
-
-* LUCENE-2142: FieldCacheImpl.getStringIndex no longer throws an
- exception when term count exceeds doc count. (Mike McCandless)
-
-* LUCENE-2104: NativeFSLock.release() would silently fail if the lock is held by
- another thread/process. (Shai Erera via Uwe Schindler)
-
-* LUCENE-2283: Use shared memory pool for term vector and stored
- fields buffers. This memory will be reclaimed if needed according to
- the configured RAM Buffer Size for the IndexWriter. This also fixes
- potentially excessive memory usage when many threads are indexing a
- mix of small and large documents. (Tim Smith via Mike McCandless)
-
-* LUCENE-2300: If IndexWriter is pooling reader (because NRT reader
- has been obtained), and addIndexes* is run, do not pool the
- readers from the external directory. This is harmless (NRT reader is
- correct), but a waste of resources. (Mike McCandless)
-
-* LUCENE-2422: Don't reuse byte[] in IndexInput/Output -- it gains
- little performance, and ties up possibly large amounts of memory
- for apps that index large docs. (Ross Woolf via Mike McCandless)
-
-* LUCENE-2387: Don't hang onto Fieldables from the last doc indexed,
- in IndexWriter, nor the Reader in Tokenizer after close is
- called. (Ruben Laguna, Uwe Schindler, Mike McCandless)
-
-* LUCENE-2417: IndexCommit did not implement hashCode() and equals()
- consistently. Now they both take Directory and version into consideration. In
- addition, all of IndexComnmit methods which threw
- UnsupportedOperationException are now abstract. (Shai Erera)
-
-* LUCENE-2467: Fixed memory leaks in IndexWriter when large documents
- are indexed. (Mike McCandless)
-
-* LUCENE-2473: Clicking on the "More Results" link in the luceneweb.war
- demo resulted in ArrayIndexOutOfBoundsException.
- (Sami Siren via Robert Muir)
-
-* LUCENE-2476: If any exception is hit init'ing IW, release the write
- lock (previously we only released on IOException). (Tamas Cservenak
- via Mike McCandless)
-
-* LUCENE-2478: Fix CachingWrapperFilter to not throw NPE when
- Filter.getDocIdSet() returns null. (Uwe Schindler, Daniel Noll)
-
-* LUCENE-2468: Allow specifying how new deletions should be handled in
- CachingWrapperFilter and CachingSpanFilter. By default, new
- deletions are ignored in CachingWrapperFilter, since typically this
- filter is AND'd with a query that correctly takes new deletions into
- account. This should be a performance gain (higher cache hit rate)
- in apps that reopen readers, or use near-real-time reader
- (IndexWriter.getReader()), but may introduce invalid search results
- (allowing deleted docs to be returned) for certain cases, so a new
- expert ctor was added to CachingWrapperFilter to enforce deletions
- at a performance cost. CachingSpanFilter by default recaches if
- there are new deletions (Shay Banon via Mike McCandless)
-
-* LUCENE-2299: If you open an NRT reader while addIndexes* is running,
- it may miss some segments (Earwin Burrfoot via Mike McCandless)
-
-* LUCENE-2397: Don't throw NPE from SnapshotDeletionPolicy.snapshot if
- there are no commits yet (Shai Erera)
-
-* LUCENE-2424: Fix FieldDoc.toString to actually return its fields
- (Stephen Green via Mike McCandless)
-
-* LUCENE-2311: Always pass a "fully loaded" (terms index & doc stores)
- SegmentsReader to IndexWriter's mergedSegmentWarmer (if set), so
- that warming is free to do whatever it needs to. (Earwin Burrfoot
- via Mike McCandless)
-
-* LUCENE-3029: Fix corner case when MultiPhraseQuery is used with zero
- position-increment tokens that would sometimes assign different
- scores to identical docs. (Mike McCandless)
-
-* LUCENE-2486: Fixed intermittent FileNotFoundException on doc store
- files when a mergedSegmentWarmer is set on IndexWriter. (Mike
- McCandless)
-
-* LUCENE-2130: Fix performance issue when FuzzyQuery runs on a
- multi-segment index (Michael McCandless)
-
-API Changes
-
-* LUCENE-2281: added doBeforeFlush to IndexWriter to allow extensions to perform
- operations before flush starts. Also exposed doAfterFlush as protected instead
- of package-private. (Shai Erera via Mike McCandless)
-
-* LUCENE-2356: Add IndexWriter.set/getReaderTermsIndexDivisor, to set
- what IndexWriter passes for termsIndexDivisor to the readers it
- opens internally when applying deletions or creating a
- near-real-time reader. (Earwin Burrfoot via Mike McCandless)
-
-Optimizations
-
-* LUCENE-2494 (3.0.2 only): Use CompletionService in ParallelMultiSearcher
- instead of simple polling for results. (Edward Drapkin, Simon Willnauer)
-
-* LUCENE-2135: On IndexReader.close, forcefully evict any entries from
- the FieldCache rather than waiting for the WeakHashMap to release
- the reference (Mike McCandless)
-
-* LUCENE-2161: Improve concurrency of IndexReader, especially in the
- context of near real-time readers. (Mike McCandless)
-
-* LUCENE-2360: Small speedup to recycling of reused per-doc RAM in
- IndexWriter (Robert Muir, Mike McCandless)
-
-Build
-
-* LUCENE-2488 (2.9.3 only): Support build with JDK 1.4 and exclude Java 1.5
- contrib modules on request (pass '-Dforce.jdk14.build=true') when
- compiling/testing/packaging. This marks the benchmark contrib also
- as Java 1.5, as it depends on fast-vector-highlighter. (Uwe Schindler)
-
-================== Release 2.9.2 / 3.0.1 ====================
-
-Changes in backwards compatibility policy
-
-* LUCENE-2123 (3.0.1 only): Removed the protected inner class ScoreTerm
- from FuzzyQuery. The change was needed because the comparator of this
- class had to be changed in an incompatible way. The class was never
- intended to be public. (Uwe Schindler, Mike McCandless)
-
-Bug fixes
-
- * LUCENE-2092: BooleanQuery was ignoring disableCoord in its hashCode
- and equals methods, cause bad things to happen when caching
- BooleanQueries. (Chris Hostetter, Mike McCandless)
-
- * LUCENE-2095: Fixes: when two threads call IndexWriter.commit() at
- the same time, it's possible for commit to return control back to
- one of the threads before all changes are actually committed.
- (Sanne Grinovero via Mike McCandless)
-
- * LUCENE-2132 (3.0.1 only): Fix the demo result.jsp to use QueryParser
- with a Version argument. (Brian Li via Robert Muir)
-
- * LUCENE-2166: Don't incorrectly keep warning about the same immense
- term, when IndexWriter.infoStream is on. (Mike McCandless)
-
- * LUCENE-2158: At high indexing rates, NRT reader could temporarily
- lose deletions. (Mike McCandless)
-
- * LUCENE-2182: DEFAULT_ATTRIBUTE_FACTORY was failing to load
- implementation class when interface was loaded by a different
- class loader. (Uwe Schindler, reported on java-user by Ahmed El-dawy)
-
- * LUCENE-2257: Increase max number of unique terms in one segment to
- termIndexInterval (default 128) * ~2.1 billion = ~274 billion.
- (Tom Burton-West via Mike McCandless)
-
- * LUCENE-2260: Fixed AttributeSource to not hold a strong
- reference to the Attribute/AttributeImpl classes which prevents
- unloading of custom attributes loaded by other classloaders
- (e.g. in Solr plugins). (Uwe Schindler)
-
- * LUCENE-1941: Fix Min/MaxPayloadFunction returns 0 when
- only one payload is present. (Erik Hatcher, Mike McCandless
- via Uwe Schindler)
-
- * LUCENE-2270: Queries consisting of all zero-boost clauses
- (for example, text:foo^0) sorted incorrectly and produced
- invalid docids. (yonik)
-
-API Changes
-
- * LUCENE-1609 (3.0.1 only): Restore IndexReader.getTermInfosIndexDivisor
- (it was accidentally removed in 3.0.0) (Mike McCandless)
-
- * LUCENE-1972 (3.0.1 only): Restore SortField.getComparatorSource
- (it was accidentally removed in 3.0.0) (John Wang via Uwe Schindler)
-
- * LUCENE-2190: Added a new class CustomScoreProvider to function package
- that can be subclassed to provide custom scoring to CustomScoreQuery.
- The methods in CustomScoreQuery that did this before were deprecated
- and replaced by a method getCustomScoreProvider(IndexReader) that
- returns a custom score implementation using the above class. The change
- is necessary with per-segment searching, as CustomScoreQuery is
- a stateless class (like all other Queries) and does not know about
- the currently searched segment. This API works similar to Filter's
- getDocIdSet(IndexReader). (Paul chez Jamespot via Mike McCandless,
- Uwe Schindler)
-
- * LUCENE-2080: Deprecate Version.LUCENE_CURRENT, as using this constant
- will cause backwards compatibility problems when upgrading Lucene. See
- the Version javadocs for additional information.
- (Robert Muir)
-
-Optimizations
-
- * LUCENE-2086: When resolving deleted terms, do so in term sort order
- for better performance (Bogdan Ghidireac via Mike McCandless)
-
- * LUCENE-2123 (partly, 3.0.1 only): Fixes a slowdown / memory issue
- added by LUCENE-504. (Uwe Schindler, Robert Muir, Mike McCandless)
-
- * LUCENE-2258: Remove unneeded synchronization in FuzzyTermEnum.
- (Uwe Schindler, Robert Muir)
-
-Test Cases
-
- * LUCENE-2114: Change TestFilteredSearch to test on multi-segment
- index as well. (Simon Willnauer via Mike McCandless)
-
- * LUCENE-2211: Improves BaseTokenStreamTestCase to use a fake attribute
- that checks if clearAttributes() was called correctly.
- (Uwe Schindler, Robert Muir)
-
- * LUCENE-2207, LUCENE-2219: Improve BaseTokenStreamTestCase to check if
- end() is implemented correctly. (Koji Sekiguchi, Robert Muir)
-
-Documentation
-
- * LUCENE-2114: Improve javadocs of Filter to call out that the
- provided reader is per-segment (Simon Willnauer via Mike
- McCandless)
-
-======================= Release 3.0.0 =======================
-
-Changes in backwards compatibility policy
-
-* LUCENE-1979: Change return type of SnapshotDeletionPolicy#snapshot()
- from IndexCommitPoint to IndexCommit. Code that uses this method
- needs to be recompiled against Lucene 3.0 in order to work. The
- previously deprecated IndexCommitPoint is also removed.
- (Michael Busch)
-
-* o.a.l.Lock.isLocked() is now allowed to throw an IOException.
- (Mike McCandless)
-
-* LUCENE-2030: CachingWrapperFilter and CachingSpanFilter now hide
- the internal cache implementation for thread safety, before it was
- declared protected. (Peter Lenahan, Uwe Schindler, Simon Willnauer)
-
-* LUCENE-2053: If you call Thread.interrupt() on a thread inside
- Lucene, Lucene will do its best to interrupt the thread. However,
- instead of throwing InterruptedException (which is a checked
- exception), you'll get an oal.util.ThreadInterruptedException (an
- unchecked exception, subclassing RuntimeException). The interrupt
- status on the thread is cleared when this exception is thrown.
- (Mike McCandless)
-
-* LUCENE-2052: Some methods in Lucene core were changed to accept
- Java 5 varargs. This is not a backwards compatibility problem as
- long as you not try to override such a method. We left common
- overridden methods unchanged and added varargs to constructors,
- static, or final methods (MultiSearcher,...). (Uwe Schindler)
-
-* LUCENE-1558: IndexReader.open(Directory) now opens a readOnly=true
- reader, and new IndexSearcher(Directory) does the same. Note that
- this is a change in the default from 2.9, when these methods were
- previously deprecated. (Mike McCandless)
-
-* LUCENE-1753: Make not yet final TokenStreams final to enforce
- decorator pattern. (Uwe Schindler)
-
-Changes in runtime behavior
-
-* LUCENE-1677: Remove the system property to set SegmentReader class
- implementation. (Uwe Schindler)
-
-* LUCENE-1960: As a consequence of the removal of Field.Store.COMPRESS,
- support for this type of fields was removed. Lucene 3.0 is still able
- to read indexes with compressed fields, but as soon as merges occur
- or the index is optimized, all compressed fields are decompressed
- and converted to Field.Store.YES. Because of this, indexes with
- compressed fields can suddenly get larger. Also the first merge with
- decompression cannot be done in raw mode, it is therefore slower.
- This change has no effect for code that uses such old indexes,
- they behave as before (fields are automatically decompressed
- during read). Indexes converted to Lucene 3.0 format cannot be read
- anymore with previous versions.
- It is recommended to optimize your indexes after upgrading to convert
- to the new format and decompress all fields.
- If you want compressed fields, you can use CompressionTools, that
- creates compressed byte[] to be added as binary stored field. This
- cannot be done automatically, as you also have to decompress such
- fields when reading. You have to reindex to do that.
- (Michael Busch, Uwe Schindler)
-
-* LUCENE-2060: Changed ConcurrentMergeScheduler's default for
- maxNumThreads from 3 to 1, because in practice we get the most
- gains from running a single merge in the background. More than one
- concurrent merge causes a lot of thrashing (though it's possible on
- SSD storage that there would be net gains). (Jason Rutherglen,
- Mike McCandless)
-
-API Changes
-
-* LUCENE-1257, LUCENE-1984, LUCENE-1985, LUCENE-2057, LUCENE-1833, LUCENE-2012,
- LUCENE-1998: Port to Java 1.5:
-
- - Add generics to public and internal APIs (see below).
- - Replace new Integer(int), new Double(double),... by static valueOf() calls.
- - Replace for-loops with Iterator by foreach loops.
- - Replace StringBuffer with StringBuilder.
- - Replace o.a.l.util.Parameter by Java 5 enums (see below).
- - Add @Override annotations.
- (Uwe Schindler, Robert Muir, Karl Wettin, Paul Elschot, Kay Kay, Shai Erera,
- DM Smith)
-
-* Generify Lucene API:
-
- - TokenStream/AttributeSource: Now addAttribute()/getAttribute() return an
- instance of the requested attribute interface and no cast needed anymore
- (LUCENE-1855).
- - NumericRangeQuery, NumericRangeFilter, and FieldCacheRangeFilter
- now have Integer, Long, Float, Double as type param (LUCENE-1857).
- - Document.getFields() returns List<Fieldable>.
- - Query.extractTerms(Set<Term>)
- - CharArraySet and stop word sets in core/contrib
- - PriorityQueue (LUCENE-1935)
- - TopDocCollector
- - DisjunctionMaxQuery (LUCENE-1984)
- - MultiTermQueryWrapperFilter
- - CloseableThreadLocal
- - MapOfSets
- - o.a.l.util.cache package
- - lot's of internal APIs of IndexWriter
- (Uwe Schindler, Michael Busch, Kay Kay, Robert Muir, Adriano Crestani)
-
-* LUCENE-1944, LUCENE-1856, LUCENE-1957, LUCENE-1960, LUCENE-1961,
- LUCENE-1968, LUCENE-1970, LUCENE-1946, LUCENE-1971, LUCENE-1975,
- LUCENE-1972, LUCENE-1978, LUCENE-944, LUCENE-1979, LUCENE-1973, LUCENE-2011:
- Remove deprecated methods/constructors/classes:
-
- - Remove all String/File directory paths in IndexReader /
- IndexSearcher / IndexWriter.
- - Remove FSDirectory.getDirectory()
- - Make FSDirectory abstract.
- - Remove Field.Store.COMPRESS (see above).
- - Remove Filter.bits(IndexReader) method and make
- Filter.getDocIdSet(IndexReader) abstract.
- - Remove old DocIdSetIterator methods and make the new ones abstract.
- - Remove some methods in PriorityQueue.
- - Remove old TokenStream API and backwards compatibility layer.
- - Remove RangeQuery, RangeFilter and ConstantScoreRangeQuery.
- - Remove SpanQuery.getTerms().
- - Remove ExtendedFieldCache, custom and auto caches, SortField.AUTO.
- - Remove old-style custom sort.
- - Remove legacy search setting in SortField.
- - Remove Hits and all references from core and contrib.
- - Remove HitCollector and its TopDocs support implementations.
- - Remove term field and accessors in MultiTermQuery
- (and fix Highlighter).
- - Remove deprecated methods in BooleanQuery.
- - Remove deprecated methods in Similarity.
- - Remove BoostingTermQuery.
- - Remove MultiValueSource.
- - Remove Scorer.explain(int).
- ...and some other minor ones (Uwe Schindler, Michael Busch, Mark Miller)
-
-* LUCENE-1925: Make IndexSearcher's subReaders and docStarts members
- protected; add expert ctor to directly specify reader, subReaders
- and docStarts. (John Wang, Tim Smith via Mike McCandless)
-
-* LUCENE-1945: All public classes that have a close() method now
- also implement java.io.Closeable (IndexReader, IndexWriter, Directory,...).
- (Uwe Schindler)
-
-* LUCENE-1998: Change all Parameter instances to Java 5 enums. This
- is no backwards-break, only a change of the super class. Parameter
- was deprecated and will be removed in a later version.
- (DM Smith, Uwe Schindler)
-
-Bug fixes
-
-* LUCENE-1951: When the text provided to WildcardQuery has no wildcard
- characters (ie matches a single term), don't lose the boost and
- rewrite method settings. Also, rewrite to PrefixQuery if the
- wildcard is form "foo*", for slightly faster performance. (Robert
- Muir via Mike McCandless)
-
-* LUCENE-2013: SpanRegexQuery does not work with QueryScorer.
- (Benjamin Keil via Mark Miller)
-
-* LUCENE-2088: addAttribute() should only accept interfaces that
- extend Attribute. (Shai Erera, Uwe Schindler)
-
-* LUCENE-2045: Fix silly FileNotFoundException hit if you enable
- infoStream on IndexWriter and then add an empty document and commit
- (Shai Erera via Mike McCandless)
-
-* LUCENE-2046: IndexReader should not see the index as changed, after
- IndexWriter.prepareCommit has been called but before
- IndexWriter.commit is called. (Peter Keegan via Mike McCandless)
-
-New features
-
-* LUCENE-1933: Provide a convenience AttributeFactory that creates a
- Token instance for all basic attributes. (Uwe Schindler)
-
-* LUCENE-2041: Parallelize the rest of ParallelMultiSearcher. Lots of
- code refactoring and Java 5 concurrent support in MultiSearcher.
- (Joey Surls, Simon Willnauer via Uwe Schindler)
-
-* LUCENE-2051: Add CharArraySet.copy() as a simple method to copy
- any Set<?> to a CharArraySet that is optimized, if Set<?> is already
- an CharArraySet. (Simon Willnauer)
-
-Optimizations
-
-* LUCENE-1183: Optimize Levenshtein Distance computation in
- FuzzyQuery. (Cédrik Lime via Mike McCandless)
-
-* LUCENE-2006: Optimization of FieldDocSortedHitQueue to always
- use Comparable<?> interface. (Uwe Schindler, Mark Miller)
-
-* LUCENE-2087: Remove recursion in NumericRangeTermEnum.
- (Uwe Schindler)
-
-Build
-
-* LUCENE-486: Remove test->demo dependencies. (Michael Busch)
-
-* LUCENE-2024: Raise build requirements to Java 1.5 and ANT 1.7.0
- (Uwe Schindler, Mike McCandless)
-
-======================= Release 2.9.1 =======================
-
-Changes in backwards compatibility policy
-
- * LUCENE-2002: Add required Version matchVersion argument when
- constructing QueryParser or MultiFieldQueryParser and, default (as
- of 2.9) enablePositionIncrements to true to match
- StandardAnalyzer's 2.9 default (Uwe Schindler, Mike McCandless)
-
-Bug fixes
-
- * LUCENE-1974: Fixed nasty bug in BooleanQuery (when it used
- BooleanScorer for scoring), whereby some matching documents fail to
- be collected. (Fulin Tang via Mike McCandless)
-
- * LUCENE-1124: Make sure FuzzyQuery always matches the precise term.
- (stefatwork@gmail.com via Mike McCandless)
-
- * LUCENE-1976: Fix IndexReader.isCurrent() to return the right thing
- when the reader is a near real-time reader. (Jake Mannix via Mike
- McCandless)
-
- * LUCENE-1986: Fix NPE when scoring PayloadNearQuery (Peter Keegan,
- Mark Miller via Mike McCandless)
-
- * LUCENE-1992: Fix thread hazard if a merge is committing just as an
- exception occurs during sync (Uwe Schindler, Mike McCandless)
-
- * LUCENE-1995: Note in javadocs that IndexWriter.setRAMBufferSizeMB
- cannot exceed 2048 MB, and throw IllegalArgumentException if it
- does. (Aaron McKee, Yonik Seeley, Mike McCandless)
-
- * LUCENE-2004: Fix Constants.LUCENE_MAIN_VERSION to not be inlined
- by client code. (Uwe Schindler)
-
- * LUCENE-2016: Replace illegal U+FFFF character with the replacement
- char (U+FFFD) during indexing, to prevent silent index corruption.
- (Peter Keegan, Mike McCandless)
-
-API Changes
-
- * Un-deprecate search(Weight weight, Filter filter, int n) from
- Searchable interface (deprecated by accident). (Uwe Schindler)
-
- * Un-deprecate o.a.l.util.Version constants. (Mike McCandless)
-
- * LUCENE-1987: Un-deprecate some ctors of Token, as they will not
- be removed in 3.0 and are still useful. Also add some missing
- o.a.l.util.Version constants for enabling invalid acronym
- settings in StandardAnalyzer to be compatible with the coming
- Lucene 3.0. (Uwe Schindler)
-
- * LUCENE-1973: Un-deprecate IndexSearcher.setDefaultFieldSortScoring,
- to allow controlling per-IndexSearcher whether scores are computed
- when sorting by field. (Uwe Schindler, Mike McCandless)
-
- * LUCENE-2043: Make IndexReader.commit(Map<String,String>) public.
- (Mike McCandless)
-
-Documentation
-
- * LUCENE-1955: Fix Hits deprecation notice to point users in right
- direction. (Mike McCandless, Mark Miller)
-
- * Fix javadoc about score tracking done by search methods in Searcher
- and IndexSearcher. (Mike McCandless)
-
- * LUCENE-2008: Javadoc improvements for TokenStream/Tokenizer/Token
- (Luke Nezda via Mike McCandless)
-
-======================= Release 2.9.0 =======================
-
-Changes in backwards compatibility policy
-
- * LUCENE-1575: Searchable.search(Weight, Filter, int, Sort) no
- longer computes a document score for each hit by default. If
- document score tracking is still needed, you can call
- IndexSearcher.setDefaultFieldSortScoring(true, true) to enable
- both per-hit and maxScore tracking; however, this is deprecated
- and will be removed in 3.0.
-
- Alternatively, use Searchable.search(Weight, Filter, Collector)
- and pass in a TopFieldCollector instance, using the following code
- sample:
-
- <code>
- TopFieldCollector tfc = TopFieldCollector.create(sort, numHits, fillFields,
- true /* trackDocScores */,
- true /* trackMaxScore */,
- false /* docsInOrder */);
- searcher.search(query, tfc);
- TopDocs results = tfc.topDocs();
- </code>
-
- Note that your Sort object cannot use SortField.AUTO when you
- directly instantiate TopFieldCollector.
-
- Also, the method search(Weight, Filter, Collector) was added to
- the Searchable interface and the Searcher abstract class to
- replace the deprecated HitCollector versions. If you either
- implement Searchable or extend Searcher, you should change your
- code to implement this method. If you already extend
- IndexSearcher, no further changes are needed to use Collector.
-
- Finally, the values Float.NaN and Float.NEGATIVE_INFINITY are not
- valid scores. Lucene uses these values internally in certain
- places, so if you have hits with such scores, it will cause
- problems. (Shai Erera via Mike McCandless)
-
- * LUCENE-1687: All methods and parsers from the interface ExtendedFieldCache
- have been moved into FieldCache. ExtendedFieldCache is now deprecated and
- contains only a few declarations for binary backwards compatibility.
- ExtendedFieldCache will be removed in version 3.0. Users of FieldCache and
- ExtendedFieldCache will be able to plug in Lucene 2.9 without recompilation.
- The auto cache (FieldCache.getAuto) is now deprecated. Due to the merge of
- ExtendedFieldCache and FieldCache, FieldCache can now additionally return
- long[] and double[] arrays in addition to int[] and float[] and StringIndex.
-
- The interface changes are only notable for users implementing the interfaces,
- which was unlikely done, because there is no possibility to change
- Lucene's FieldCache implementation. (Grant Ingersoll, Uwe Schindler)
-
- * LUCENE-1630, LUCENE-1771: Weight, previously an interface, is now an abstract
- class. Some of the method signatures have changed, but it should be fairly
- easy to see what adjustments must be made to existing code to sync up
- with the new API. You can find more detail in the API Changes section.
-
- Going forward Searchable will be kept for convenience only and may
- be changed between minor releases without any deprecation
- process. It is not recommended that you implement it, but rather extend
- Searcher.
- (Shai Erera, Chris Hostetter, Martin Ruckli, Mark Miller via Mike McCandless)
-
- * LUCENE-1422, LUCENE-1693: The new Attribute based TokenStream API (see below)
- has some backwards breaks in rare cases. We did our best to make the
- transition as easy as possible and you are not likely to run into any problems.
- If your tokenizers still implement next(Token) or next(), the calls are
- automatically wrapped. The indexer and query parser use the new API
- (eg use incrementToken() calls). All core TokenStreams are implemented using
- the new API. You can mix old and new API style TokenFilters/TokenStream.
- Problems only occur when you have done the following:
- You have overridden next(Token) or next() in one of the non-abstract core
- TokenStreams/-Filters. These classes should normally be final, but some
- of them are not. In this case, next(Token)/next() would never be called.
- To fail early with a hard compile/runtime error, the next(Token)/next()
- methods in these TokenStreams/-Filters were made final in this release.
- (Michael Busch, Uwe Schindler)
-
- * LUCENE-1763: MergePolicy now requires an IndexWriter instance to
- be passed upon instantiation. As a result, IndexWriter was removed
- as a method argument from all MergePolicy methods. (Shai Erera via
- Mike McCandless)
-
- * LUCENE-1748: LUCENE-1001 introduced PayloadSpans, but this was a back
- compat break and caused custom SpanQuery implementations to fail at runtime
- in a variety of ways. This issue attempts to remedy things by causing
- a compile time break on custom SpanQuery implementations and removing
- the PayloadSpans class, with its functionality now moved to Spans. To
- help in alleviating future back compat pain, Spans has been changed from
- an interface to an abstract class.
- (Hugh Cayless, Mark Miller)
-
- * LUCENE-1808: Query.createWeight has been changed from protected to
- public. This will be a back compat break if you have overridden this
- method - but you are likely already affected by the LUCENE-1693 (make Weight
- abstract rather than an interface) back compat break if you have overridden
- Query.creatWeight, so we have taken the opportunity to make this change.
- (Tim Smith, Shai Erera via Mark Miller)
-
- * LUCENE-1708 - IndexReader.document() no longer checks if the document is
- deleted. You can call IndexReader.isDeleted(n) prior to calling document(n).
- (Shai Erera via Mike McCandless)
-
-
-Changes in runtime behavior
-
- * LUCENE-1424: QueryParser now by default uses constant score auto
- rewriting when it generates a WildcardQuery and PrefixQuery (it
- already does so for TermRangeQuery, as well). Call
- setMultiTermRewriteMethod(MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE)
- to revert to slower BooleanQuery rewriting method. (Mark Miller via Mike
- McCandless)
-
- * LUCENE-1575: As of 2.9, the core collectors as well as
- IndexSearcher's search methods that return top N results, no
- longer filter documents with scores <= 0.0. If you rely on this
- functionality you can use PositiveScoresOnlyCollector like this:
-
- <code>
- TopDocsCollector tdc = new TopScoreDocCollector(10);
- Collector c = new PositiveScoresOnlyCollector(tdc);
- searcher.search(query, c);
- TopDocs hits = tdc.topDocs();
- ...
- </code>
-
- * LUCENE-1604: IndexReader.norms(String field) is now allowed to
- return null if the field has no norms, as long as you've
- previously called IndexReader.setDisableFakeNorms(true). This
- setting now defaults to false (to preserve the fake norms back
- compatible behavior) but in 3.0 will be hardwired to true. (Shon
- Vella via Mike McCandless).
-
- * LUCENE-1624: If you open IndexWriter with create=true and
- autoCommit=false on an existing index, IndexWriter no longer
- writes an empty commit when it's created. (Paul Taylor via Mike
- McCandless)
-
- * LUCENE-1593: When you call Sort() or Sort.setSort(String field,
- boolean reverse), the resulting SortField array no longer ends
- with SortField.FIELD_DOC (it was unnecessary as Lucene breaks ties
- internally by docID). (Shai Erera via Michael McCandless)
-
- * LUCENE-1542: When the first token(s) have 0 position increment,
- IndexWriter used to incorrectly record the position as -1, if no
- payload is present, or Integer.MAX_VALUE if a payload is present.
- This causes positional queries to fail to match. The bug is now
- fixed, but if your app relies on the buggy behavior then you must
- call IndexWriter.setAllowMinus1Position(). That API is deprecated
- so you must fix your application, and rebuild your index, to not
- rely on this behavior by the 3.0 release of Lucene. (Jonathan
- Mamou, Mark Miller via Mike McCandless)
-
-
- * LUCENE-1715: Finalizers have been removed from the 4 core classes
- that still had them, since they will cause GC to take longer, thus
- tying up memory for longer, and at best they mask buggy app code.
- DirectoryReader (returned from IndexReader.open) & IndexWriter
- previously released the write lock during finalize.
- SimpleFSDirectory.FSIndexInput closed the descriptor in its
- finalizer, and NativeFSLock released the lock. It's possible
- applications will be affected by this, but only if the application
- is failing to close reader/writers. (Brian Groose via Mike
- McCandless)
-
- * LUCENE-1717: Fixed IndexWriter to account for RAM usage of
- buffered deletions. (Mike McCandless)
-
- * LUCENE-1727: Ensure that fields are stored & retrieved in the
- exact order in which they were added to the document. This was
- true in all Lucene releases before 2.3, but was broken in 2.3 and
- 2.4, and is now fixed in 2.9. (Mike McCandless)
-
- * LUCENE-1678: The addition of Analyzer.reusableTokenStream
- accidentally broke back compatibility of external analyzers that
- subclassed core analyzers that implemented tokenStream but not
- reusableTokenStream. This is now fixed, such that if
- reusableTokenStream is invoked on such a subclass, that method
- will forcefully fallback to tokenStream. (Mike McCandless)
-
- * LUCENE-1801: Token.clear() and Token.clearNoTermBuffer() now also clear
- startOffset, endOffset and type. This is not likely to affect any
- Tokenizer chains, as Tokenizers normally always set these three values.
- This change was made to be conform to the new AttributeImpl.clear() and
- AttributeSource.clearAttributes() to work identical for Token as one for all
- AttributeImpl and the 6 separate AttributeImpls. (Uwe Schindler, Michael Busch)
-
- * LUCENE-1483: When searching over multiple segments, a new Scorer is now created
- for each segment. Searching has been telescoped out a level and IndexSearcher now
- operates much like MultiSearcher does. The Weight is created only once for the top
- level Searcher, but each Scorer is passed a per-segment IndexReader. This will
- result in doc ids in the Scorer being internal to the per-segment IndexReader. It
- has always been outside of the API to count on a given IndexReader to contain every
- doc id in the index - and if you have been ignoring MultiSearcher in your custom code
- and counting on this fact, you will find your code no longer works correctly. If a
- custom Scorer implementation uses any caches/filters that rely on being based on the
- top level IndexReader, it will need to be updated to correctly use contextless
- caches/filters eg you can't count on the IndexReader to contain any given doc id or
- all of the doc ids. (Mark Miller, Mike McCandless)
-
- * LUCENE-1846: DateTools now uses the US locale to format the numbers in its
- date/time strings instead of the default locale. For most locales there will
- be no change in the index format, as DateFormatSymbols is using ASCII digits.
- The usage of the US locale is important to guarantee correct ordering of
- generated terms. (Uwe Schindler)
-
- * LUCENE-1860: MultiTermQuery now defaults to
- CONSTANT_SCORE_AUTO_REWRITE_DEFAULT rewrite method (previously it
- was SCORING_BOOLEAN_QUERY_REWRITE). This means that PrefixQuery
- and WildcardQuery will now produce constant score for all matching
- docs, equal to the boost of the query. (Mike McCandless)
-
-API Changes
-
- * LUCENE-1419: Add expert API to set custom indexing chain. This API is
- package-protected for now, so we don't have to officially support it.
- Yet, it will give us the possibility to try out different consumers
- in the chain. (Michael Busch)
-
- * LUCENE-1427: DocIdSet.iterator() is now allowed to throw
- IOException. (Paul Elschot, Mike McCandless)
-
- * LUCENE-1422, LUCENE-1693: New TokenStream API that uses a new class called
- AttributeSource instead of the Token class, which is now a utility class that
- holds common Token attributes. All attributes that the Token class had have
- been moved into separate classes: TermAttribute, OffsetAttribute,
- PositionIncrementAttribute, PayloadAttribute, TypeAttribute and FlagsAttribute.
- The new API is much more flexible; it allows to combine the Attributes
- arbitrarily and also to define custom Attributes. The new API has the same
- performance as the old next(Token) approach. For conformance with this new
- API Tee-/SinkTokenizer was deprecated and replaced by a new TeeSinkTokenFilter.
- (Michael Busch, Uwe Schindler; additional contributions and bug fixes by
- Daniel Shane, Doron Cohen)
-
- * LUCENE-1467: Add nextDoc() and next(int) methods to OpenBitSetIterator.
- These methods can be used to avoid additional calls to doc().
- (Michael Busch)
-
- * LUCENE-1468: Deprecate Directory.list(), which sometimes (in
- FSDirectory) filters out files that don't look like index files, in
- favor of new Directory.listAll(), which does no filtering. Also,
- listAll() will never return null; instead, it throws an IOException
- (or subclass). Specifically, FSDirectory.listAll() will throw the
- newly added NoSuchDirectoryException if the directory does not
- exist. (Marcel Reutegger, Mike McCandless)
-
- * LUCENE-1546: Add IndexReader.flush(Map commitUserData), allowing
- you to record an opaque commitUserData (maps String -> String) into
- the commit written by IndexReader. This matches IndexWriter's
- commit methods. (Jason Rutherglen via Mike McCandless)
-
- * LUCENE-652: Added org.apache.lucene.document.CompressionTools, to
- enable compressing & decompressing binary content, external to
- Lucene's indexing. Deprecated Field.Store.COMPRESS.
-
- * LUCENE-1561: Renamed Field.omitTf to Field.omitTermFreqAndPositions
- (Otis Gospodnetic via Mike McCandless)
-
- * LUCENE-1500: Added new InvalidTokenOffsetsException to Highlighter methods
- to denote issues when offsets in TokenStream tokens exceed the length of the
- provided text. (Mark Harwood)
-
- * LUCENE-1575, LUCENE-1483: HitCollector is now deprecated in favor of
- a new Collector abstract class. For easy migration, people can use
- HitCollectorWrapper which translates (wraps) HitCollector into
- Collector. Note that this class is also deprecated and will be
- removed when HitCollector is removed. Also TimeLimitedCollector
- is deprecated in favor of the new TimeLimitingCollector which
- extends Collector. (Shai Erera, Mark Miller, Mike McCandless)
-
- * LUCENE-1592: The method TermsEnum.skipTo() was deprecated, because
- it is used nowhere in core/contrib and there is only a very ineffective
- default implementation available. If you want to position a TermEnum
- to another Term, create a new one using IndexReader.terms(Term).
- (Uwe Schindler)
-
- * LUCENE-1621: MultiTermQuery.getTerm() has been deprecated as it does
- not make sense for all subclasses of MultiTermQuery. Check individual
- subclasses to see if they support getTerm(). (Mark Miller)
-
- * LUCENE-1636: Make TokenFilter.input final so it's set only
- once. (Wouter Heijke, Uwe Schindler via Mike McCandless).
-
- * LUCENE-1658, LUCENE-1451: Renamed FSDirectory to SimpleFSDirectory
- (but left an FSDirectory base class). Added an FSDirectory.open
- static method to pick a good default FSDirectory implementation
- given the OS. FSDirectories should now be instantiated using
- FSDirectory.open or with public constructors rather than
- FSDirectory.getDirectory(), which has been deprecated.
- (Michael McCandless, Uwe Schindler, yonik)
-
- * LUCENE-1665: Deprecate SortField.AUTO, to be removed in 3.0.
- Instead, when sorting by field, the application should explicitly
- state the type of the field. (Mike McCandless)
-
- * LUCENE-1660: StopFilter, StandardAnalyzer, StopAnalyzer now
- require up front specification of enablePositionIncrement (Mike
- McCandless)
-
- * LUCENE-1614: DocIdSetIterator's next() and skipTo() were deprecated in favor
- of the new nextDoc() and advance(). The new methods return the doc Id they
- landed on, saving an extra call to doc() in most cases.
- For easy migration of the code, you can change the calls to next() to
- nextDoc() != DocIdSetIterator.NO_MORE_DOCS and similarly for skipTo().
- However it is advised that you take advantage of the returned doc ID and not
- call doc() following those two.
- Also, doc() was deprecated in favor of docID(). docID() should return -1 or
- NO_MORE_DOCS if nextDoc/advance were not called yet, or NO_MORE_DOCS if the
- iterator has exhausted. Otherwise it should return the current doc ID.
- (Shai Erera via Mike McCandless)
-
- * LUCENE-1672: All ctors/opens and other methods using String/File to
- specify the directory in IndexReader, IndexWriter, and IndexSearcher
- were deprecated. You should instantiate the Directory manually before
- and pass it to these classes (LUCENE-1451, LUCENE-1658).
- (Uwe Schindler)
-
- * LUCENE-1407: Move RemoteSearchable, RemoteCachingWrapperFilter out
- of Lucene's core into new contrib/remote package. Searchable no
- longer extends java.rmi.Remote (Simon Willnauer via Mike
- McCandless)
-
- * LUCENE-1677: The global property
- org.apache.lucene.SegmentReader.class, and
- ReadOnlySegmentReader.class are now deprecated, to be removed in
- 3.0. src/gcj/* has been removed. (Earwin Burrfoot via Mike
- McCandless)
-
- * LUCENE-1673: Deprecated NumberTools in favour of the new
- NumericRangeQuery and its new indexing format for numeric or
- date values. (Uwe Schindler)
-
- * LUCENE-1630, LUCENE-1771: Weight is now an abstract class, and adds
- a scorer(IndexReader, boolean /* scoreDocsInOrder */, boolean /*
- topScorer */) method instead of scorer(IndexReader). IndexSearcher uses
- this method to obtain a scorer matching the capabilities of the Collector
- wrt orderedness of docIDs. Some Scorers (like BooleanScorer) are much more
- efficient if out-of-order documents scoring is allowed by a Collector.
- Collector must now implement acceptsDocsOutOfOrder. If you write a
- Collector which does not care about doc ID orderness, it is recommended
- that you return true. Weight has a scoresDocsOutOfOrder method, which by
- default returns false. If you create a Weight which will score documents
- out of order if requested, you should override that method to return true.
- BooleanQuery's setAllowDocsOutOfOrder and getAllowDocsOutOfOrder have been
- deprecated as they are not needed anymore. BooleanQuery will now score docs
- out of order when used with a Collector that can accept docs out of order.
- Finally, Weight#explain now takes a sub-reader and sub-docID, rather than
- a top level reader and docID.
- (Shai Erera, Chris Hostetter, Martin Ruckli, Mark Miller via Mike McCandless)
-
- * LUCENE-1466, LUCENE-1906: Added CharFilter and MappingCharFilter, which allows
- chaining & mapping of characters before tokenizers run. CharStream (subclass of
- Reader) is the base class for custom java.io.Reader's, that support offset
- correction. Tokenizers got an additional method correctOffset() that is passed
- down to the underlying CharStream if input is a subclass of CharStream/-Filter.
- (Koji Sekiguchi via Mike McCandless, Uwe Schindler)
-
- * LUCENE-1703: Add IndexWriter.waitForMerges. (Tim Smith via Mike
- McCandless)
-
- * LUCENE-1625: CheckIndex's programmatic API now returns separate
- classes detailing the status of each component in the index, and
- includes more detailed status than previously. (Tim Smith via
- Mike McCandless)
-
- * LUCENE-1713: Deprecated RangeQuery and RangeFilter and renamed to
- TermRangeQuery and TermRangeFilter. TermRangeQuery is in constant
- score auto rewrite mode by default. The new classes also have new
- ctors taking field and term ranges as Strings (see also
- LUCENE-1424). (Uwe Schindler)
-
- * LUCENE-1609: The termInfosIndexDivisor must now be specified
- up-front when opening the IndexReader. Attempts to call
- IndexReader.setTermInfosIndexDivisor will hit an
- UnsupportedOperationException. This was done to enable removal of
- all synchronization in TermInfosReader, which previously could
- cause threads to pile up in certain cases. (Dan Rosher via Mike
- McCandless)
-
- * LUCENE-1688: Deprecate static final String stop word array in and
- StopAnalzyer and replace it with an immutable implementation of
- CharArraySet. (Simon Willnauer via Mark Miller)
-
- * LUCENE-1742: SegmentInfos, SegmentInfo and SegmentReader have been
- made public as expert, experimental APIs. These APIs may suddenly
- change from release to release (Jason Rutherglen via Mike
- McCandless).
-
- * LUCENE-1754: QueryWeight.scorer() can return null if no documents
- are going to be matched by the query. Similarly,
- Filter.getDocIdSet() can return null if no documents are going to
- be accepted by the Filter. Note that these 'can' return null,
- however they don't have to and can return a Scorer/DocIdSet which
- does not match / reject all documents. This is already the
- behavior of some QueryWeight/Filter implementations, and is
- documented here just for emphasis. (Shai Erera via Mike
- McCandless)
-
- * LUCENE-1705: Added IndexWriter.deleteAllDocuments. (Tim Smith via
- Mike McCandless)
-
- * LUCENE-1460: Changed TokenStreams/TokenFilters in contrib to
- use the new TokenStream API. (Robert Muir, Michael Busch)
-
- * LUCENE-1748: LUCENE-1001 introduced PayloadSpans, but this was a back
- compat break and caused custom SpanQuery implementations to fail at runtime
- in a variety of ways. This issue attempts to remedy things by causing
- a compile time break on custom SpanQuery implementations and removing
- the PayloadSpans class, with its functionality now moved to Spans. To
- help in alleviating future back compat pain, Spans has been changed from
- an interface to an abstract class.
- (Hugh Cayless, Mark Miller)
-
- * LUCENE-1808: Query.createWeight has been changed from protected to
- public. (Tim Smith, Shai Erera via Mark Miller)
-
- * LUCENE-1826: Add constructors that take AttributeSource and
- AttributeFactory to all Tokenizer implementations.
- (Michael Busch)
-
- * LUCENE-1847: Similarity#idf for both a Term and Term Collection have
- been deprecated. New versions that return an IDFExplanation have been
- added. (Yasoja Seneviratne, Mike McCandless, Mark Miller)
-
- * LUCENE-1877: Made NativeFSLockFactory the default for
- the new FSDirectory API (open(), FSDirectory subclass ctors).
- All FSDirectory system properties were deprecated and all lock
- implementations use no lock prefix if the locks are stored inside
- the index directory. Because the deprecated String/File ctors of
- IndexWriter and IndexReader (LUCENE-1672) and FSDirectory.getDirectory()
- still use the old SimpleFSLockFactory and the new API
- NativeFSLockFactory, we strongly recommend not to mix deprecated
- and new API. (Uwe Schindler, Mike McCandless)
-
- * LUCENE-1911: Added a new method isCacheable() to DocIdSet. This method
- should return true, if the underlying implementation does not use disk
- I/O and is fast enough to be directly cached by CachingWrapperFilter.
- OpenBitSet, SortedVIntList, and DocIdBitSet are such candidates.
- The default implementation of the abstract DocIdSet class returns false.
- In this case, CachingWrapperFilter copies the DocIdSetIterator into an
- OpenBitSet for caching. (Uwe Schindler, Thomas Becker)
-
-Bug fixes
-
- * LUCENE-1415: MultiPhraseQuery has incorrect hashCode() and equals()
- implementation - Leads to Solr Cache misses.
- (Todd Feak, Mark Miller via yonik)
-
- * LUCENE-1327: Fix TermSpans#skipTo() to behave as specified in javadocs
- of Terms#skipTo(). (Michael Busch)
-
- * LUCENE-1573: Do not ignore InterruptedException (caused by
- Thread.interrupt()) nor enter deadlock/spin loop. Now, an interrupt
- will cause a RuntimeException to be thrown. In 3.0 we will change
- public APIs to throw InterruptedException. (Jeremy Volkman via
- Mike McCandless)
-
- * LUCENE-1590: Fixed stored-only Field instances do not change the
- value of omitNorms, omitTermFreqAndPositions in FieldInfo; when you
- retrieve such fields they will now have omitNorms=true and
- omitTermFreqAndPositions=false (though these values are unused).
- (Uwe Schindler via Mike McCandless)
-
- * LUCENE-1587: RangeQuery#equals() could consider a RangeQuery
- without a collator equal to one with a collator.
- (Mark Platvoet via Mark Miller)
-
- * LUCENE-1600: Don't call String.intern unnecessarily in some cases
- when loading documents from the index. (P Eger via Mike
- McCandless)
-
- * LUCENE-1611: Fix case where OutOfMemoryException in IndexWriter
- could cause "infinite merging" to happen. (Christiaan Fluit via
- Mike McCandless)
-
- * LUCENE-1623: Properly handle back-compatibility of 2.3.x indexes that
- contain field names with non-ascii characters. (Mike Streeton via
- Mike McCandless)
-
- * LUCENE-1593: MultiSearcher and ParallelMultiSearcher did not break ties (in
- sort) by doc Id in a consistent manner (i.e., if Sort.FIELD_DOC was used vs.
- when it wasn't). (Shai Erera via Michael McCandless)
-
- * LUCENE-1647: Fix case where IndexReader.undeleteAll would cause
- the segment's deletion count to be incorrect. (Mike McCandless)
-
- * LUCENE-1542: When the first token(s) have 0 position increment,
- IndexWriter used to incorrectly record the position as -1, if no
- payload is present, or Integer.MAX_VALUE if a payload is present.
- This causes positional queries to fail to match. The bug is now
- fixed, but if your app relies on the buggy behavior then you must
- call IndexWriter.setAllowMinus1Position(). That API is deprecated
- so you must fix your application, and rebuild your index, to not
- rely on this behavior by the 3.0 release of Lucene. (Jonathan
- Mamou, Mark Miller via Mike McCandless)
-
- * LUCENE-1658: Fixed MMapDirectory to correctly throw IOExceptions
- on EOF, removed numeric overflow possibilities and added support
- for a hack to unmap the buffers on closing IndexInput.
- (Uwe Schindler)
-
- * LUCENE-1681: Fix infinite loop caused by a call to DocValues methods
- getMinValue, getMaxValue, getAverageValue. (Simon Willnauer via Mark Miller)
-
- * LUCENE-1599: Add clone support for SpanQuerys. SpanRegexQuery counts
- on this functionality and does not work correctly without it.
- (Billow Gao, Mark Miller)
-
- * LUCENE-1718: Fix termInfosIndexDivisor to carry over to reopened
- readers (Mike McCandless)
-
- * LUCENE-1583: SpanOrQuery skipTo() doesn't always move forwards as Spans
- documentation indicates it should. (Moti Nisenson via Mark Miller)
-
- * LUCENE-1566: Sun JVM Bug
- http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6478546 causes
- invalid OutOfMemoryError when reading too many bytes at once from
- a file on 32bit JVMs that have a large maximum heap size. This
- fix adds set/getReadChunkSize to FSDirectory so that large reads
- are broken into chunks, to work around this JVM bug. On 32bit
- JVMs the default chunk size is 100 MB; on 64bit JVMs, which don't
- show the bug, the default is Integer.MAX_VALUE. (Simon Willnauer
- via Mike McCandless)
-
- * LUCENE-1448: Added TokenStream.end() to perform end-of-stream
- operations (ie to return the end offset of the tokenization).
- This is important when multiple fields with the same name are added
- to a document, to ensure offsets recorded in term vectors for all
- of the instances are correct.
- (Mike McCandless, Mark Miller, Michael Busch)
-
- * LUCENE-1805: CloseableThreadLocal did not allow a null Object in get(),
- although it does allow it in set(Object). Fix get() to not assert the object
- is not null. (Shai Erera via Mike McCandless)
-
- * LUCENE-1801: Changed all Tokenizers or TokenStreams in core/contrib)
- that are the source of Tokens to always call
- AttributeSource.clearAttributes() first. (Uwe Schindler)
-
- * LUCENE-1819: MatchAllDocsQuery.toString(field) should produce output
- that is parsable by the QueryParser. (John Wang, Mark Miller)
-
- * LUCENE-1836: Fix localization bug in the new query parser and add
- new LocalizedTestCase as base class for localization junit tests.
- (Robert Muir, Uwe Schindler via Michael Busch)
-
- * LUCENE-1847: PhraseQuery/TermQuery/SpanQuery use IndexReader specific stats
- in their Weight#explain methods - these stats should be corpus wide.
- (Yasoja Seneviratne, Mike McCandless, Mark Miller)
-
- * LUCENE-1885: Fix the bug that NativeFSLock.isLocked() did not work,
- if the lock was obtained by another NativeFSLock(Factory) instance.
- Because of this IndexReader.isLocked() and IndexWriter.isLocked() did
- not work correctly. (Uwe Schindler)
-
- * LUCENE-1899: Fix O(N^2) CPU cost when setting docIDs in order in an
- OpenBitSet, due to an inefficiency in how the underlying storage is
- reallocated. (Nadav Har'El via Mike McCandless)
-
- * LUCENE-1918: Fixed cases where a ParallelReader would
- generate exceptions on being passed to
- IndexWriter.addIndexes(IndexReader[]). First case was when the
- ParallelReader was empty. Second case was when the ParallelReader
- used to contain documents with TermVectors, but all such documents
- have been deleted. (Christian Kohlschütter via Mike McCandless)
-
-New features
-
- * LUCENE-1411: Added expert API to open an IndexWriter on a prior
- commit, obtained from IndexReader.listCommits. This makes it
- possible to rollback changes to an index even after you've closed
- the IndexWriter that made the changes, assuming you are using an
- IndexDeletionPolicy that keeps past commits around. This is useful
- when building transactional support on top of Lucene. (Mike
- McCandless)
-
- * LUCENE-1382: Add an optional arbitrary Map (String -> String)
- "commitUserData" to IndexWriter.commit(), which is stored in the
- segments file and is then retrievable via
- IndexReader.getCommitUserData instance and static methods.
- (Shalin Shekhar Mangar via Mike McCandless)
-
- * LUCENE-1420: Similarity now has a computeNorm method that allows
- custom Similarity classes to override how norm is computed. It's
- provided a FieldInvertState instance that contains details from
- inverting the field. The default impl is boost *
- lengthNorm(numTerms), to be backwards compatible. Also added
- {set/get}DiscountOverlaps to DefaultSimilarity, to control whether
- overlapping tokens (tokens with 0 position increment) should be
- counted in lengthNorm. (Andrzej Bialecki via Mike McCandless)
-
- * LUCENE-1424: Moved constant score query rewrite capability into
- MultiTermQuery, allowing TermRangeQuery, PrefixQuery and WildcardQuery
- to switch between constant-score rewriting or BooleanQuery
- expansion rewriting via a new setRewriteMethod method.
- Deprecated ConstantScoreRangeQuery (Mark Miller via Mike
- McCandless)
-
- * LUCENE-1461: Added FieldCacheRangeFilter, a RangeFilter for
- single-term fields that uses FieldCache to compute the filter. If
- your documents all have a single term for a given field, and you
- need to create many RangeFilters with varying lower/upper bounds,
- then this is likely a much faster way to create the filters than
- RangeFilter. FieldCacheRangeFilter allows ranges on all data types,
- FieldCache supports (term ranges, byte, short, int, long, float, double).
- However, it comes at the expense of added RAM consumption and slower
- first-time usage due to populating the FieldCache. It also does not
- support collation (Tim Sturge, Matt Ericson via Mike McCandless and
- Uwe Schindler)
-
- * LUCENE-1296: add protected method CachingWrapperFilter.docIdSetToCache
- to allow subclasses to choose which DocIdSet implementation to use
- (Paul Elschot via Mike McCandless)
-
- * LUCENE-1390: Added ASCIIFoldingFilter, a Filter that converts
- alphabetic, numeric, and symbolic Unicode characters which are not in
- the first 127 ASCII characters (the "Basic Latin" Unicode block) into
- their ASCII equivalents, if one exists. ISOLatin1AccentFilter, which
- handles a subset of this filter, has been deprecated.
- (Andi Vajda, Steven Rowe via Mark Miller)
-
- * LUCENE-1478: Added new SortField constructor allowing you to
- specify a custom FieldCache parser to generate numeric values from
- terms for a field. (Uwe Schindler via Mike McCandless)
-
- * LUCENE-1528: Add support for Ideographic Space to the queryparser.
- (Luis Alves via Michael Busch)
-
- * LUCENE-1487: Added FieldCacheTermsFilter, to filter by multiple
- terms on single-valued fields. The filter loads the FieldCache
- for the field the first time it's called, and subsequent usage of
- that field, even with different Terms in the filter, are fast.
- (Tim Sturge, Shalin Shekhar Mangar via Mike McCandless).
-
- * LUCENE-1314: Add clone(), clone(boolean readOnly) and
- reopen(boolean readOnly) to IndexReader. Cloning an IndexReader
- gives you a new reader which you can make changes to (deletions,
- norms) without affecting the original reader. Now, with clone or
- reopen you can change the readOnly of the original reader. (Jason
- Rutherglen, Mike McCandless)
-
- * LUCENE-1506: Added FilteredDocIdSet, an abstract class which you
- subclass to implement the "match" method to accept or reject each
- docID. Unlike ChainedFilter (under contrib/misc),
- FilteredDocIdSet never requires you to materialize the full
- bitset. Instead, match() is called on demand per docID. (John
- Wang via Mike McCandless)
-
- * LUCENE-1398: Add ReverseStringFilter to contrib/analyzers, a filter
- to reverse the characters in each token. (Koji Sekiguchi via yonik)
-
- * LUCENE-1551: Add expert IndexReader.reopen(IndexCommit) to allow
- efficiently opening a new reader on a specific commit, sharing
- resources with the original reader. (Torin Danil via Mike
- McCandless)
-
- * LUCENE-1434: Added org.apache.lucene.util.IndexableBinaryStringTools,
- to encode byte[] as String values that are valid terms, and
- maintain sort order of the original byte[] when the bytes are
- interpreted as unsigned. (Steven Rowe via Mike McCandless)
-
- * LUCENE-1543: Allow MatchAllDocsQuery to optionally use norms from
- a specific fields to set the score for a document. (Karl Wettin
- via Mike McCandless)
-
- * LUCENE-1586: Add IndexReader.getUniqueTermCount(). (Mike
- McCandless via Derek)
-
- * LUCENE-1516: Added "near real-time search" to IndexWriter, via a
- new expert getReader() method. This method returns a reader that
- searches the full index, including any uncommitted changes in the
- current IndexWriter session. This should result in a faster
- turnaround than the normal approach of commiting the changes and
- then reopening a reader. (Jason Rutherglen via Mike McCandless)
-
- * LUCENE-1603: Added new MultiTermQueryWrapperFilter, to wrap any
- MultiTermQuery as a Filter. Also made some improvements to
- MultiTermQuery: return DocIdSet.EMPTY_DOCIDSET if there are no
- terms in the enum; track the total number of terms it visited
- during rewrite (getTotalNumberOfTerms). FilteredTermEnum is also
- more friendly to subclassing. (Uwe Schindler via Mike McCandless)
-
- * LUCENE-1605: Added BitVector.subset(). (Jeremy Volkman via Mike
- McCandless)
-
- * LUCENE-1618: Added FileSwitchDirectory that enables files with
- specified extensions to be stored in a primary directory and the
- rest of the files to be stored in the secondary directory. For
- example, this can be useful for the large doc-store (stored
- fields, term vectors) files in FSDirectory and the rest of the
- index files in a RAMDirectory. (Jason Rutherglen via Mike
- McCandless)
-
- * LUCENE-1494: Added FieldMaskingSpanQuery which can be used to
- cross-correlate Spans from different fields.
- (Paul Cowan and Chris Hostetter)
-
- * LUCENE-1634: Add calibrateSizeByDeletes to LogMergePolicy, to take
- deletions into account when considering merges. (Yasuhiro Matsuda
- via Mike McCandless)
-
- * LUCENE-1550: Added new n-gram based String distance measure for spell checking.
- See the Javadocs for NGramDistance.java for a reference paper on why
- this is helpful (Tom Morton via Grant Ingersoll)
-
- * LUCENE-1470, LUCENE-1582, LUCENE-1602, LUCENE-1673, LUCENE-1701, LUCENE-1712:
- Added NumericRangeQuery and NumericRangeFilter, a fast alternative to
- RangeQuery/RangeFilter for numeric searches. They depend on a specific
- structure of terms in the index that can be created by indexing
- using the new NumericField or NumericTokenStream classes. NumericField
- can only be used for indexing and optionally stores the values as
- string representation in the doc store. Documents returned from
- IndexReader/IndexSearcher will return only the String value using
- the standard Fieldable interface. NumericFields can be sorted on
- and loaded into the FieldCache. (Uwe Schindler, Yonik Seeley,
- Mike McCandless)
-
- * LUCENE-1405: Added support for Ant resource collections in contrib/ant
- <index> task. (Przemyslaw Sztoch via Erik Hatcher)
-
- * LUCENE-1699: Allow setting a TokenStream on Field/Fieldable for indexing
- in conjunction with any other ways to specify stored field values,
- currently binary or string values. (yonik)
-
- * LUCENE-1701: Made the standard FieldCache.Parsers public and added
- parsers for fields generated using NumericField/NumericTokenStream.
- All standard parsers now also implement Serializable and enforce
- their singleton status. (Uwe Schindler, Mike McCandless)
-
- * LUCENE-1741: User configurable maximum chunk size in MMapDirectory.
- On 32 bit platforms, the address space can be very fragmented, so
- one big ByteBuffer for the whole file may not fit into address space.
- (Eks Dev via Uwe Schindler)
-
- * LUCENE-1644: Enable 4 rewrite modes for queries deriving from
- MultiTermQuery (WildcardQuery, PrefixQuery, TermRangeQuery,
- NumericRangeQuery): CONSTANT_SCORE_FILTER_REWRITE first creates a
- filter and then assigns constant score (boost) to docs;
- CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE create a BooleanQuery but
- uses a constant score (boost); SCORING_BOOLEAN_QUERY_REWRITE also
- creates a BooleanQuery but keeps the BooleanQuery's scores;
- CONSTANT_SCORE_AUTO_REWRITE tries to pick the most performant
- constant-score rewrite method. (Mike McCandless)
-
- * LUCENE-1448: Added TokenStream.end(), to perform end-of-stream
- operations. This is currently used to fix offset problems when
- multiple fields with the same name are added to a document.
- (Mike McCandless, Mark Miller, Michael Busch)
-
- * LUCENE-1776: Add an option to not collect payloads for an ordered
- SpanNearQuery. Payloads were not lazily loaded in this case as
- the javadocs implied. If you have payloads and want to use an ordered
- SpanNearQuery that does not need to use the payloads, you can
- disable loading them with a new constructor switch. (Mark Miller)
-
- * LUCENE-1341: Added PayloadNearQuery to enable SpanNearQuery functionality
- with payloads (Peter Keegan, Grant Ingersoll, Mark Miller)
-
- * LUCENE-1790: Added PayloadTermQuery to enable scoring of payloads
- based on the maximum payload seen for a document.
- Slight refactoring of Similarity and other payload queries (Grant Ingersoll, Mark Miller)
-
- * LUCENE-1749: Addition of FieldCacheSanityChecker utility, and
- hooks to use it in all existing Lucene Tests. This class can
- be used by any application to inspect the FieldCache and provide
- diagnostic information about the possibility of inconsistent
- FieldCache usage. Namely: FieldCache entries for the same field
- with different datatypes or parsers; and FieldCache entries for
- the same field in both a reader, and one of it's (descendant) sub
- readers.
- (Chris Hostetter, Mark Miller)
-
- * LUCENE-1789: Added utility class
- oal.search.function.MultiValueSource to ease the transition to
- segment based searching for any apps that directly call
- oal.search.function.* APIs. This class wraps any other
- ValueSource, but takes care when composite (multi-segment) are
- passed to not double RAM usage in the FieldCache. (Chris
- Hostetter, Mark Miller, Mike McCandless)
-
-Optimizations
-
- * LUCENE-1427: Fixed QueryWrapperFilter to not waste time computing
- scores of the query, since they are just discarded. Also, made it
- more efficient (single pass) by not creating & populating an
- intermediate OpenBitSet (Paul Elschot, Mike McCandless)
-
- * LUCENE-1443: Performance improvement for OpenBitSetDISI.inPlaceAnd()
- (Paul Elschot via yonik)
-
- * LUCENE-1484: Remove synchronization of IndexReader.document() by
- using CloseableThreadLocal internally. (Jason Rutherglen via Mike
- McCandless).
-
- * LUCENE-1124: Short circuit FuzzyQuery.rewrite when input token length
- is small compared to minSimilarity. (Timo Nentwig, Mark Miller)
-
- * LUCENE-1316: MatchAllDocsQuery now avoids the synchronized
- IndexReader.isDeleted() call per document, by directly accessing
- the underlying deleteDocs BitVector. This improves performance
- with non-readOnly readers, especially in a multi-threaded
- environment. (Todd Feak, Yonik Seeley, Jason Rutherglen via Mike
- McCandless)
-
- * LUCENE-1483: When searching over multiple segments we now visit
- each sub-reader one at a time. This speeds up warming, since
- FieldCache entries (if required) can be shared across reopens for
- those segments that did not change, and also speeds up searches
- that sort by relevance or by field values. (Mark Miller, Mike
- McCandless)
-
- * LUCENE-1575: The new Collector class decouples collect() from
- score computation. Collector.setScorer is called to establish the
- current Scorer in-use per segment. Collectors that require the
- score should then call Scorer.score() per hit inside
- collect(). (Shai Erera via Mike McCandless)
-
- * LUCENE-1596: MultiTermDocs speedup when set with
- MultiTermDocs.seek(MultiTermEnum) (yonik)
-
- * LUCENE-1653: Avoid creating a Calendar in every call to
- DateTools#dateToString, DateTools#timeToString and
- DateTools#round. (Shai Erera via Mark Miller)
-
- * LUCENE-1688: Deprecate static final String stop word array and
- replace it with an immutable implementation of CharArraySet.
- Removes conversions between Set and array.
- (Simon Willnauer via Mark Miller)
-
- * LUCENE-1754: BooleanQuery.queryWeight.scorer() will return null if
- it won't match any documents (e.g. if there are no required and
- optional scorers, or not enough optional scorers to satisfy
- minShouldMatch). (Shai Erera via Mike McCandless)
-
- * LUCENE-1607: To speed up string interning for commonly used
- strings, the StringHelper.intern() interface was added with a
- default implementation that uses a lockless cache.
- (Earwin Burrfoot, yonik)
-
- * LUCENE-1800: QueryParser should use reusable TokenStreams. (yonik)
-
-
-Documentation
-
- * LUCENE-1908: Scoring documentation imrovements in Similarity javadocs.
- (Mark Miller, Shai Erera, Ted Dunning, Jiri Kuhn, Marvin Humphrey, Doron Cohen)
-
- * LUCENE-1872: NumericField javadoc improvements
- (Michael McCandless, Uwe Schindler)
-
- * LUCENE-1875: Make TokenStream.end javadoc less confusing.
- (Uwe Schindler)
-
- * LUCENE-1862: Rectified duplicate package level javadocs for
- o.a.l.queryParser and o.a.l.analysis.cn.
- (Chris Hostetter)
-
- * LUCENE-1886: Improved hyperlinking in key Analysis javadocs
- (Bernd Fondermann via Chris Hostetter)
-
- * LUCENE-1884: massive javadoc and comment cleanup, primarily dealing with
- typos.
- (Robert Muir via Chris Hostetter)
-
- * LUCENE-1898: Switch changes to use bullets rather than numbers and
- update changes-to-html script to handle the new format.
- (Steven Rowe, Mark Miller)
-
- * LUCENE-1900: Improve Searchable Javadoc.
- (Nadav Har'El, Doron Cohen, Marvin Humphrey, Mark Miller)
-
- * LUCENE-1896: Improve Similarity#queryNorm javadocs.
- (Jiri Kuhn, Mark Miller)
-
-Build
-
- * LUCENE-1440: Add new targets to build.xml that allow downloading
- and executing the junit testcases from an older release for
- backwards-compatibility testing. (Michael Busch)
-
- * LUCENE-1446: Add compatibility tag to common-build.xml and run
- backwards-compatibility tests in the nightly build. (Michael Busch)
-
- * LUCENE-1529: Properly test "drop-in" replacement of jar with
- backwards-compatibility tests. (Mike McCandless, Michael Busch)
-
- * LUCENE-1851: Change 'javacc' and 'clean-javacc' targets to build
- and clean contrib/surround files. (Luis Alves via Michael Busch)
-
- * LUCENE-1854: tar task should use longfile="gnu" to avoid false file
- name length warnings. (Mark Miller)
-
-Test Cases
-
- * LUCENE-1791: Enhancements to the QueryUtils and CheckHits utility
- classes to wrap IndexReaders and Searchers in MultiReaders or
- MultiSearcher when possible to help exercise more edge cases.
- (Chris Hostetter, Mark Miller)
-
- * LUCENE-1852: Fix localization test failures.
- (Robert Muir via Michael Busch)
-
- * LUCENE-1843: Refactored all tests that use assertAnalyzesTo() & others
- in core and contrib to use a new BaseTokenStreamTestCase
- base class. Also rewrote some tests to use this general analysis assert
- functions instead of own ones (e.g. TestMappingCharFilter).
- The new base class also tests tokenization with the TokenStream.next()
- backwards layer enabled (using Token/TokenWrapper as attribute
- implementation) and disabled (default for Lucene 3.0)
- (Uwe Schindler, Robert Muir)
-
- * LUCENE-1836: Added a new LocalizedTestCase as base class for localization
- junit tests. (Robert Muir, Uwe Schindler via Michael Busch)
-
-======================= Release 2.4.1 =======================
-
-API Changes
-
-1. LUCENE-1186: Add Analyzer.close() to free internal ThreadLocal
- resources. (Christian Kohlschütter via Mike McCandless)
-
-Bug fixes
-
-1. LUCENE-1452: Fixed silent data-loss case whereby binary fields are
- truncated to 0 bytes during merging if the segments being merged
- are non-congruent (same field name maps to different field
- numbers). This bug was introduced with LUCENE-1219. (Andrzej
- Bialecki via Mike McCandless).
-
-2. LUCENE-1429: Don't throw incorrect IllegalStateException from
- IndexWriter.close() if you've hit an OOM when autoCommit is true.
- (Mike McCandless)
-
-3. LUCENE-1474: If IndexReader.flush() is called twice when there were
- pending deletions, it could lead to later false AssertionError
- during IndexReader.open. (Mike McCandless)
-
-4. LUCENE-1430: Fix false AlreadyClosedException from IndexReader.open
- (masking an actual IOException) that takes String or File path.
- (Mike McCandless)
-
-5. LUCENE-1442: Multiple-valued NOT_ANALYZED fields can double-count
- token offsets. (Mike McCandless)
-
-6. LUCENE-1453: Ensure IndexReader.reopen()/clone() does not result in
- incorrectly closing the shared FSDirectory. This bug would only
- happen if you use IndexReader.open() with a File or String argument.
- The returned readers are wrapped by a FilterIndexReader that
- correctly handles closing of directory after reopen()/clone().
- (Mark Miller, Uwe Schindler, Mike McCandless)
-
-7. LUCENE-1457: Fix possible overflow bugs during binary
- searches. (Mark Miller via Mike McCandless)
-
-8. LUCENE-1459: Fix CachingWrapperFilter to not throw exception if
- both bits() and getDocIdSet() methods are called. (Matt Jones via
- Mike McCandless)
-
-9. LUCENE-1519: Fix int overflow bug during segment merging. (Deepak
- via Mike McCandless)
-
-10. LUCENE-1521: Fix int overflow bug when flushing segment.
- (Shon Vella via Mike McCandless).
-
-11. LUCENE-1544: Fix deadlock in IndexWriter.addIndexes(IndexReader[]).
- (Mike McCandless via Doug Sale)
-
-12. LUCENE-1547: Fix rare thread safety issue if two threads call
- IndexWriter commit() at the same time. (Mike McCandless)
-
-13. LUCENE-1465: NearSpansOrdered returns payloads from first possible match
- rather than the correct, shortest match; Payloads could be returned even
- if the max slop was exceeded; The wrong payload could be returned in
- certain situations. (Jonathan Mamou, Greg Shackles, Mark Miller)
-
-14. LUCENE-1186: Add Analyzer.close() to free internal ThreadLocal
- resources. (Christian Kohlschütter via Mike McCandless)
-
-15. LUCENE-1552: Fix IndexWriter.addIndexes(IndexReader[]) to properly
- rollback IndexWriter's internal state on hitting an
- exception. (Scott Garland via Mike McCandless)
-
-======================= Release 2.4.0 =======================
-
-Changes in backwards compatibility policy
-
-1. LUCENE-1340: In a minor change to Lucene's backward compatibility
- policy, we are now allowing the Fieldable interface to have
- changes, within reason, and made on a case-by-case basis. If an
- application implements it's own Fieldable, please be aware of
- this. Otherwise, no need to be concerned. This is in effect for
- all 2.X releases, starting with 2.4. Also note, that in all
- likelihood, Fieldable will be changed in 3.0.
-
-
-Changes in runtime behavior
-
- 1. LUCENE-1151: Fix StandardAnalyzer to not mis-identify host names
- (eg lucene.apache.org) as an ACRONYM. To get back to the pre-2.4
- backwards compatible, but buggy, behavior, you can either call
- StandardAnalyzer.setDefaultReplaceInvalidAcronym(false) (static
- method), or, set system property
- org.apache.lucene.analysis.standard.StandardAnalyzer.replaceInvalidAcronym
- to "false" on JVM startup. All StandardAnalyzer instances created
- after that will then show the pre-2.4 behavior. Alternatively,
- you can call setReplaceInvalidAcronym(false) to change the
- behavior per instance of StandardAnalyzer. This backwards
- compatibility will be removed in 3.0 (hardwiring the value to
- true). (Mike McCandless)
-
- 2. LUCENE-1044: IndexWriter with autoCommit=true now commits (such
- that a reader can see the changes) far less often than it used to.
- Previously, every flush was also a commit. You can always force a
- commit by calling IndexWriter.commit(). Furthermore, in 3.0,
- autoCommit will be hardwired to false (IndexWriter constructors
- that take an autoCommit argument have been deprecated) (Mike
- McCandless)
-
- 3. LUCENE-1335: IndexWriter.addIndexes(Directory[]) and
- addIndexesNoOptimize no longer allow the same Directory instance
- to be passed in more than once. Internally, IndexWriter uses
- Directory and segment name to uniquely identify segments, so
- adding the same Directory more than once was causing duplicates
- which led to problems (Mike McCandless)
-
- 4. LUCENE-1396: Improve PhraseQuery.toString() so that gaps in the
- positions are indicated with a ? and multiple terms at the same
- position are joined with a |. (Andrzej Bialecki via Mike
- McCandless)
-
-API Changes
-
- 1. LUCENE-1084: Changed all IndexWriter constructors to take an
- explicit parameter for maximum field size. Deprecated all the
- pre-existing constructors; these will be removed in release 3.0.
- NOTE: these new constructors set autoCommit to false. (Steven
- Rowe via Mike McCandless)
-
- 2. LUCENE-584: Changed Filter API to return a DocIdSet instead of a
- java.util.BitSet. This allows using more efficient data structures
- for Filters and makes them more flexible. This deprecates
- Filter.bits(), so all filters that implement this outside
- the Lucene code base will need to be adapted. See also the javadocs
- of the Filter class. (Paul Elschot, Michael Busch)
-
- 3. LUCENE-1044: Added IndexWriter.commit() which flushes any buffered
- adds/deletes and then commits a new segments file so readers will
- see the changes. Deprecate IndexWriter.flush() in favor of
- IndexWriter.commit(). (Mike McCandless)
-
- 4. LUCENE-325: Added IndexWriter.expungeDeletes methods, which
- consult the MergePolicy to find merges necessary to merge away all
- deletes from the index. This should be a somewhat lower cost
- operation than optimize. (John Wang via Mike McCandless)
-
- 5. LUCENE-1233: Return empty array instead of null when no fields
- match the specified name in these methods in Document:
- getFieldables, getFields, getValues, getBinaryValues. (Stefan
- Trcek vai Mike McCandless)
-
- 6. LUCENE-1234: Make BoostingSpanScorer protected. (Andi Vajda via Grant Ingersoll)
-
- 7. LUCENE-510: The index now stores strings as true UTF-8 bytes
- (previously it was Java's modified UTF-8). If any text, either
- stored fields or a token, has illegal UTF-16 surrogate characters,
- these characters are now silently replaced with the Unicode
- replacement character U+FFFD. This is a change to the index file
- format. (Marvin Humphrey via Mike McCandless)
-
- 8. LUCENE-852: Let the SpellChecker caller specify IndexWriter mergeFactor
- and RAM buffer size. (Otis Gospodnetic)
-
- 9. LUCENE-1290: Deprecate org.apache.lucene.search.Hits, Hit and HitIterator
- and remove all references to these classes from the core. Also update demos
- and tutorials. (Michael Busch)
-
-10. LUCENE-1288: Add getVersion() and getGeneration() to IndexCommit.
- getVersion() returns the same value that IndexReader.getVersion()
- returns when the reader is opened on the same commit. (Jason
- Rutherglen via Mike McCandless)
-
-11. LUCENE-1311: Added IndexReader.listCommits(Directory) static
- method to list all commits in a Directory, plus IndexReader.open
- methods that accept an IndexCommit and open the index as of that
- commit. These methods are only useful if you implement a custom
- DeletionPolicy that keeps more than the last commit around.
- (Jason Rutherglen via Mike McCandless)
-
-12. LUCENE-1325: Added IndexCommit.isOptimized(). (Shalin Shekhar
- Mangar via Mike McCandless)
-
-13. LUCENE-1324: Added TokenFilter.reset(). (Shai Erera via Mike
- McCandless)
-
-14. LUCENE-1340: Added Fieldable.omitTf() method to skip indexing term
- frequency, positions and payloads. This saves index space, and
- indexing/searching time. (Eks Dev via Mike McCandless)
-
-15. LUCENE-1219: Add basic reuse API to Fieldable for binary fields:
- getBinaryValue/Offset/Length(); currently only lazy fields reuse
- the provided byte[] result to getBinaryValue. (Eks Dev via Mike
- McCandless)
-
-16. LUCENE-1334: Add new constructor for Term: Term(String fieldName)
- which defaults term text to "". (DM Smith via Mike McCandless)
-
-17. LUCENE-1333: Added Token.reinit(*) APIs to re-initialize (reuse) a
- Token. Also added term() method to return a String, with a
- performance penalty clearly documented. Also implemented
- hashCode() and equals() in Token, and fixed all core and contrib
- analyzers to use the re-use APIs. (DM Smith via Mike McCandless)
-
-18. LUCENE-1329: Add optional readOnly boolean when opening an
- IndexReader. A readOnly reader is not allowed to make changes
- (deletions, norms) to the index; in exchanged, the isDeleted
- method, often a bottleneck when searching with many threads, is
- not synchronized. The default for readOnly is still false, but in
- 3.0 the default will become true. (Jason Rutherglen via Mike
- McCandless)
-
-19. LUCENE-1367: Add IndexCommit.isDeleted(). (Shalin Shekhar Mangar
- via Mike McCandless)
-
-20. LUCENE-1061: Factored out all "new XXXQuery(...)" in
- QueryParser.java into protected methods newXXXQuery(...) so that
- subclasses can create their own subclasses of each Query type.
- (John Wang via Mike McCandless)
-
-21. LUCENE-753: Added new Directory implementation
- org.apache.lucene.store.NIOFSDirectory, which uses java.nio's
- FileChannel to do file reads. On most non-Windows platforms, with
- many threads sharing a single searcher, this may yield sizable
- improvement to query throughput when compared to FSDirectory,
- which only allows a single thread to read from an open file at a
- time. (Jason Rutherglen via Mike McCandless)
-
-22. LUCENE-1371: Added convenience method TopDocs Searcher.search(Query query, int n).
- (Mike McCandless)
-
-23. LUCENE-1356: Allow easy extensions of TopDocCollector by turning
- constructor and fields from package to protected. (Shai Erera
- via Doron Cohen)
-
-24. LUCENE-1375: Added convenience method IndexCommit.getTimestamp,
- which is equivalent to
- getDirectory().fileModified(getSegmentsFileName()). (Mike McCandless)
-
-23. LUCENE-1366: Rename Field.Index options to be more accurate:
- TOKENIZED becomes ANALYZED; UN_TOKENIZED becomes NOT_ANALYZED;
- NO_NORMS becomes NOT_ANALYZED_NO_NORMS and a new ANALYZED_NO_NORMS
- is added. (Mike McCandless)
-
-24. LUCENE-1131: Added numDeletedDocs method to IndexReader (Otis Gospodnetic)
-
-Bug fixes
-
- 1. LUCENE-1134: Fixed BooleanQuery.rewrite to only optimize a single
- clause query if minNumShouldMatch<=0. (Shai Erera via Michael Busch)
-
- 2. LUCENE-1169: Fixed bug in IndexSearcher.search(): searching with
- a filter might miss some hits because scorer.skipTo() is called
- without checking if the scorer is already at the right position.
- scorer.skipTo(scorer.doc()) is not a NOOP, it behaves as
- scorer.next(). (Eks Dev, Michael Busch)
-
- 3. LUCENE-1182: Added scorePayload to SimilarityDelegator (Andi Vajda via Grant Ingersoll)
-
- 4. LUCENE-1213: MultiFieldQueryParser was ignoring slop in case
- of a single field phrase. (Trejkaz via Doron Cohen)
-
- 5. LUCENE-1228: IndexWriter.commit() was not updating the index version and as
- result IndexReader.reopen() failed to sense index changes. (Doron Cohen)
-
- 6. LUCENE-1267: Added numDocs() and maxDoc() to IndexWriter;
- deprecated docCount(). (Mike McCandless)
-
- 7. LUCENE-1274: Added new prepareCommit() method to IndexWriter,
- which does phase 1 of a 2-phase commit (commit() does phase 2).
- This is needed when you want to update an index as part of a
- transaction involving external resources (eg a database). Also
- deprecated abort(), renaming it to rollback(). (Mike McCandless)
-
- 8. LUCENE-1003: Stop RussianAnalyzer from removing numbers.
- (TUSUR OpenTeam, Dmitry Lihachev via Otis Gospodnetic)
-
- 9. LUCENE-1152: SpellChecker fix around clearIndex and indexDictionary
- methods, plus removal of IndexReader reference.
- (Naveen Belkale via Otis Gospodnetic)
-
-10. LUCENE-1046: Removed dead code in SpellChecker
- (Daniel Naber via Otis Gospodnetic)
-
-11. LUCENE-1189: Fixed the QueryParser to handle escaped characters within
- quoted terms correctly. (Tomer Gabel via Michael Busch)
-
-12. LUCENE-1299: Fixed NPE in SpellChecker when IndexReader is not null and field is (Grant Ingersoll)
-
-13. LUCENE-1303: Fixed BoostingTermQuery's explanation to be marked as a Match
- depending only upon the non-payload score part, regardless of the effect of
- the payload on the score. Prior to this, score of a query containing a BTQ
- differed from its explanation. (Doron Cohen)
-
-14. LUCENE-1310: Fixed SloppyPhraseScorer to work also for terms repeating more
- than twice in the query. (Doron Cohen)
-
-15. LUCENE-1351: ISOLatin1AccentFilter now cleans additional ligatures (Cedrik Lime via Grant Ingersoll)
-
-16. LUCENE-1383: Workaround a nasty "leak" in Java's builtin
- ThreadLocal, to prevent Lucene from causing unexpected
- OutOfMemoryError in certain situations (notably J2EE
- applications). (Chris Lu via Mike McCandless)
-
-New features
-
- 1. LUCENE-1137: Added Token.set/getFlags() accessors for passing more information about a Token through the analysis
- process. The flag is not indexed/stored and is thus only used by analysis.
-
- 2. LUCENE-1147: Add -segment option to CheckIndex tool so you can
- check only a specific segment or segments in your index. (Mike
- McCandless)
-
- 3. LUCENE-1045: Reopened this issue to add support for short and bytes.
-
- 4. LUCENE-584: Added new data structures to o.a.l.util, such as
- OpenBitSet and SortedVIntList. These extend DocIdSet and can
- directly be used for Filters with the new Filter API. Also changed
- the core Filters to use OpenBitSet instead of java.util.BitSet.
- (Paul Elschot, Michael Busch)
-
- 5. LUCENE-494: Added QueryAutoStopWordAnalyzer to allow for the automatic removal, from a query of frequently occurring terms.
- This Analyzer is not intended for use during indexing. (Mark Harwood via Grant Ingersoll)
-
- 6. LUCENE-1044: Change Lucene to properly "sync" files after
- committing, to ensure on a machine or OS crash or power cut, even
- with cached writes, the index remains consistent. Also added
- explicit commit() method to IndexWriter to force a commit without
- having to close. (Mike McCandless)
-
- 7. LUCENE-997: Add search timeout (partial) support.
- A TimeLimitedCollector was added to allow limiting search time.
- It is a partial solution since timeout is checked only when
- collecting a hit, and therefore a search for rare words in a
- huge index might not stop within the specified time.
- (Sean Timm via Doron Cohen)
-
- 8. LUCENE-1184: Allow SnapshotDeletionPolicy to be re-used across
- close/re-open of IndexWriter while still protecting an open
- snapshot (Tim Brennan via Mike McCandless)
-
- 9. LUCENE-1194: Added IndexWriter.deleteDocuments(Query) to delete
- documents matching the specified query. Also added static unlock
- and isLocked methods (deprecating the ones in IndexReader). (Mike
- McCandless)
-
-10. LUCENE-1201: Add IndexReader.getIndexCommit() method. (Tim Brennan
- via Mike McCandless)
-
-11. LUCENE-550: Added InstantiatedIndex implementation. Experimental
- Index store similar to MemoryIndex but allows for multiple documents
- in memory. (Karl Wettin via Grant Ingersoll)
-
-12. LUCENE-400: Added word based n-gram filter (in contrib/analyzers) called ShingleFilter and an Analyzer wrapper
- that wraps another Analyzer's token stream with a ShingleFilter (Sebastian Kirsch, Steve Rowe via Grant Ingersoll)
-
-13. LUCENE-1166: Decomposition tokenfilter for languages like German and Swedish (Thomas Peuss via Grant Ingersoll)
-
-14. LUCENE-1187: ChainedFilter and BooleanFilter now work with new Filter API
- and DocIdSetIterator-based filters. Backwards-compatibility with old
- BitSet-based filters is ensured. (Paul Elschot via Michael Busch)
-
-15. LUCENE-1295: Added new method to MoreLikeThis for retrieving interesting terms and made retrieveTerms(int) public. (Grant Ingersoll)
-
-16. LUCENE-1298: MoreLikeThis can now accept a custom Similarity (Grant Ingersoll)
-
-17. LUCENE-1297: Allow other string distance measures for the SpellChecker
- (Thomas Morton via Otis Gospodnetic)
-
-18. LUCENE-1001: Provide access to Payloads via Spans. All existing Span Query implementations in Lucene implement. (Mark Miller, Grant Ingersoll)
-
-19. LUCENE-1354: Provide programmatic access to CheckIndex (Grant Ingersoll, Mike McCandless)
-
-20. LUCENE-1279: Add support for Collators to RangeFilter/Query and Query Parser. (Steve Rowe via Grant Ingersoll)
-
-Optimizations
-
- 1. LUCENE-705: When building a compound file, use
- RandomAccessFile.setLength() to tell the OS/filesystem to
- pre-allocate space for the file. This may improve fragmentation
- in how the CFS file is stored, and allows us to detect an upcoming
- disk full situation before actually filling up the disk. (Mike
- McCandless)
-
- 2. LUCENE-1120: Speed up merging of term vectors by bulk-copying the
- raw bytes for each contiguous range of non-deleted documents.
- (Mike McCandless)
-
- 3. LUCENE-1185: Avoid checking if the TermBuffer 'scratch' in
- SegmentTermEnum is null for every call of scanTo().
- (Christian Kohlschuetter via Michael Busch)
-
- 4. LUCENE-1217: Internal to Field.java, use isBinary instead of
- runtime type checking for possible speedup of binaryValue().
- (Eks Dev via Mike McCandless)
-
- 5. LUCENE-1183: Optimized TRStringDistance class (in contrib/spell) that uses
- less memory than the previous version. (Cédrik LIME via Otis Gospodnetic)
-
- 6. LUCENE-1195: Improve term lookup performance by adding a LRU cache to the
- TermInfosReader. In performance experiments the speedup was about 25% on
- average on mid-size indexes with ~500,000 documents for queries with 3
- terms and about 7% on larger indexes with ~4.3M documents. (Michael Busch)
-
-Documentation
-
- 1. LUCENE-1236: Added some clarifying remarks to EdgeNGram*.java (Hiroaki Kawai via Grant Ingersoll)
-
- 2. LUCENE-1157 and LUCENE-1256: HTML changes log, created automatically
- from CHANGES.txt. This HTML file is currently visible only via developers page.
- (Steven Rowe via Doron Cohen)
-
- 3. LUCENE-1349: Fieldable can now be changed without breaking backward compatibility rules (within reason. See the note at
- the top of this file and also on Fieldable.java). (Grant Ingersoll)
-
- 4. LUCENE-1873: Update documentation to reflect current Contrib area status.
- (Steven Rowe, Mark Miller)
-
-Build
-
- 1. LUCENE-1153: Added JUnit JAR to new lib directory. Updated build to rely on local JUnit instead of ANT/lib.
-
- 2. LUCENE-1202: Small fixes to the way Clover is used to work better
- with contribs. Of particular note: a single clover db is used
- regardless of whether tests are run globally or in the specific
- contrib directories.
-
- 3. LUCENE-1353: Javacc target in contrib/miscellaneous for
- generating the precedence query parser.
-
-Test Cases
-
- 1. LUCENE-1238: Fixed intermittent failures of TestTimeLimitedCollector.testTimeoutMultiThreaded.
- Within this fix, "greedy" flag was added to TimeLimitedCollector, to allow the wrapped
- collector to collect also the last doc, after allowed-tTime passed. (Doron Cohen)
-
- 2. LUCENE-1348: relax TestTimeLimitedCollector to not fail due to
- timeout exceeded (just because test machine is very busy).
-
-======================= Release 2.3.2 =======================
-
-Bug fixes
-
- 1. LUCENE-1191: On hitting OutOfMemoryError in any index-modifying
- methods in IndexWriter, do not commit any further changes to the
- index to prevent risk of possible corruption. (Mike McCandless)
-
- 2. LUCENE-1197: Fixed issue whereby IndexWriter would flush by RAM
- too early when TermVectors were in use. (Mike McCandless)
-
- 3. LUCENE-1198: Don't corrupt index if an exception happens inside
- DocumentsWriter.init (Mike McCandless)
-
- 4. LUCENE-1199: Added defensive check for null indexReader before
- calling close in IndexModifier.close() (Mike McCandless)
-
- 5. LUCENE-1200: Fix rare deadlock case in addIndexes* when
- ConcurrentMergeScheduler is in use (Mike McCandless)
-
- 6. LUCENE-1208: Fix deadlock case on hitting an exception while
- processing a document that had triggered a flush (Mike McCandless)
-
- 7. LUCENE-1210: Fix deadlock case on hitting an exception while
- starting a merge when using ConcurrentMergeScheduler (Mike McCandless)
-
- 8. LUCENE-1222: Fix IndexWriter.doAfterFlush to always be called on
- flush (Mark Ferguson via Mike McCandless)
-
- 9. LUCENE-1226: Fixed IndexWriter.addIndexes(IndexReader[]) to commit
- successfully created compound files. (Michael Busch)
-
-10. LUCENE-1150: Re-expose StandardTokenizer's constants publicly;
- this was accidentally lost with LUCENE-966. (Nicolas Lalevée via
- Mike McCandless)
-
-11. LUCENE-1262: Fixed bug in BufferedIndexReader.refill whereby on
- hitting an exception in readInternal, the buffer is incorrectly
- filled with stale bytes such that subsequent calls to readByte()
- return incorrect results. (Trejkaz via Mike McCandless)
-
-12. LUCENE-1270: Fixed intermittent case where IndexWriter.close()
- would hang after IndexWriter.addIndexesNoOptimize had been
- called. (Stu Hood via Mike McCandless)
-
-Build
-
- 1. LUCENE-1230: Include *pom.xml* in source release files. (Michael Busch)
-
-
-======================= Release 2.3.1 =======================
-
-Bug fixes
-
- 1. LUCENE-1168: Fixed corruption cases when autoCommit=false and
- documents have mixed term vectors (Suresh Guvvala via Mike
- McCandless).
-
- 2. LUCENE-1171: Fixed some cases where OOM errors could cause
- deadlock in IndexWriter (Mike McCandless).
-
- 3. LUCENE-1173: Fixed corruption case when autoCommit=false and bulk
- merging of stored fields is used (Yonik via Mike McCandless).
-
- 4. LUCENE-1163: Fixed bug in CharArraySet.contains(char[] buffer, int
- offset, int len) that was ignoring offset and thus giving the
- wrong answer. (Thomas Peuss via Mike McCandless)
-
- 5. LUCENE-1177: Fix rare case where IndexWriter.optimize might do too
- many merges at the end. (Mike McCandless)
-
- 6. LUCENE-1176: Fix corruption case when documents with no term
- vector fields are added before documents with term vector fields.
- (Mike McCandless)
-
- 7. LUCENE-1179: Fixed assert statement that was incorrectly
- preventing Fields with empty-string field name from working.
- (Sergey Kabashnyuk via Mike McCandless)
-
-======================= Release 2.3.0 =======================
-
-Changes in runtime behavior
-
- 1. LUCENE-994: Defaults for IndexWriter have been changed to maximize
- out-of-the-box indexing speed. First, IndexWriter now flushes by
- RAM usage (16 MB by default) instead of a fixed doc count (call
- IndexWriter.setMaxBufferedDocs to get backwards compatible
- behavior). Second, ConcurrentMergeScheduler is used to run merges
- using background threads (call IndexWriter.setMergeScheduler(new
- SerialMergeScheduler()) to get backwards compatible behavior).
- Third, merges are chosen based on size in bytes of each segment
- rather than document count of each segment (call
- IndexWriter.setMergePolicy(new LogDocMergePolicy()) to get
- backwards compatible behavior).
-
- NOTE: users of ParallelReader must change back all of these
- defaults in order to ensure the docIDs "align" across all parallel
- indices.
-
- (Mike McCandless)
-
- 2. LUCENE-1045: SortField.AUTO didn't work with long. When detecting
- the field type for sorting automatically, numbers used to be
- interpreted as int, then as float, if parsing the number as an int
- failed. Now the detection checks for int, then for long,
- then for float. (Daniel Naber)
-
-API Changes
-
- 1. LUCENE-843: Added IndexWriter.setRAMBufferSizeMB(...) to have
- IndexWriter flush whenever the buffered documents are using more
- than the specified amount of RAM. Also added new APIs to Token
- that allow one to set a char[] plus offset and length to specify a
- token (to avoid creating a new String() for each Token). (Mike
- McCandless)
-
- 2. LUCENE-963: Add setters to Field to allow for re-using a single
- Field instance during indexing. This is a sizable performance
- gain, especially for small documents. (Mike McCandless)
-
- 3. LUCENE-969: Add new APIs to Token, TokenStream and Analyzer to
- permit re-using of Token and TokenStream instances during
- indexing. Changed Token to use a char[] as the store for the
- termText instead of String. This gives faster tokenization
- performance (~10-15%). (Mike McCandless)
-
- 4. LUCENE-847: Factored MergePolicy, which determines which merges
- should take place and when, as well as MergeScheduler, which
- determines when the selected merges should actually run, out of
- IndexWriter. The default merge policy is now
- LogByteSizeMergePolicy (see LUCENE-845) and the default merge
- scheduler is now ConcurrentMergeScheduler (see
- LUCENE-870). (Steven Parkes via Mike McCandless)
-
- 5. LUCENE-1052: Add IndexReader.setTermInfosIndexDivisor(int) method
- that allows you to reduce memory usage of the termInfos by further
- sub-sampling (over the termIndexInterval that was used during
- indexing) which terms are loaded into memory. (Chuck Williams,
- Doug Cutting via Mike McCandless)
-
- 6. LUCENE-743: Add IndexReader.reopen() method that re-opens an
- existing IndexReader (see New features -> 8.) (Michael Busch)
-
- 7. LUCENE-1062: Add setData(byte[] data),
- setData(byte[] data, int offset, int length), getData(), getOffset()
- and clone() methods to o.a.l.index.Payload. Also add the field name
- as arg to Similarity.scorePayload(). (Michael Busch)
-
- 8. LUCENE-982: Add IndexWriter.optimize(int maxNumSegments) method to
- "partially optimize" an index down to maxNumSegments segments.
- (Mike McCandless)
-
- 9. LUCENE-1080: Changed Token.DEFAULT_TYPE to be public.
-
-10. LUCENE-1064: Changed TopDocs constructor to be public.
- (Shai Erera via Michael Busch)
-
-11. LUCENE-1079: DocValues cleanup: constructor now has no params,
- and getInnerArray() now throws UnsupportedOperationException (Doron Cohen)
-
-12. LUCENE-1089: Added PriorityQueue.insertWithOverflow, which returns
- the Object (if any) that was bumped from the queue to allow
- re-use. (Shai Erera via Mike McCandless)
-
-13. LUCENE-1101: Token reuse 'contract' (defined LUCENE-969)
- modified so it is token producer's responsibility
- to call Token.clear(). (Doron Cohen)
-
-14. LUCENE-1118: Changed StandardAnalyzer to skip too-long (default >
- 255 characters) tokens. You can increase this limit by calling
- StandardAnalyzer.setMaxTokenLength(...). (Michael McCandless)
-
-
-Bug fixes
-
- 1. LUCENE-933: QueryParser fixed to not produce empty sub
- BooleanQueries "()" even if the Analyzer produced no
- tokens for input. (Doron Cohen)
-
- 2. LUCENE-955: Fixed SegmentTermPositions to work correctly with the
- first term in the dictionary. (Michael Busch)
-
- 3. LUCENE-951: Fixed NullPointerException in MultiLevelSkipListReader
- that was thrown after a call of TermPositions.seek().
- (Rich Johnson via Michael Busch)
-
- 4. LUCENE-938: Fixed cases where an unhandled exception in
- IndexWriter's methods could cause deletes to be lost.
- (Steven Parkes via Mike McCandless)
-
- 5. LUCENE-962: Fixed case where an unhandled exception in
- IndexWriter.addDocument or IndexWriter.updateDocument could cause
- unreferenced files in the index to not be deleted
- (Steven Parkes via Mike McCandless)
-
- 6. LUCENE-957: RAMDirectory fixed to properly handle directories
- larger than Integer.MAX_VALUE. (Doron Cohen)
-
- 7. LUCENE-781: MultiReader fixed to not throw NPE if isCurrent(),
- isOptimized() or getVersion() is called. Separated MultiReader
- into two classes: MultiSegmentReader extends IndexReader, is
- package-protected and is created automatically by IndexReader.open()
- in case the index has multiple segments. The public MultiReader
- now extends MultiSegmentReader and is intended to be used by users
- who want to add their own subreaders. (Daniel Naber, Michael Busch)
-
- 8. LUCENE-970: FilterIndexReader now implements isOptimized(). Before
- a call of isOptimized() would throw a NPE. (Michael Busch)
-
- 9. LUCENE-832: ParallelReader fixed to not throw NPE if isCurrent(),
- isOptimized() or getVersion() is called. (Michael Busch)
-
-10. LUCENE-948: Fix FNFE exception caused by stale NFS client
- directory listing caches when writers on different machines are
- sharing an index over NFS and using a custom deletion policy (Mike
- McCandless)
-
-11. LUCENE-978: Ensure TermInfosReader, FieldsReader, and FieldsReader
- close any streams they had opened if an exception is hit in the
- constructor. (Ning Li via Mike McCandless)
-
-12. LUCENE-985: If an extremely long term is in a doc (> 16383 chars),
- we now throw an IllegalArgumentException saying the term is too
- long, instead of cryptic ArrayIndexOutOfBoundsException. (Karl
- Wettin via Mike McCandless)
-
-13. LUCENE-991: The explain() method of BoostingTermQuery had errors
- when no payloads were present on a document. (Peter Keegan via
- Grant Ingersoll)
-
-14. LUCENE-992: Fixed IndexWriter.updateDocument to be atomic again
- (this was broken by LUCENE-843). (Ning Li via Mike McCandless)
-
-15. LUCENE-1008: Fixed corruption case when document with no term
- vector fields is added after documents with term vector fields.
- This bug was introduced with LUCENE-843. (Grant Ingersoll via
- Mike McCandless)
-
-16. LUCENE-1006: Fixed QueryParser to accept a "" field value (zero
- length quoted string.) (yonik)
-
-17. LUCENE-1010: Fixed corruption case when document with no term
- vector fields is added after documents with term vector fields.
- This case is hit during merge and would cause an EOFException.
- This bug was introduced with LUCENE-984. (Andi Vajda via Mike
- McCandless)
-
-19. LUCENE-1009: Fix merge slowdown with LogByteSizeMergePolicy when
- autoCommit=false and documents are using stored fields and/or term
- vectors. (Mark Miller via Mike McCandless)
-
-20. LUCENE-1011: Fixed corruption case when two or more machines,
- sharing an index over NFS, can be writers in quick succession.
- (Patrick Kimber via Mike McCandless)
-
-21. LUCENE-1028: Fixed Weight serialization for few queries:
- DisjunctionMaxQuery, ValueSourceQuery, CustomScoreQuery.
- Serialization check added for all queries.
- (Kyle Maxwell via Doron Cohen)
-
-22. LUCENE-1048: Fixed incorrect behavior in Lock.obtain(...) when the
- timeout argument is very large (eg Long.MAX_VALUE). Also added
- Lock.LOCK_OBTAIN_WAIT_FOREVER constant to never timeout. (Nikolay
- Diakov via Mike McCandless)
-
-23. LUCENE-1050: Throw LockReleaseFailedException in
- Simple/NativeFSLockFactory if we fail to delete the lock file when
- releasing the lock. (Nikolay Diakov via Mike McCandless)
-
-24. LUCENE-1071: Fixed SegmentMerger to correctly set payload bit in
- the merged segment. (Michael Busch)
-
-25. LUCENE-1042: Remove throwing of IOException in getTermFreqVector(int, String, TermVectorMapper) to be consistent
- with other getTermFreqVector calls. Also removed the throwing of the other IOException in that method to be consistent. (Karl Wettin via Grant Ingersoll)
-
-26. LUCENE-1096: Fixed Hits behavior when hits' docs are deleted
- along with iterating the hits. Deleting docs already retrieved
- now works seamlessly. If docs not yet retrieved are deleted
- (e.g. from another thread), and then, relying on the initial
- Hits.length(), an application attempts to retrieve more hits
- than actually exist , a ConcurrentMidificationException
- is thrown. (Doron Cohen)
-
-27. LUCENE-1068: Changed StandardTokenizer to fix an issue with it marking
- the type of some tokens incorrectly. This is done by adding a new flag named
- replaceInvalidAcronym which defaults to false, the current, incorrect behavior. Setting
- this flag to true fixes the problem. This flag is a temporary fix and is already
- marked as being deprecated. 3.x will implement the correct approach. (Shai Erera via Grant Ingersoll)
- LUCENE-1140: Fixed NPE caused by 1068 (Alexei Dets via Grant Ingersoll)
-
-28. LUCENE-749: ChainedFilter behavior fixed when logic of
- first filter is ANDNOT. (Antonio Bruno via Doron Cohen)
-
-29. LUCENE-508: Make sure SegmentTermEnum.prev() is accurate (= last
- term) after next() returns false. (Steven Tamm via Mike
- McCandless)
-
-
-New features
-
- 1. LUCENE-906: Elision filter for French.
- (Mathieu Lecarme via Otis Gospodnetic)
-
- 2. LUCENE-960: Added a SpanQueryFilter and related classes to allow for
- not only filtering, but knowing where in a Document a Filter matches
- (Grant Ingersoll)
-
- 3. LUCENE-868: Added new Term Vector access features. New callback
- mechanism allows application to define how and where to read Term
- Vectors from disk. This implementation contains several extensions
- of the new abstract TermVectorMapper class. The new API should be
- back-compatible. No changes in the actual storage of Term Vectors
- has taken place.
- 3.1 LUCENE-1038: Added setDocumentNumber() method to TermVectorMapper
- to provide information about what document is being accessed.
- (Karl Wettin via Grant Ingersoll)
-
- 4. LUCENE-975: Added PositionBasedTermVectorMapper that allows for
- position based lookup of term vector information.
- See item #3 above (LUCENE-868).
-
- 5. LUCENE-1011: Added simple tools (all in org.apache.lucene.store)
- to verify that locking is working properly. LockVerifyServer runs
- a separate server to verify locks. LockStressTest runs a simple
- tool that rapidly obtains and releases locks.
- VerifyingLockFactory is a LockFactory that wraps any other
- LockFactory and consults the LockVerifyServer whenever a lock is
- obtained or released, throwing an exception if an illegal lock
- obtain occurred. (Patrick Kimber via Mike McCandless)
-
- 6. LUCENE-1015: Added FieldCache extension (ExtendedFieldCache) to
- support doubles and longs. Added support into SortField for sorting
- on doubles and longs as well. (Grant Ingersoll)
-
- 7. LUCENE-1020: Created basic index checking & repair tool
- (o.a.l.index.CheckIndex). When run without -fix it does a
- detailed test of all segments in the index and reports summary
- information and any errors it hit. With -fix it will remove
- segments that had errors. (Mike McCandless)
-
- 8. LUCENE-743: Add IndexReader.reopen() method that re-opens an
- existing IndexReader by only loading those portions of an index
- that have changed since the reader was (re)opened. reopen() can
- be significantly faster than open(), depending on the amount of
- index changes. SegmentReader, MultiSegmentReader, MultiReader,
- and ParallelReader implement reopen(). (Michael Busch)
-
- 9. LUCENE-1040: CharArraySet useful for efficiently checking
- set membership of text specified by char[]. (yonik)
-
-10. LUCENE-1073: Created SnapshotDeletionPolicy to facilitate taking a
- live backup of an index without pausing indexing. (Mike
- McCandless)
-
-11. LUCENE-1019: CustomScoreQuery enhanced to support multiple
- ValueSource queries. (Kyle Maxwell via Doron Cohen)
-
-12. LUCENE-1095: Added an option to StopFilter to increase
- positionIncrement of the token succeeding a stopped token.
- Disabled by default. Similar option added to QueryParser
- to consider token positions when creating PhraseQuery
- and MultiPhraseQuery. Disabled by default (so by default
- the query parser ignores position increments).
- (Doron Cohen)
-
-13. LUCENE-1380: Added TokenFilter for setting position increment in special cases related to the ShingleFilter (Mck SembWever, Steve Rowe, Karl Wettin via Grant Ingersoll)
-
-
-
-Optimizations
-
- 1. LUCENE-937: CachingTokenFilter now uses an iterator to access the
- Tokens that are cached in the LinkedList. This increases performance
- significantly, especially when the number of Tokens is large.
- (Mark Miller via Michael Busch)
-
- 2. LUCENE-843: Substantial optimizations to improve how IndexWriter
- uses RAM for buffering documents and to speed up indexing (2X-8X
- faster). A single shared hash table now records the in-memory
- postings per unique term and is directly flushed into a single
- segment. (Mike McCandless)
-
- 3. LUCENE-892: Fixed extra "buffer to buffer copy" that sometimes
- takes place when using compound files. (Mike McCandless)
-
- 4. LUCENE-959: Remove synchronization in Document (yonik)
-
- 5. LUCENE-963: Add setters to Field to allow for re-using a single
- Field instance during indexing. This is a sizable performance
- gain, especially for small documents. (Mike McCandless)
-
- 6. LUCENE-939: Check explicitly for boundary conditions in FieldInfos
- and don't rely on exceptions. (Michael Busch)
-
- 7. LUCENE-966: Very substantial speedups (~6X faster) for
- StandardTokenizer (StandardAnalyzer) by using JFlex instead of
- JavaCC to generate the tokenizer.
- (Stanislaw Osinski via Mike McCandless)
-
- 8. LUCENE-969: Changed core tokenizers & filters to re-use Token and
- TokenStream instances when possible to improve tokenization
- performance (~10-15%). (Mike McCandless)
-
- 9. LUCENE-871: Speedup ISOLatin1AccentFilter (Ian Boston via Mike
- McCandless)
-
-10. LUCENE-986: Refactored SegmentInfos from IndexReader into the new
- subclass DirectoryIndexReader. SegmentReader and MultiSegmentReader
- now extend DirectoryIndexReader and are the only IndexReader
- implementations that use SegmentInfos to access an index and
- acquire a write lock for index modifications. (Michael Busch)
-
-11. LUCENE-1007: Allow flushing in IndexWriter to be triggered by
- either RAM usage or document count or both (whichever comes
- first), by adding symbolic constant DISABLE_AUTO_FLUSH to disable
- one of the flush triggers. (Ning Li via Mike McCandless)
-
-12. LUCENE-1043: Speed up merging of stored fields by bulk-copying the
- raw bytes for each contiguous range of non-deleted documents.
- (Robert Engels via Mike McCandless)
-
-13. LUCENE-693: Speed up nested conjunctions (~2x) that match many
- documents, and a slight performance increase for top level
- conjunctions. (yonik)
-
-14. LUCENE-1098: Make inner class StandardAnalyzer.SavedStreams static
- and final. (Nathan Beyer via Michael Busch)
-
-Documentation
-
- 1. LUCENE-1051: Generate separate javadocs for core, demo and contrib
- classes, as well as an unified view. Also add an appropriate menu
- structure to the website. (Michael Busch)
-
- 2. LUCENE-746: Fix error message in AnalyzingQueryParser.getPrefixQuery.
- (Ronnie Kolehmainen via Michael Busch)
-
-Build
-
- 1. LUCENE-908: Improvements and simplifications for how the MANIFEST
- file and the META-INF dir are created. (Michael Busch)
-
- 2. LUCENE-935: Various improvements for the maven artifacts. Now the
- artifacts also include the sources as .jar files. (Michael Busch)
-
- 3. Added apply-patch target to top-level build. Defaults to looking for
- a patch in ${basedir}/../patches with name specified by -Dpatch.name.
- Can also specify any location by -Dpatch.file property on the command
- line. This should be helpful for easy application of patches, but it
- is also a step towards integrating automatic patch application with
- JIRA and Hudson, and is thus subject to change. (Grant Ingersoll)
-
- 4. LUCENE-935: Defined property "m2.repository.url" to allow setting
- the url to a maven remote repository to deploy to. (Michael Busch)
-
- 5. LUCENE-1051: Include javadocs in the maven artifacts. (Michael Busch)
-
- 6. LUCENE-1055: Remove gdata-server from build files and its sources
- from trunk. (Michael Busch)
-
- 7. LUCENE-935: Allow to deploy maven artifacts to a remote m2 repository
- via scp and ssh authentication. (Michael Busch)
-
- 8. LUCENE-1123: Allow overriding the specification version for
- MANIFEST.MF (Michael Busch)
-
-Test Cases
-
- 1. LUCENE-766: Test adding two fields with the same name but different
- term vector setting. (Nicolas Lalevée via Doron Cohen)
-
-======================= Release 2.2.0 =======================
-
-Changes in runtime behavior
-
-API Changes
-
- 1. LUCENE-793: created new exceptions and added them to throws clause
- for many methods (all subclasses of IOException for backwards
- compatibility): index.StaleReaderException,
- index.CorruptIndexException, store.LockObtainFailedException.
- This was done to better call out the possible root causes of an
- IOException from these methods. (Mike McCandless)
-
- 2. LUCENE-811: make SegmentInfos class, plus a few methods from related
- classes, package-private again (they were unnecessarily made public
- as part of LUCENE-701). (Mike McCandless)
-
- 3. LUCENE-710: added optional autoCommit boolean to IndexWriter
- constructors. When this is false, index changes are not committed
- until the writer is closed. This gives explicit control over when
- a reader will see the changes. Also added optional custom
- deletion policy to explicitly control when prior commits are
- removed from the index. This is intended to allow applications to
- share an index over NFS by customizing when prior commits are
- deleted. (Mike McCandless)
-
- 4. LUCENE-818: changed most public methods of IndexWriter,
- IndexReader (and its subclasses), FieldsReader and RAMDirectory to
- throw AlreadyClosedException if they are accessed after being
- closed. (Mike McCandless)
-
- 5. LUCENE-834: Changed some access levels for certain Span classes to allow them
- to be overridden. They have been marked expert only and not for public
- consumption. (Grant Ingersoll)
-
- 6. LUCENE-796: Removed calls to super.* from various get*Query methods in
- MultiFieldQueryParser, in order to allow sub-classes to override them.
- (Steven Parkes via Otis Gospodnetic)
-
- 7. LUCENE-857: Removed caching from QueryFilter and deprecated QueryFilter
- in favour of QueryWrapperFilter or QueryWrapperFilter + CachingWrapperFilter
- combination when caching is desired.
- (Chris Hostetter, Otis Gospodnetic)
-
- 8. LUCENE-869: Changed FSIndexInput and FSIndexOutput to inner classes of FSDirectory
- to enable extensibility of these classes. (Michael Busch)
-
- 9. LUCENE-580: Added the public method reset() to TokenStream. This method does
- nothing by default, but may be overwritten by subclasses to support consuming
- the TokenStream more than once. (Michael Busch)
-
-10. LUCENE-580: Added a new constructor to Field that takes a TokenStream as
- argument, available as tokenStreamValue(). This is useful to avoid the need of
- "dummy analyzers" for pre-analyzed fields. (Karl Wettin, Michael Busch)
-
-11. LUCENE-730: Added the new methods to BooleanQuery setAllowDocsOutOfOrder() and
- getAllowDocsOutOfOrder(). Deprecated the methods setUseScorer14() and
- getUseScorer14(). The optimization patch LUCENE-730 (see Optimizations->3.)
- improves performance for certain queries but results in scoring out of docid
- order. This patch reverse this change, so now by default hit docs are scored
- in docid order if not setAllowDocsOutOfOrder(true) is explicitly called.
- This patch also enables the tests in QueryUtils again that check for docid
- order. (Paul Elschot, Doron Cohen, Michael Busch)
-
-12. LUCENE-888: Added Directory.openInput(File path, int bufferSize)
- to optionally specify the size of the read buffer. Also added
- BufferedIndexInput.setBufferSize(int) to change the buffer size.
- (Mike McCandless)
-
-13. LUCENE-923: Make SegmentTermPositionVector package-private. It does not need
- to be public because it implements the public interface TermPositionVector.
- (Michael Busch)
-
-Bug fixes
-
- 1. LUCENE-804: Fixed build.xml to pack a fully compilable src dist. (Doron Cohen)
-
- 2. LUCENE-813: Leading wildcard fixed to work with trailing wildcard.
- Query parser modified to create a prefix query only for the case
- that there is a single trailing wildcard (and no additional wildcard
- or '?' in the query text). (Doron Cohen)
-
- 3. LUCENE-812: Add no-argument constructors to NativeFSLockFactory
- and SimpleFSLockFactory. This enables all 4 builtin LockFactory
- implementations to be specified via the System property
- org.apache.lucene.store.FSDirectoryLockFactoryClass. (Mike McCandless)
-
- 4. LUCENE-821: The new single-norm-file introduced by LUCENE-756
- failed to reduce the number of open descriptors since it was still
- opened once per field with norms. (yonik)
-
- 5. LUCENE-823: Make sure internal file handles are closed when
- hitting an exception (eg disk full) while flushing deletes in
- IndexWriter's mergeSegments, and also during
- IndexWriter.addIndexes. (Mike McCandless)
-
- 6. LUCENE-825: If directory is removed after
- FSDirectory.getDirectory() but before IndexReader.open you now get
- a FileNotFoundException like Lucene pre-2.1 (before this fix you
- got an NPE). (Mike McCandless)
-
- 7. LUCENE-800: Removed backslash from the TERM_CHAR list in the queryparser,
- because the backslash is the escape character. Also changed the ESCAPED_CHAR
- list to contain all possible characters, because every character that
- follows a backslash should be considered as escaped. (Michael Busch)
-
- 8. LUCENE-372: QueryParser.parse() now ensures that the entire input string
- is consumed. Now a ParseException is thrown if a query contains too many
- closing parentheses. (Andreas Neumann via Michael Busch)
-
- 9. LUCENE-814: javacc build targets now fix line-end-style of generated files.
- Now also deleting all javacc generated files before calling javacc.
- (Steven Parkes, Doron Cohen)
-
-10. LUCENE-829: close readers in contrib/benchmark. (Karl Wettin, Doron Cohen)
-
-11. LUCENE-828: Minor fix for Term's equal().
- (Paul Cowan via Otis Gospodnetic)
-
-12. LUCENE-846: Fixed: if IndexWriter is opened with autoCommit=false,
- and you call addIndexes, and hit an exception (eg disk full) then
- when IndexWriter rolls back its internal state this could corrupt
- the instance of IndexWriter (but, not the index itself) by
- referencing already deleted segments. This bug was only present
- in 2.2 (trunk), ie was never released. (Mike McCandless)
-
-13. LUCENE-736: Sloppy phrase query with repeating terms matches wrong docs.
- For example query "B C B"~2 matches the doc "A B C D E". (Doron Cohen)
-
-14. LUCENE-789: Fixed: custom similarity is ignored when using MultiSearcher (problem reported
- by Alexey Lef). Now the similarity applied by MultiSearcer.setSimilarity(sim) is being used.
- Note that as before this fix, creating a multiSearcher from Searchers for whom custom similarity
- was set has no effect - it is masked by the similarity of the MultiSearcher. This is as
- designed, because MultiSearcher operates on Searchables (not Searchers). (Doron Cohen)
-
-15. LUCENE-880: Fixed DocumentWriter to close the TokenStreams after it
- has written the postings. Then the resources associated with the
- TokenStreams can safely be released. (Michael Busch)
-
-16. LUCENE-883: consecutive calls to Spellchecker.indexDictionary()
- won't insert terms twice anymore. (Daniel Naber)
-
-17. LUCENE-881: QueryParser.escape() now also escapes the characters
- '|' and '&' which are part of the queryparser syntax. (Michael Busch)
-
-18. LUCENE-886: Spellchecker clean up: exceptions aren't printed to STDERR
- anymore and ignored, but re-thrown. Some javadoc improvements.
- (Daniel Naber)
-
-19. LUCENE-698: FilteredQuery now takes the query boost into account for
- scoring. (Michael Busch)
-
-20. LUCENE-763: Spellchecker: LuceneDictionary used to skip first word in
- enumeration. (Christian Mallwitz via Daniel Naber)
-
-21. LUCENE-903: FilteredQuery explanation inaccuracy with boost.
- Explanation tests now "deep" check the explanation details.
- (Chris Hostetter, Doron Cohen)
-
-22. LUCENE-912: DisjunctionMaxScorer first skipTo(target) call ignores the
- skip target param and ends up at the first match.
- (Sudaakeran B. via Chris Hostetter & Doron Cohen)
-
-23. LUCENE-913: Two consecutive score() calls return different
- scores for Boolean Queries. (Michael Busch, Doron Cohen)
-
-24. LUCENE-1013: Fix IndexWriter.setMaxMergeDocs to work "out of the
- box", again, by moving set/getMaxMergeDocs up from
- LogDocMergePolicy into LogMergePolicy. This fixes the API
- breakage (non backwards compatible change) caused by LUCENE-994.
- (Yonik Seeley via Mike McCandless)
-
-New features
-
- 1. LUCENE-759: Added two n-gram-producing TokenFilters.
- (Otis Gospodnetic)
-
- 2. LUCENE-822: Added FieldSelector capabilities to Searchable for use with
- RemoteSearcher, and other Searchable implementations. (Mark Miller, Grant Ingersoll)
-
- 3. LUCENE-755: Added the ability to store arbitrary binary metadata in the posting list.
- These metadata are called Payloads. For every position of a Token one Payload in the form
- of a variable length byte array can be stored in the prox file.
- Remark: The APIs introduced with this feature are in experimental state and thus
- contain appropriate warnings in the javadocs.
- (Michael Busch)
-
- 4. LUCENE-834: Added BoostingTermQuery which can boost scores based on the
- values of a payload (see #3 above.) (Grant Ingersoll)
-
- 5. LUCENE-834: Similarity has a new method for scoring payloads called
- scorePayloads that can be overridden to take advantage of payload
- storage (see #3 above)
-
- 6. LUCENE-834: Added isPayloadAvailable() onto TermPositions interface and
- implemented it in the appropriate places (Grant Ingersoll)
-
- 7. LUCENE-853: Added RemoteCachingWrapperFilter to enable caching of Filters
- on the remote side of the RMI connection.
- (Matt Ericson via Otis Gospodnetic)
-
- 8. LUCENE-446: Added Solr's search.function for scores based on field
- values, plus CustomScoreQuery for simple score (post) customization.
- (Yonik Seeley, Doron Cohen)
-
- 9. LUCENE-1058: Added new TeeTokenFilter (like the UNIX 'tee' command) and SinkTokenizer which can be used to share tokens between two or more
- Fields such that the other Fields do not have to go through the whole Analysis process over again. For instance, if you have two
- Fields that share all the same analysis steps except one lowercases tokens and the other does not, you can coordinate the operations
- between the two using the TeeTokenFilter and the SinkTokenizer. See TeeSinkTokenTest.java for examples.
- (Grant Ingersoll, Michael Busch, Yonik Seeley)
-
-Optimizations
-
- 1. LUCENE-761: The proxStream is now cloned lazily in SegmentTermPositions
- when nextPosition() is called for the first time. This allows using instances
- of SegmentTermPositions instead of SegmentTermDocs without additional costs.
- (Michael Busch)
-
- 2. LUCENE-431: RAMInputStream and RAMOutputStream extend IndexInput and
- IndexOutput directly now. This avoids further buffering and thus avoids
- unnecessary array copies. (Michael Busch)
-
- 3. LUCENE-730: Updated BooleanScorer2 to make use of BooleanScorer in some
- cases and possibly improve scoring performance. Documents can now be
- delivered out-of-order as they are scored (e.g. to HitCollector).
- N.B. A bit of code had to be disabled in QueryUtils in order for
- TestBoolean2 test to keep passing.
- (Paul Elschot via Otis Gospodnetic)
-
- 4. LUCENE-882: Spellchecker doesn't store the ngrams anymore but only indexes
- them to keep the spell index small. (Daniel Naber)
-
- 5. LUCENE-430: Delay allocation of the buffer after a clone of BufferedIndexInput.
- Together with LUCENE-888 this will allow to adjust the buffer size
- dynamically. (Paul Elschot, Michael Busch)
-
- 6. LUCENE-888: Increase buffer sizes inside CompoundFileWriter and
- BufferedIndexOutput. Also increase buffer size in
- BufferedIndexInput, but only when used during merging. Together,
- these increases yield 10-18% overall performance gain vs the
- previous 1K defaults. (Mike McCandless)
-
- 7. LUCENE-866: Adds multi-level skip lists to the posting lists. This speeds
- up most queries that use skipTo(), especially on big indexes with large posting
- lists. For average AND queries the speedup is about 20%, for queries that
- contain very frequent and very unique terms the speedup can be over 80%.
- (Michael Busch)
-
-Documentation
-
- 1. LUCENE 791 && INFRA-1173: Infrastructure moved the Wiki to
- http://wiki.apache.org/lucene-java/ Updated the links in the docs and
- wherever else I found references. (Grant Ingersoll, Joe Schaefer)
-
- 2. LUCENE-807: Fixed the javadoc for ScoreDocComparator.compare() to be
- consistent with java.util.Comparator.compare(): Any integer is allowed to
- be returned instead of only -1/0/1.
- (Paul Cowan via Michael Busch)
-
- 3. LUCENE-875: Solved javadoc warnings & errors under jdk1.4.
- Solved javadoc errors under jdk5 (jars in path for gdata).
- Made "javadocs" target depend on "build-contrib" for first downloading
- contrib jars configured for dynamic downloaded. (Note: when running
- behind firewall, a firewall prompt might pop up) (Doron Cohen)
-
- 4. LUCENE-740: Added SNOWBALL-LICENSE.txt to the snowball package and a
- remark about the license to NOTICE.TXT. (Steven Parkes via Michael Busch)
-
- 5. LUCENE-925: Added analysis package javadocs. (Grant Ingersoll and Doron Cohen)
-
- 6. LUCENE-926: Added document package javadocs. (Grant Ingersoll)
-
-Build
-
- 1. LUCENE-802: Added LICENSE.TXT and NOTICE.TXT to Lucene jars.
- (Steven Parkes via Michael Busch)
-
- 2. LUCENE-885: "ant test" now includes all contrib tests. The new
- "ant test-core" target can be used to run only the Core (non
- contrib) tests.
- (Chris Hostetter)
-
- 3. LUCENE-900: "ant test" now enables Java assertions (in Lucene packages).
- (Doron Cohen)
-
- 4. LUCENE-894: Add custom build file for binary distributions that includes
- targets to build the demos. (Chris Hostetter, Michael Busch)
-
- 5. LUCENE-904: The "package" targets in build.xml now also generate .md5
- checksum files. (Chris Hostetter, Michael Busch)
-
- 6. LUCENE-907: Include LICENSE.TXT and NOTICE.TXT in the META-INF dirs of
- demo war, demo jar, and the contrib jars. (Michael Busch)
-
- 7. LUCENE-909: Demo targets for running the demo. (Doron Cohen)
-
- 8. LUCENE-908: Improves content of MANIFEST file and makes it customizable
- for the contribs. Adds SNOWBALL-LICENSE.txt to META-INF of the snowball
- jar and makes sure that the lucli jar contains LICENSE.txt and NOTICE.txt.
- (Chris Hostetter, Michael Busch)
-
- 9. LUCENE-930: Various contrib building improvements to ensure contrib
- dependencies are met, and test compilation errors fail the build.
- (Steven Parkes, Chris Hostetter)
-
-10. LUCENE-622: Add ant target and pom.xml files for building maven artifacts
- of the Lucene core and the contrib modules.
- (Sami Siren, Karl Wettin, Michael Busch)
-
-======================= Release 2.1.0 =======================
-
-Changes in runtime behavior
-
- 1. 's' and 't' have been removed from the list of default stopwords
- in StopAnalyzer (also used in by StandardAnalyzer). Having e.g. 's'
- as a stopword meant that 's-class' led to the same results as 'class'.
- Note that this problem still exists for 'a', e.g. in 'a-class' as
- 'a' continues to be a stopword.
- (Daniel Naber)
-
- 2. LUCENE-478: Updated the list of Unicode code point ranges for CJK
- (now split into CJ and K) in StandardAnalyzer. (John Wang and
- Steven Rowe via Otis Gospodnetic)
-
- 3. Modified some CJK Unicode code point ranges in StandardTokenizer.jj,
- and added a few more of them to increase CJK character coverage.
- Also documented some of the ranges.
- (Otis Gospodnetic)
-
- 4. LUCENE-489: Add support for leading wildcard characters (*, ?) to
- QueryParser. Default is to disallow them, as before.
- (Steven Parkes via Otis Gospodnetic)
-
- 5. LUCENE-703: QueryParser changed to default to use of ConstantScoreRangeQuery
- for range queries. Added useOldRangeQuery property to QueryParser to allow
- selection of old RangeQuery class if required.
- (Mark Harwood)
-
- 6. LUCENE-543: WildcardQuery now performs a TermQuery if the provided term
- does not contain a wildcard character (? or *), when previously a
- StringIndexOutOfBoundsException was thrown.
- (Michael Busch via Erik Hatcher)
-
- 7. LUCENE-726: Removed the use of deprecated doc.fields() method and
- Enumeration.
- (Michael Busch via Otis Gospodnetic)
-
- 8. LUCENE-436: Removed finalize() in TermInfosReader and SegmentReader,
- and added a call to enumerators.remove() in TermInfosReader.close().
- The finalize() overrides were added to help with a pre-1.4.2 JVM bug
- that has since been fixed, plus we no longer support pre-1.4.2 JVMs.
- (Otis Gospodnetic)
-
- 9. LUCENE-771: The default location of the write lock is now the
- index directory, and is named simply "write.lock" (without a big
- digest prefix). The system properties "org.apache.lucene.lockDir"
- nor "java.io.tmpdir" are no longer used as the global directory
- for storing lock files, and the LOCK_DIR field of FSDirectory is
- now deprecated. (Mike McCandless)
-
-New features
-
- 1. LUCENE-503: New ThaiAnalyzer and ThaiWordFilter in contrib/analyzers
- (Samphan Raruenrom via Chris Hostetter)
-
- 2. LUCENE-545: New FieldSelector API and associated changes to
- IndexReader and implementations. New Fieldable interface for use
- with the lazy field loading mechanism. (Grant Ingersoll and Chuck
- Williams via Grant Ingersoll)
-
- 3. LUCENE-676: Move Solr's PrefixFilter to Lucene core. (Yura
- Smolsky, Yonik Seeley)
-
- 4. LUCENE-678: Added NativeFSLockFactory, which implements locking
- using OS native locking (via java.nio.*). (Michael McCandless via
- Yonik Seeley)
-
- 5. LUCENE-544: Added the ability to specify different boosts for
- different fields when using MultiFieldQueryParser (Matt Ericson
- via Otis Gospodnetic)
-
- 6. LUCENE-528: New IndexWriter.addIndexesNoOptimize() that doesn't
- optimize the index when adding new segments, only performing
- merges as needed. (Ning Li via Yonik Seeley)
-
- 7. LUCENE-573: QueryParser now allows backslash escaping in
- quoted terms and phrases. (Michael Busch via Yonik Seeley)
-
- 8. LUCENE-716: QueryParser now allows specification of Unicode
- characters in terms via a unicode escape of the form \uXXXX
- (Michael Busch via Yonik Seeley)
-
- 9. LUCENE-709: Added RAMDirectory.sizeInBytes(), IndexWriter.ramSizeInBytes()
- and IndexWriter.flushRamSegments(), allowing applications to
- control the amount of memory used to buffer documents.
- (Chuck Williams via Yonik Seeley)
-
-10. LUCENE-723: QueryParser now parses *:* as MatchAllDocsQuery
- (Yonik Seeley)
-
-11. LUCENE-741: Command-line utility for modifying or removing norms
- on fields in an existing index. This is mostly based on LUCENE-496
- and lives in contrib/miscellaneous.
- (Chris Hostetter, Otis Gospodnetic)
-
-12. LUCENE-759: Added NGramTokenizer and EdgeNGramTokenizer classes and
- their passing unit tests.
- (Otis Gospodnetic)
-
-13. LUCENE-565: Added methods to IndexWriter to more efficiently
- handle updating documents (the "delete then add" use case). This
- is intended to be an eventual replacement for the existing
- IndexModifier. Added IndexWriter.flush() (renamed from
- flushRamSegments()) to flush all pending updates (held in RAM), to
- the Directory. (Ning Li via Mike McCandless)
-
-14. LUCENE-762: Added in SIZE and SIZE_AND_BREAK FieldSelectorResult options
- which allow one to retrieve the size of a field without retrieving the
- actual field. (Chuck Williams via Grant Ingersoll)
-
-15. LUCENE-799: Properly handle lazy, compressed fields.
- (Mike Klaas via Grant Ingersoll)
-
-API Changes
-
- 1. LUCENE-438: Remove "final" from Token, implement Cloneable, allow
- changing of termText via setTermText(). (Yonik Seeley)
-
- 2. org.apache.lucene.analysis.nl.WordlistLoader has been deprecated
- and is supposed to be replaced with the WordlistLoader class in
- package org.apache.lucene.analysis (Daniel Naber)
-
- 3. LUCENE-609: Revert return type of Document.getField(s) to Field
- for backward compatibility, added new Document.getFieldable(s)
- for access to new lazy loaded fields. (Yonik Seeley)
-
- 4. LUCENE-608: Document.fields() has been deprecated and a new method
- Document.getFields() has been added that returns a List instead of
- an Enumeration (Daniel Naber)
-
- 5. LUCENE-605: New Explanation.isMatch() method and new ComplexExplanation
- subclass allows explain methods to produce Explanations which model
- "matching" independent of having a positive value.
- (Chris Hostetter)
-
- 6. LUCENE-621: New static methods IndexWriter.setDefaultWriteLockTimeout
- and IndexWriter.setDefaultCommitLockTimeout for overriding default
- timeout values for all future instances of IndexWriter (as well
- as for any other classes that may reference the static values,
- ie: IndexReader).
- (Michael McCandless via Chris Hostetter)
-
- 7. LUCENE-638: FSDirectory.list() now only returns the directory's
- Lucene-related files. Thanks to this change one can now construct
- a RAMDirectory from a file system directory that contains files
- not related to Lucene.
- (Simon Willnauer via Daniel Naber)
-
- 8. LUCENE-635: Decoupling locking implementation from Directory
- implementation. Added set/getLockFactory to Directory and moved
- all locking code into subclasses of abstract class LockFactory.
- FSDirectory and RAMDirectory still default to their prior locking
- implementations, but now you can mix & match, for example using
- SingleInstanceLockFactory (ie, in memory locking) locking with an
- FSDirectory. Note that now you must call setDisableLocks before
- the instantiation a FSDirectory if you wish to disable locking
- for that Directory.
- (Michael McCandless, Jeff Patterson via Yonik Seeley)
-
- 9. LUCENE-657: Made FuzzyQuery non-final and inner ScoreTerm protected.
- (Steven Parkes via Otis Gospodnetic)
-
-10. LUCENE-701: Lockless commits: a commit lock is no longer required
- when a writer commits and a reader opens the index. This includes
- a change to the index file format (see docs/fileformats.html for
- details). It also removes all APIs associated with the commit
- lock & its timeout. Readers are now truly read-only and do not
- block one another on startup. This is the first step to getting
- Lucene to work correctly over NFS (second step is
- LUCENE-710). (Mike McCandless)
-
-11. LUCENE-722: DEFAULT_MIN_DOC_FREQ was misspelled DEFALT_MIN_DOC_FREQ
- in Similarity's MoreLikeThis class. The misspelling has been
- replaced by the correct spelling.
- (Andi Vajda via Daniel Naber)
-
-12. LUCENE-738: Reduce the size of the file that keeps track of which
- documents are deleted when the number of deleted documents is
- small. This changes the index file format and cannot be
- read by previous versions of Lucene. (Doron Cohen via Yonik Seeley)
-
-13. LUCENE-756: Maintain all norms in a single .nrm file to reduce the
- number of open files and file descriptors for the non-compound index
- format. This changes the index file format, but maintains the
- ability to read and update older indices. The first segment merge
- on an older format index will create a single .nrm file for the new
- segment. (Doron Cohen via Yonik Seeley)
-
-14. LUCENE-732: DateTools support has been added to QueryParser, with
- setters for both the default Resolution, and per-field Resolution.
- For backwards compatibility, DateField is still used if no Resolutions
- are specified. (Michael Busch via Chris Hostetter)
-
-15. Added isOptimized() method to IndexReader.
- (Otis Gospodnetic)
-
-16. LUCENE-773: Deprecate the FSDirectory.getDirectory(*) methods that
- take a boolean "create" argument. Instead you should use
- IndexWriter's "create" argument to create a new index.
- (Mike McCandless)
-
-17. LUCENE-780: Add a static Directory.copy() method to copy files
- from one Directory to another. (Jiri Kuhn via Mike McCandless)
-
-18. LUCENE-773: Added Directory.clearLock(String name) to forcefully
- remove an old lock. The default implementation is to ask the
- lockFactory (if non null) to clear the lock. (Mike McCandless)
-
-19. LUCENE-795: Directory.renameFile() has been deprecated as it is
- not used anymore inside Lucene. (Daniel Naber)
-
-Bug fixes
-
- 1. Fixed the web application demo (built with "ant war-demo") which
- didn't work because it used a QueryParser method that had
- been removed (Daniel Naber)
-
- 2. LUCENE-583: ISOLatin1AccentFilter fails to preserve positionIncrement
- (Yonik Seeley)
-
- 3. LUCENE-575: SpellChecker min score is incorrectly changed by suggestSimilar
- (Karl Wettin via Yonik Seeley)
-
- 4. LUCENE-587: Explanation.toHtml was producing malformed HTML
- (Chris Hostetter)
-
- 5. Fix to allow MatchAllDocsQuery to be used with RemoteSearcher (Yonik Seeley)
-
- 6. LUCENE-601: RAMDirectory and RAMFile made Serializable
- (Karl Wettin via Otis Gospodnetic)
-
- 7. LUCENE-557: Fixes to BooleanQuery and FilteredQuery so that the score
- Explanations match up with the real scores.
- (Chris Hostetter)
-
- 8. LUCENE-607: ParallelReader's TermEnum fails to advance properly to
- new fields (Chuck Williams, Christian Kohlschuetter via Yonik Seeley)
-
- 9. LUCENE-610,LUCENE-611: Simple syntax changes to allow compilation with ecj:
- disambiguate inner class scorer's use of doc() in BooleanScorer2,
- other test code changes. (DM Smith via Yonik Seeley)
-
-10. LUCENE-451: All core query types now use ComplexExplanations so that
- boosts of zero don't confuse the BooleanWeight explain method.
- (Chris Hostetter)
-
-11. LUCENE-593: Fixed LuceneDictionary's inner Iterator
- (Kåre Fiedler Christiansen via Otis Gospodnetic)
-
-12. LUCENE-641: fixed an off-by-one bug with IndexWriter.setMaxFieldLength()
- (Daniel Naber)
-
-13. LUCENE-659: Make PerFieldAnalyzerWrapper delegate getPositionIncrementGap()
- to the correct analyzer for the field. (Chuck Williams via Yonik Seeley)
-
-14. LUCENE-650: Fixed NPE in Locale specific String Sort when Document
- has no value.
- (Oliver Hutchison via Chris Hostetter)
-
-15. LUCENE-683: Fixed data corruption when reading lazy loaded fields.
- (Yonik Seeley)
-
-16. LUCENE-678: Fixed bug in NativeFSLockFactory which caused the same
- lock to be shared between different directories.
- (Michael McCandless via Yonik Seeley)
-
-17. LUCENE-690: Fixed thread unsafe use of IndexInput by lazy loaded fields.
- (Yonik Seeley)
-
-18. LUCENE-696: Fix bug when scorer for DisjunctionMaxQuery has skipTo()
- called on it before next(). (Yonik Seeley)
-
-19. LUCENE-569: Fixed SpanNearQuery bug, for 'inOrder' queries it would fail
- to recognize ordered spans if they overlapped with unordered spans.
- (Paul Elschot via Chris Hostetter)
-
-20. LUCENE-706: Updated fileformats.xml|html concerning the docdelta value
- in the frequency file. (Johan Stuyts, Doron Cohen via Grant Ingersoll)
-
-21. LUCENE-715: Fixed private constructor in IndexWriter.java to
- properly release the acquired write lock if there is an
- IOException after acquiring the write lock but before finishing
- instantiation. (Matthew Bogosian via Mike McCandless)
-
-22. LUCENE-651: Multiple different threads requesting the same
- FieldCache entry (often for Sorting by a field) at the same
- time caused multiple generations of that entry, which was
- detrimental to performance and memory use.
- (Oliver Hutchison via Otis Gospodnetic)
-
-23. LUCENE-717: Fixed build.xml not to fail when there is no lib dir.
- (Doron Cohen via Otis Gospodnetic)
-
-24. LUCENE-728: Removed duplicate/old MoreLikeThis and SimilarityQueries
- classes from contrib/similarity, as their new home is under
- contrib/queries.
- (Otis Gospodnetic)
-
-25. LUCENE-669: Do not double-close the RandomAccessFile in
- FSIndexInput/Output during finalize(). Besides sending an
- IOException up to the GC, this may also be the cause intermittent
- "The handle is invalid" IOExceptions on Windows when trying to
- close readers or writers. (Michael Busch via Mike McCandless)
-
-26. LUCENE-702: Fix IndexWriter.addIndexes(*) to not corrupt the index
- on any exceptions (eg disk full). The semantics of these methods
- is now transactional: either all indices are merged or none are.
- Also fixed IndexWriter.mergeSegments (called outside of
- addIndexes(*) by addDocument, optimize, flushRamSegments) and
- IndexReader.commit() (called by close) to clean up and keep the
- instance state consistent to what's actually in the index (Mike
- McCandless).
-
-27. LUCENE-129: Change finalizers to do "try {...} finally
- {super.finalize();}" to make sure we don't miss finalizers in
- classes above us. (Esmond Pitt via Mike McCandless)
-
-28. LUCENE-754: Fix a problem introduced by LUCENE-651, causing
- IndexReaders to hang around forever, in addition to not
- fixing the original FieldCache performance problem.
- (Chris Hostetter, Yonik Seeley)
-
-29. LUCENE-140: Fix IndexReader.deleteDocument(int docNum) to
- correctly raise ArrayIndexOutOfBoundsException when docNum is too
- large. Previously, if docNum was only slightly too large (within
- the same multiple of 8, ie, up to 7 ints beyond maxDoc), no
- exception would be raised and instead the index would become
- silently corrupted. The corruption then only appears much later,
- in mergeSegments, when the corrupted segment is merged with
- segment(s) after it. (Mike McCandless)
-
-30. LUCENE-768: Fix case where an Exception during deleteDocument,
- undeleteAll or setNorm in IndexReader could leave the reader in a
- state where close() fails to release the write lock.
- (Mike McCandless)
-
-31. Remove "tvp" from known index file extensions because it is
- never used. (Nicolas Lalevée via Bernhard Messer)
-
-32. LUCENE-767: Change how SegmentReader.maxDoc() is computed to not
- rely on file length check and instead use the SegmentInfo's
- docCount that's already stored explicitly in the index. This is a
- defensive bug fix (ie, there is no known problem seen "in real
- life" due to this, just a possible future problem). (Chuck
- Williams via Mike McCandless)
-
-Optimizations
-
- 1. LUCENE-586: TermDocs.skipTo() is now more efficient for
- multi-segment indexes. This will improve the performance of many
- types of queries against a non-optimized index. (Andrew Hudson
- via Yonik Seeley)
-
- 2. LUCENE-623: RAMDirectory.close now nulls out its reference to all
- internal "files", allowing them to be GCed even if references to the
- RAMDirectory itself still exist. (Nadav Har'El via Chris Hostetter)
-
- 3. LUCENE-629: Compressed fields are no longer uncompressed and
- recompressed during segment merges (e.g. during indexing or
- optimizing), thus improving performance . (Michael Busch via Otis
- Gospodnetic)
-
- 4. LUCENE-388: Improve indexing performance when maxBufferedDocs is
- large by keeping a count of buffered documents rather than
- counting after each document addition. (Doron Cohen, Paul Smith,
- Yonik Seeley)
-
- 5. Modified TermScorer.explain to use TermDocs.skipTo() instead of
- looping through docs. (Grant Ingersoll)
-
- 6. LUCENE-672: New indexing segment merge policy flushes all
- buffered docs to their own segment and delays a merge until
- mergeFactor segments of a certain level have been accumulated.
- This increases indexing performance in the presence of deleted
- docs or partially full segments as well as enabling future
- optimizations.
-
- NOTE: this also fixes an "under-merging" bug whereby it is
- possible to get far too many segments in your index (which will
- drastically slow down search, risks exhausting file descriptor
- limit, etc.). This can happen when the number of buffered docs
- at close, plus the number of docs in the last non-ram segment is
- greater than mergeFactor. (Ning Li, Yonik Seeley)
-
- 7. Lazy loaded fields unnecessarily retained an extra copy of loaded
- String data. (Yonik Seeley)
-
- 8. LUCENE-443: ConjunctionScorer performance increase. Speed up
- any BooleanQuery with more than one mandatory clause.
- (Abdul Chaudhry, Paul Elschot via Yonik Seeley)
-
- 9. LUCENE-365: DisjunctionSumScorer performance increase of
- ~30%. Speeds up queries with optional clauses. (Paul Elschot via
- Yonik Seeley)
-
- 10. LUCENE-695: Optimized BufferedIndexInput.readBytes() for medium
- size buffers, which will speed up merging and retrieving binary
- and compressed fields. (Nadav Har'El via Yonik Seeley)
-
- 11. LUCENE-687: Lazy skipping on proximity file speeds up most
- queries involving term positions, including phrase queries.
- (Michael Busch via Yonik Seeley)
-
- 12. LUCENE-714: Replaced 2 cases of manual for-loop array copying
- with calls to System.arraycopy instead, in DocumentWriter.java.
- (Nicolas Lalevee via Mike McCandless)
-
- 13. LUCENE-729: Non-recursive skipTo and next implementation of
- TermDocs for a MultiReader. The old implementation could
- recurse up to the number of segments in the index. (Yonik Seeley)
-
- 14. LUCENE-739: Improve segment merging performance by reusing
- the norm array across different fields and doing bulk writes
- of norms of segments with no deleted docs.
- (Michael Busch via Yonik Seeley)
-
- 15. LUCENE-745: Add BooleanQuery.clauses(), allowing direct access
- to the List of clauses and replaced the internal synchronized Vector
- with an unsynchronized List. (Yonik Seeley)
-
- 16. LUCENE-750: Remove finalizers from FSIndexOutput and move the
- FSIndexInput finalizer to the actual file so all clones don't
- register a new finalizer. (Yonik Seeley)
-
-Test Cases
-
- 1. Added TestTermScorer.java (Grant Ingersoll)
-
- 2. Added TestWindowsMMap.java (Benson Margulies via Mike McCandless)
-
- 3. LUCENE-744 Append the user.name property onto the temporary directory
- that is created so it doesn't interfere with other users. (Grant Ingersoll)
-
-Documentation
-
- 1. Added style sheet to xdocs named lucene.css and included in the
- Anakia VSL descriptor. (Grant Ingersoll)
-
- 2. Added scoring.xml document into xdocs. Updated Similarity.java
- scoring formula.(Grant Ingersoll and Steve Rowe. Updates from:
- Michael McCandless, Doron Cohen, Chris Hostetter, Doug Cutting).
- Issue 664.
-
- 3. Added javadocs for FieldSelectorResult.java. (Grant Ingersoll)
-
- 4. Moved xdocs directory to src/site/src/documentation/content/xdocs per
- Issue 707. Site now builds using Forrest, just like the other Lucene
- siblings. See http://wiki.apache.org/jakarta-lucene/HowToUpdateTheWebsite
- for info on updating the website. (Grant Ingersoll with help from Steve Rowe,
- Chris Hostetter, Doug Cutting, Otis Gospodnetic, Yonik Seeley)
-
- 5. Added in Developer and System Requirements sections under Resources (Grant Ingersoll)
-
- 6. LUCENE-713 Updated the Term Vector section of File Formats to include
- documentation on how Offset and Position info are stored in the TVF file.
- (Grant Ingersoll, Samir Abdou)
-
- 7. Added in link to Clover Test Code Coverage Reports under the Develop
- section in Resources (Grant Ingersoll)
-
- 8. LUCENE-748: Added details for semantics of IndexWriter.close on
- hitting an Exception. (Jed Wesley-Smith via Mike McCandless)
-
- 9. Added some text about what is contained in releases.
- (Eric Haszlakiewicz via Grant Ingersoll)
-
- 10. LUCENE-758: Fix javadoc to clarify that RAMDirectory(Directory)
- makes a full copy of the starting Directory. (Mike McCandless)
-
- 11. LUCENE-764: Fix javadocs to detail temporary space requirements
- for IndexWriter's optimize(), addIndexes(*) and addDocument(...)
- methods. (Mike McCandless)
-
-Build
-
- 1. Added in clover test code coverage per http://issues.apache.org/jira/browse/LUCENE-721
- To enable clover code coverage, you must have clover.jar in the ANT
- classpath and specify -Drun.clover=true on the command line.
- (Michael Busch and Grant Ingersoll)
-
- 2. Added a sysproperty in common-build.xml per Lucene 752 to map java.io.tmpdir to
- ${build.dir}/test just like the tempDir sysproperty.
-
- 3. LUCENE-757 Added new target named init-dist that does setup for
- distribution of both binary and source distributions. Called by package
- and package-*-src
-
-======================= Release 2.0.0 =======================
-
-API Changes
-
- 1. All deprecated methods and fields have been removed, except
- DateField, which will still be supported for some time
- so Lucene can read its date fields from old indexes
- (Yonik Seeley & Grant Ingersoll)
-
- 2. DisjunctionSumScorer is no longer public.
- (Paul Elschot via Otis Gospodnetic)
-
- 3. Creating a Field with both an empty name and an empty value
- now throws an IllegalArgumentException
- (Daniel Naber)
-
- 4. LUCENE-301: Added new IndexWriter({String,File,Directory},
- Analyzer) constructors that do not take a boolean "create"
- argument. These new constructors will create a new index if
- necessary, else append to the existing one. (Dan Armbrust via
- Mike McCandless)
-
-New features
-
- 1. LUCENE-496: Command line tool for modifying the field norms of an
- existing index; added to contrib/miscellaneous. (Chris Hostetter)
-
- 2. LUCENE-577: SweetSpotSimilarity added to contrib/miscellaneous.
- (Chris Hostetter)
-
-Bug fixes
-
- 1. LUCENE-330: Fix issue of FilteredQuery not working properly within
- BooleanQuery. (Paul Elschot via Erik Hatcher)
-
- 2. LUCENE-515: Make ConstantScoreRangeQuery and ConstantScoreQuery work
- with RemoteSearchable. (Philippe Laflamme via Yonik Seeley)
-
- 3. Added methods to get/set writeLockTimeout and commitLockTimeout in
- IndexWriter. These could be set in Lucene 1.4 using a system property.
- This feature had been removed without adding the corresponding
- getter/setter methods. (Daniel Naber)
-
- 4. LUCENE-413: Fixed ArrayIndexOutOfBoundsException exceptions
- when using SpanQueries. (Paul Elschot via Yonik Seeley)
-
- 5. Implemented FilterIndexReader.getVersion() and isCurrent()
- (Yonik Seeley)
-
- 6. LUCENE-540: Fixed a bug with IndexWriter.addIndexes(Directory[])
- that sometimes caused the index order of documents to change.
- (Yonik Seeley)
-
- 7. LUCENE-526: Fixed a bug in FieldSortedHitQueue that caused
- subsequent String sorts with different locales to sort identically.
- (Paul Cowan via Yonik Seeley)
-
- 8. LUCENE-541: Add missing extractTerms() to DisjunctionMaxQuery
- (Stefan Will via Yonik Seeley)
-
- 9. LUCENE-514: Added getTermArrays() and extractTerms() to
- MultiPhraseQuery (Eric Jain & Yonik Seeley)
-
-10. LUCENE-512: Fixed ClassCastException in ParallelReader.getTermFreqVectors
- (frederic via Yonik)
-
-11. LUCENE-352: Fixed bug in SpanNotQuery that manifested as
- NullPointerException when "exclude" query was not a SpanTermQuery.
- (Chris Hostetter)
-
-12. LUCENE-572: Fixed bug in SpanNotQuery hashCode, was ignoring exclude clause
- (Chris Hostetter)
-
-13. LUCENE-561: Fixed some ParallelReader bugs. NullPointerException if the reader
- didn't know about the field yet, reader didn't keep track if it had deletions,
- and deleteDocument calls could circumvent synchronization on the subreaders.
- (Chuck Williams via Yonik Seeley)
-
-14. LUCENE-556: Added empty extractTerms() implementation to MatchAllDocsQuery and
- ConstantScoreQuery in order to allow their use with a MultiSearcher.
- (Yonik Seeley)
-
-15. LUCENE-546: Removed 2GB file size limitations for RAMDirectory.
- (Peter Royal, Michael Chan, Yonik Seeley)
-
-16. LUCENE-485: Don't hold commit lock while removing obsolete index
- files. (Luc Vanlerberghe via cutting)
-
-
-1.9.1
-
-Bug fixes
-
- 1. LUCENE-511: Fix a bug in the BufferedIndexOutput optimization
- introduced in 1.9-final. (Shay Banon & Steven Tamm via cutting)
-
-1.9 final
-
-Note that this release is mostly but not 100% source compatible with
-the previous release of Lucene (1.4.3). In other words, you should
-make sure your application compiles with this version of Lucene before
-you replace the old Lucene JAR with the new one. Many methods have
-been deprecated in anticipation of release 2.0, so deprecation
-warnings are to be expected when upgrading from 1.4.3 to 1.9.
-
-Bug fixes
-
- 1. The fix that made IndexWriter.setMaxBufferedDocs(1) work had negative
- effects on indexing performance and has thus been reverted. The
- argument for setMaxBufferedDocs(int) must now at least be 2, otherwise
- an exception is thrown. (Daniel Naber)
-
-Optimizations
-
- 1. Optimized BufferedIndexOutput.writeBytes() to use
- System.arraycopy() in more cases, rather than copying byte-by-byte.
- (Lukas Zapletal via Cutting)
-
-1.9 RC1
-
-Requirements
-
- 1. To compile and use Lucene you now need Java 1.4 or later.
-
-Changes in runtime behavior
-
- 1. FuzzyQuery can no longer throw a TooManyClauses exception. If a
- FuzzyQuery expands to more than BooleanQuery.maxClauseCount
- terms only the BooleanQuery.maxClauseCount most similar terms
- go into the rewritten query and thus the exception is avoided.
- (Christoph)
-
- 2. Changed system property from "org.apache.lucene.lockdir" to
- "org.apache.lucene.lockDir", so that its casing follows the existing
- pattern used in other Lucene system properties. (Bernhard)
-
- 3. The terms of RangeQueries and FuzzyQueries are now converted to
- lowercase by default (as it has been the case for PrefixQueries
- and WildcardQueries before). Use setLowercaseExpandedTerms(false)
- to disable that behavior but note that this also affects
- PrefixQueries and WildcardQueries. (Daniel Naber)
-
- 4. Document frequency that is computed when MultiSearcher is used is now
- computed correctly and "globally" across subsearchers and indices, while
- before it used to be computed locally to each index, which caused
- ranking across multiple indices not to be equivalent.
- (Chuck Williams, Wolf Siberski via Otis, bug #31841)
-
- 5. When opening an IndexWriter with create=true, Lucene now only deletes
- its own files from the index directory (looking at the file name suffixes
- to decide if a file belongs to Lucene). The old behavior was to delete
- all files. (Daniel Naber and Bernhard Messer, bug #34695)
-
- 6. The version of an IndexReader, as returned by getCurrentVersion()
- and getVersion() doesn't start at 0 anymore for new indexes. Instead, it
- is now initialized by the system time in milliseconds.
- (Bernhard Messer via Daniel Naber)
-
- 7. Several default values cannot be set via system properties anymore, as
- this has been considered inappropriate for a library like Lucene. For
- most properties there are set/get methods available in IndexWriter which
- you should use instead. This affects the following properties:
- See IndexWriter for getter/setter methods:
- org.apache.lucene.writeLockTimeout, org.apache.lucene.commitLockTimeout,
- org.apache.lucene.minMergeDocs, org.apache.lucene.maxMergeDocs,
- org.apache.lucene.maxFieldLength, org.apache.lucene.termIndexInterval,
- org.apache.lucene.mergeFactor,
- See BooleanQuery for getter/setter methods:
- org.apache.lucene.maxClauseCount
- See FSDirectory for getter/setter methods:
- disableLuceneLocks
- (Daniel Naber)
-
- 8. Fixed FieldCacheImpl to use user-provided IntParser and FloatParser,
- instead of using Integer and Float classes for parsing.
- (Yonik Seeley via Otis Gospodnetic)
-
- 9. Expert level search routines returning TopDocs and TopFieldDocs
- no longer normalize scores. This also fixes bugs related to
- MultiSearchers and score sorting/normalization.
- (Luc Vanlerberghe via Yonik Seeley, LUCENE-469)
-
-New features
-
- 1. Added support for stored compressed fields (patch #31149)
- (Bernhard Messer via Christoph)
-
- 2. Added support for binary stored fields (patch #29370)
- (Drew Farris and Bernhard Messer via Christoph)
-
- 3. Added support for position and offset information in term vectors
- (patch #18927). (Grant Ingersoll & Christoph)
-
- 4. A new class DateTools has been added. It allows you to format dates
- in a readable format adequate for indexing. Unlike the existing
- DateField class DateTools can cope with dates before 1970 and it
- forces you to specify the desired date resolution (e.g. month, day,
- second, ...) which can make RangeQuerys on those fields more efficient.
- (Daniel Naber)
-
- 5. QueryParser now correctly works with Analyzers that can return more
- than one token per position. For example, a query "+fast +car"
- would be parsed as "+fast +(car automobile)" if the Analyzer
- returns "car" and "automobile" at the same position whenever it
- finds "car" (Patch #23307).
- (Pierrick Brihaye, Daniel Naber)
-
- 6. Permit unbuffered Directory implementations (e.g., using mmap).
- InputStream is replaced by the new classes IndexInput and
- BufferedIndexInput. OutputStream is replaced by the new classes
- IndexOutput and BufferedIndexOutput. InputStream and OutputStream
- are now deprecated and FSDirectory is now subclassable. (cutting)
-
- 7. Add native Directory and TermDocs implementations that work under
- GCJ. These require GCC 3.4.0 or later and have only been tested
- on Linux. Use 'ant gcj' to build demo applications. (cutting)
-
- 8. Add MMapDirectory, which uses nio to mmap input files. This is
- still somewhat slower than FSDirectory. However it uses less
- memory per query term, since a new buffer is not allocated per
- term, which may help applications which use, e.g., wildcard
- queries. It may also someday be faster. (cutting & Paul Elschot)
-
- 9. Added javadocs-internal to build.xml - bug #30360
- (Paul Elschot via Otis)
-
-10. Added RangeFilter, a more generically useful filter than DateFilter.
- (Chris M Hostetter via Erik)
-
-11. Added NumberTools, a utility class indexing numeric fields.
- (adapted from code contributed by Matt Quail; committed by Erik)
-
-12. Added public static IndexReader.main(String[] args) method.
- IndexReader can now be used directly at command line level
- to list and optionally extract the individual files from an existing
- compound index file.
- (adapted from code contributed by Garrett Rooney; committed by Bernhard)
-
-13. Add IndexWriter.setTermIndexInterval() method. See javadocs.
- (Doug Cutting)
-
-14. Added LucenePackage, whose static get() method returns java.util.Package,
- which lets the caller get the Lucene version information specified in
- the Lucene Jar.
- (Doug Cutting via Otis)
-
-15. Added Hits.iterator() method and corresponding HitIterator and Hit objects.
- This provides standard java.util.Iterator iteration over Hits.
- Each call to the iterator's next() method returns a Hit object.
- (Jeremy Rayner via Erik)
-
-16. Add ParallelReader, an IndexReader that combines separate indexes
- over different fields into a single virtual index. (Doug Cutting)
-
-17. Add IntParser and FloatParser interfaces to FieldCache, so that
- fields in arbitrarily formats can be cached as ints and floats.
- (Doug Cutting)
-
-18. Added class org.apache.lucene.index.IndexModifier which combines
- IndexWriter and IndexReader, so you can add and delete documents without
- worrying about synchronization/locking issues.
- (Daniel Naber)
-
-19. Lucene can now be used inside an unsigned applet, as Lucene's access
- to system properties will not cause a SecurityException anymore.
- (Jon Schuster via Daniel Naber, bug #34359)
-
-20. Added a new class MatchAllDocsQuery that matches all documents.
- (John Wang via Daniel Naber, bug #34946)
-
-21. Added ability to omit norms on a per field basis to decrease
- index size and memory consumption when there are many indexed fields.
- See Field.setOmitNorms()
- (Yonik Seeley, LUCENE-448)
-
-22. Added NullFragmenter to contrib/highlighter, which is useful for
- highlighting entire documents or fields.
- (Erik Hatcher)
-
-23. Added regular expression queries, RegexQuery and SpanRegexQuery.
- Note the same term enumeration caveats apply with these queries as
- apply to WildcardQuery and other term expanding queries.
- These two new queries are not currently supported via QueryParser.
- (Erik Hatcher)
-
-24. Added ConstantScoreQuery which wraps a filter and produces a score
- equal to the query boost for every matching document.
- (Yonik Seeley, LUCENE-383)
-
-25. Added ConstantScoreRangeQuery which produces a constant score for
- every document in the range. One advantage over a normal RangeQuery
- is that it doesn't expand to a BooleanQuery and thus doesn't have a maximum
- number of terms the range can cover. Both endpoints may also be open.
- (Yonik Seeley, LUCENE-383)
-
-26. Added ability to specify a minimum number of optional clauses that
- must match in a BooleanQuery. See BooleanQuery.setMinimumNumberShouldMatch().
- (Paul Elschot, Chris Hostetter via Yonik Seeley, LUCENE-395)
-
-27. Added DisjunctionMaxQuery which provides the maximum score across its clauses.
- It's very useful for searching across multiple fields.
- (Chuck Williams via Yonik Seeley, LUCENE-323)
-
-28. New class ISOLatin1AccentFilter that replaces accented characters in the ISO
- Latin 1 character set by their unaccented equivalent.
- (Sven Duzont via Erik Hatcher)
-
-29. New class KeywordAnalyzer. "Tokenizes" the entire stream as a single token.
- This is useful for data like zip codes, ids, and some product names.
- (Erik Hatcher)
-
-30. Copied LengthFilter from contrib area to core. Removes words that are too
- long and too short from the stream.
- (David Spencer via Otis and Daniel)
-
-31. Added getPositionIncrementGap(String fieldName) to Analyzer. This allows
- custom analyzers to put gaps between Field instances with the same field
- name, preventing phrase or span queries crossing these boundaries. The
- default implementation issues a gap of 0, allowing the default token
- position increment of 1 to put the next field's first token into a
- successive position.
- (Erik Hatcher, with advice from Yonik)
-
-32. StopFilter can now ignore case when checking for stop words.
- (Grant Ingersoll via Yonik, LUCENE-248)
-
-33. Add TopDocCollector and TopFieldDocCollector. These simplify the
- implementation of hit collectors that collect only the
- top-scoring or top-sorting hits.
-
-API Changes
-
- 1. Several methods and fields have been deprecated. The API documentation
- contains information about the recommended replacements. It is planned
- that most of the deprecated methods and fields will be removed in
- Lucene 2.0. (Daniel Naber)
-
- 2. The Russian and the German analyzers have been moved to contrib/analyzers.
- Also, the WordlistLoader class has been moved one level up in the
- hierarchy and is now org.apache.lucene.analysis.WordlistLoader
- (Daniel Naber)
-
- 3. The API contained methods that declared to throw an IOException
- but that never did this. These declarations have been removed. If
- your code tries to catch these exceptions you might need to remove
- those catch clauses to avoid compile errors. (Daniel Naber)
-
- 4. Add a serializable Parameter Class to standardize parameter enum
- classes in BooleanClause and Field. (Christoph)
-
- 5. Added rewrite methods to all SpanQuery subclasses that nest other SpanQuerys.
- This allows custom SpanQuery subclasses that rewrite (for term expansion, for
- example) to nest within the built-in SpanQuery classes successfully.
-
-Bug fixes
-
- 1. The JSP demo page (src/jsp/results.jsp) now properly closes the
- IndexSearcher it opens. (Daniel Naber)
-
- 2. Fixed a bug in IndexWriter.addIndexes(IndexReader[] readers) that
- prevented deletion of obsolete segments. (Christoph Goller)
-
- 3. Fix in FieldInfos to avoid the return of an extra blank field in
- IndexReader.getFieldNames() (Patch #19058). (Mark Harwood via Bernhard)
-
- 4. Some combinations of BooleanQuery and MultiPhraseQuery (formerly
- PhrasePrefixQuery) could provoke UnsupportedOperationException
- (bug #33161). (Rhett Sutphin via Daniel Naber)
-
- 5. Small bug in skipTo of ConjunctionScorer that caused NullPointerException
- if skipTo() was called without prior call to next() fixed. (Christoph)
-
- 6. Disable Similiarty.coord() in the scoring of most automatically
- generated boolean queries. The coord() score factor is
- appropriate when clauses are independently specified by a user,
- but is usually not appropriate when clauses are generated
- automatically, e.g., by a fuzzy, wildcard or range query. Matches
- on such automatically generated queries are no longer penalized
- for not matching all terms. (Doug Cutting, Patch #33472)
-
- 7. Getting a lock file with Lock.obtain(long) was supposed to wait for
- a given amount of milliseconds, but this didn't work.
- (John Wang via Daniel Naber, Bug #33799)
-
- 8. Fix FSDirectory.createOutput() to always create new files.
- Previously, existing files were overwritten, and an index could be
- corrupted when the old version of a file was longer than the new.
- Now any existing file is first removed. (Doug Cutting)
-
- 9. Fix BooleanQuery containing nested SpanTermQuery's, which previously
- could return an incorrect number of hits.
- (Reece Wilton via Erik Hatcher, Bug #35157)
-
-10. Fix NullPointerException that could occur with a MultiPhraseQuery
- inside a BooleanQuery.
- (Hans Hjelm and Scotty Allen via Daniel Naber, Bug #35626)
-
-11. Fixed SnowballFilter to pass through the position increment from
- the original token.
- (Yonik Seeley via Erik Hatcher, LUCENE-437)
-
-12. Added Unicode range of Korean characters to StandardTokenizer,
- grouping contiguous characters into a token rather than one token
- per character. This change also changes the token type to "<CJ>"
- for Chinese and Japanese character tokens (previously it was "<CJK>").
- (Cheolgoo Kang via Otis and Erik, LUCENE-444 and LUCENE-461)
-
-13. FieldsReader now looks at FieldInfo.storeOffsetWithTermVector and
- FieldInfo.storePositionWithTermVector and creates the Field with
- correct TermVector parameter.
- (Frank Steinmann via Bernhard, LUCENE-455)
-
-14. Fixed WildcardQuery to prevent "cat" matching "ca??".
- (Xiaozheng Ma via Bernhard, LUCENE-306)
-
-15. Fixed a bug where MultiSearcher and ParallelMultiSearcher could
- change the sort order when sorting by string for documents without
- a value for the sort field.
- (Luc Vanlerberghe via Yonik, LUCENE-453)
-
-16. Fixed a sorting problem with MultiSearchers that can lead to
- missing or duplicate docs due to equal docs sorting in an arbitrary order.
- (Yonik Seeley, LUCENE-456)
-
-17. A single hit using the expert level sorted search methods
- resulted in the score not being normalized.
- (Yonik Seeley, LUCENE-462)
-
-18. Fixed inefficient memory usage when loading an index into RAMDirectory.
- (Volodymyr Bychkoviak via Bernhard, LUCENE-475)
-
-19. Corrected term offsets returned by ChineseTokenizer.
- (Ray Tsang via Erik Hatcher, LUCENE-324)
-
-20. Fixed MultiReader.undeleteAll() to correctly update numDocs.
- (Robert Kirchgessner via Doug Cutting, LUCENE-479)
-
-21. Race condition in IndexReader.getCurrentVersion() and isCurrent()
- fixed by acquiring the commit lock.
- (Luc Vanlerberghe via Yonik Seeley, LUCENE-481)
-
-22. IndexWriter.setMaxBufferedDocs(1) didn't have the expected effect,
- this has now been fixed. (Daniel Naber)
-
-23. Fixed QueryParser when called with a date in local form like
- "[1/16/2000 TO 1/18/2000]". This query did not include the documents
- of 1/18/2000, i.e. the last day was not included. (Daniel Naber)
-
-24. Removed sorting constraint that threw an exception if there were
- not yet any values for the sort field (Yonik Seeley, LUCENE-374)
-
-Optimizations
-
- 1. Disk usage (peak requirements during indexing and optimization)
- in case of compound file format has been improved.
- (Bernhard, Dmitry, and Christoph)
-
- 2. Optimize the performance of certain uses of BooleanScorer,
- TermScorer and IndexSearcher. In particular, a BooleanQuery
- composed of TermQuery, with not all terms required, that returns a
- TopDocs (e.g., through a Hits with no Sort specified) runs much
- faster. (cutting)
-
- 3. Removed synchronization from reading of term vectors with an
- IndexReader (Patch #30736). (Bernhard Messer via Christoph)
-
- 4. Optimize term-dictionary lookup to allocate far fewer terms when
- scanning for the matching term. This speeds searches involving
- low-frequency terms, where the cost of dictionary lookup can be
- significant. (cutting)
-
- 5. Optimize fuzzy queries so the standard fuzzy queries with a prefix
- of 0 now run 20-50% faster (Patch #31882).
- (Jonathan Hager via Daniel Naber)
-
- 6. A Version of BooleanScorer (BooleanScorer2) added that delivers
- documents in increasing order and implements skipTo. For queries
- with required or forbidden clauses it may be faster than the old
- BooleanScorer, for BooleanQueries consisting only of optional
- clauses it is probably slower. The new BooleanScorer is now the
- default. (Patch 31785 by Paul Elschot via Christoph)
-
- 7. Use uncached access to norms when merging to reduce RAM usage.
- (Bug #32847). (Doug Cutting)
-
- 8. Don't read term index when random-access is not required. This
- reduces time to open IndexReaders and they use less memory when
- random access is not required, e.g., when merging segments. The
- term index is now read into memory lazily at the first
- random-access. (Doug Cutting)
-
- 9. Optimize IndexWriter.addIndexes(Directory[]) when the number of
- added indexes is larger than mergeFactor. Previously this could
- result in quadratic performance. Now performance is n log(n).
- (Doug Cutting)
-
-10. Speed up the creation of TermEnum for indices with multiple
- segments and deleted documents, and thus speed up PrefixQuery,
- RangeQuery, WildcardQuery, FuzzyQuery, RangeFilter, DateFilter,
- and sorting the first time on a field.
- (Yonik Seeley, LUCENE-454)
-
-11. Optimized and generalized 32 bit floating point to byte
- (custom 8 bit floating point) conversions. Increased the speed of
- Similarity.encodeNorm() anywhere from 10% to 250%, depending on the JVM.
- (Yonik Seeley, LUCENE-467)
-
-Infrastructure
-
- 1. Lucene's source code repository has converted from CVS to
- Subversion. The new repository is at
- http://svn.apache.org/repos/asf/lucene/java/trunk
-
- 2. Lucene's issue tracker has migrated from Bugzilla to JIRA.
- Lucene's JIRA is at http://issues.apache.org/jira/browse/LUCENE
- The old issues are still available at
- http://issues.apache.org/bugzilla/show_bug.cgi?id=xxxx
- (use the bug number instead of xxxx)
-
-
-1.4.3
-
- 1. The JSP demo page (src/jsp/results.jsp) now properly escapes error
- messages which might contain user input (e.g. error messages about
- query parsing). If you used that page as a starting point for your
- own code please make sure your code also properly escapes HTML
- characters from user input in order to avoid so-called cross site
- scripting attacks. (Daniel Naber)
-
- 2. QueryParser changes in 1.4.2 broke the QueryParser API. Now the old
- API is supported again. (Christoph)
-
-
-1.4.2
-
- 1. Fixed bug #31241: Sorting could lead to incorrect results (documents
- missing, others duplicated) if the sort keys were not unique and there
- were more than 100 matches. (Daniel Naber)
-
- 2. Memory leak in Sort code (bug #31240) eliminated.
- (Rafal Krzewski via Christoph and Daniel)
-
- 3. FuzzyQuery now takes an additional parameter that specifies the
- minimum similarity that is required for a term to match the query.
- The QueryParser syntax for this is term~x, where x is a floating
- point number >= 0 and < 1 (a bigger number means that a higher
- similarity is required). Furthermore, a prefix can be specified
- for FuzzyQuerys so that only those terms are considered similar that
- start with this prefix. This can speed up FuzzyQuery greatly.
- (Daniel Naber, Christoph Goller)
-
- 4. PhraseQuery and PhrasePrefixQuery now allow the explicit specification
- of relative positions. (Christoph Goller)
-
- 5. QueryParser changes: Fix for ArrayIndexOutOfBoundsExceptions
- (patch #9110); some unused method parameters removed; The ability
- to specify a minimum similarity for FuzzyQuery has been added.
- (Christoph Goller)
-
- 6. IndexSearcher optimization: a new ScoreDoc is no longer allocated
- for every non-zero-scoring hit. This makes 'OR' queries that
- contain common terms substantially faster. (cutting)
-
-
-1.4.1
-
- 1. Fixed a performance bug in hit sorting code, where values were not
- correctly cached. (Aviran via cutting)
-
- 2. Fixed errors in file format documentation. (Daniel Naber)
-
-
-1.4 final
-
- 1. Added "an" to the list of stop words in StopAnalyzer, to complement
- the existing "a" there. Fix for bug 28960
- (http://issues.apache.org/bugzilla/show_bug.cgi?id=28960). (Otis)
-
- 2. Added new class FieldCache to manage in-memory caches of field term
- values. (Tim Jones)
-
- 3. Added overloaded getFieldQuery method to QueryParser which
- accepts the slop factor specified for the phrase (or the default
- phrase slop for the QueryParser instance). This allows overriding
- methods to replace a PhraseQuery with a SpanNearQuery instead,
- keeping the proper slop factor. (Erik Hatcher)
-
- 4. Changed the encoding of GermanAnalyzer.java and GermanStemmer.java to
- UTF-8 and changed the build encoding to UTF-8, to make changed files
- compile. (Otis Gospodnetic)
-
- 5. Removed synchronization from term lookup under IndexReader methods
- termFreq(), termDocs() or termPositions() to improve
- multi-threaded performance. (cutting)
-
- 6. Fix a bug where obsolete segment files were not deleted on Win32.
-
-
-1.4 RC3
-
- 1. Fixed several search bugs introduced by the skipTo() changes in
- release 1.4RC1. The index file format was changed a bit, so
- collections must be re-indexed to take advantage of the skipTo()
- optimizations. (Christoph Goller)
-
- 2. Added new Document methods, removeField() and removeFields().
- (Christoph Goller)
-
- 3. Fixed inconsistencies with index closing. Indexes and directories
- are now only closed automatically by Lucene when Lucene opened
- them automatically. (Christoph Goller)
-
- 4. Added new class: FilteredQuery. (Tim Jones)
-
- 5. Added a new SortField type for custom comparators. (Tim Jones)
-
- 6. Lock obtain timed out message now displays the full path to the lock
- file. (Daniel Naber via Erik)
-
- 7. Fixed a bug in SpanNearQuery when ordered. (Paul Elschot via cutting)
-
- 8. Fixed so that FSDirectory's locks still work when the
- java.io.tmpdir system property is null. (cutting)
-
- 9. Changed FilteredTermEnum's constructor to take no parameters,
- as the parameters were ignored anyway (bug #28858)
-
-1.4 RC2
-
- 1. GermanAnalyzer now throws an exception if the stopword file
- cannot be found (bug #27987). It now uses LowerCaseFilter
- (bug #18410) (Daniel Naber via Otis, Erik)
-
- 2. Fixed a few bugs in the file format documentation. (cutting)
-
-
-1.4 RC1
-
- 1. Changed the format of the .tis file, so that:
-
- - it has a format version number, which makes it easier to
- back-compatibly change file formats in the future.
-
- - the term count is now stored as a long. This was the one aspect
- of the Lucene's file formats which limited index size.
-
- - a few internal index parameters are now stored in the index, so
- that they can (in theory) now be changed from index to index,
- although there is not yet an API to do so.
-
- These changes are back compatible. The new code can read old
- indexes. But old code will not be able read new indexes. (cutting)
-
- 2. Added an optimized implementation of TermDocs.skipTo(). A skip
- table is now stored for each term in the .frq file. This only
- adds a percent or two to overall index size, but can substantially
- speedup many searches. (cutting)
-
- 3. Restructured the Scorer API and all Scorer implementations to take
- advantage of an optimized TermDocs.skipTo() implementation. In
- particular, PhraseQuerys and conjunctive BooleanQuerys are
- faster when one clause has substantially fewer matches than the
- others. (A conjunctive BooleanQuery is a BooleanQuery where all
- clauses are required.) (cutting)
-
- 4. Added new class ParallelMultiSearcher. Combined with
- RemoteSearchable this makes it easy to implement distributed
- search systems. (Jean-Francois Halleux via cutting)
-
- 5. Added support for hit sorting. Results may now be sorted by any
- indexed field. For details see the javadoc for
- Searcher#search(Query, Sort). (Tim Jones via Cutting)
-
- 6. Changed FSDirectory to auto-create a full directory tree that it
- needs by using mkdirs() instead of mkdir(). (Mladen Turk via Otis)
-
- 7. Added a new span-based query API. This implements, among other
- things, nested phrases. See javadocs for details. (Doug Cutting)
-
- 8. Added new method Query.getSimilarity(Searcher), and changed
- scorers to use it. This permits one to subclass a Query class so
- that it can specify its own Similarity implementation, perhaps
- one that delegates through that of the Searcher. (Julien Nioche
- via Cutting)
-
- 9. Added MultiReader, an IndexReader that combines multiple other
- IndexReaders. (Cutting)
-
-10. Added support for term vectors. See Field#isTermVectorStored().
- (Grant Ingersoll, Cutting & Dmitry)
-
-11. Fixed the old bug with escaping of special characters in query
- strings: http://issues.apache.org/bugzilla/show_bug.cgi?id=24665
- (Jean-Francois Halleux via Otis)
-
-12. Added support for overriding default values for the following,
- using system properties:
- - default commit lock timeout
- - default maxFieldLength
- - default maxMergeDocs
- - default mergeFactor
- - default minMergeDocs
- - default write lock timeout
- (Otis)
-
-13. Changed QueryParser.jj to allow '-' and '+' within tokens:
- http://issues.apache.org/bugzilla/show_bug.cgi?id=27491
- (Morus Walter via Otis)
-
-14. Changed so that the compound index format is used by default.
- This makes indexing a bit slower, but vastly reduces the chances
- of file handle problems. (Cutting)
-
-
-1.3 final
-
- 1. Added catch of BooleanQuery$TooManyClauses in QueryParser to
- throw ParseException instead. (Erik Hatcher)
-
- 2. Fixed a NullPointerException in Query.explain(). (Doug Cutting)
-
- 3. Added a new method IndexReader.setNorm(), that permits one to
- alter the boosting of fields after an index is created.
-
- 4. Distinguish between the final position and length when indexing a
- field. The length is now defined as the total number of tokens,
- instead of the final position, as it was previously. Length is
- used for score normalization (Similarity.lengthNorm()) and for
- controlling memory usage (IndexWriter.maxFieldLength). In both of
- these cases, the total number of tokens is a better value to use
- than the final token position. Position is used in phrase
- searching (see PhraseQuery and Token.setPositionIncrement()).
-
- 5. Fix StandardTokenizer's handling of CJK characters (Chinese,
- Japanese and Korean ideograms). Previously contiguous sequences
- were combined in a single token, which is not very useful. Now
- each ideogram generates a separate token, which is more useful.
-
-
-1.3 RC3
-
- 1. Added minMergeDocs in IndexWriter. This can be raised to speed
- indexing without altering the number of files, but only using more
- memory. (Julien Nioche via Otis)
-
- 2. Fix bug #24786, in query rewriting. (bschneeman via Cutting)
-
- 3. Fix bug #16952, in demo HTML parser, skip comments in
- javascript. (Christoph Goller)
-
- 4. Fix bug #19253, in demo HTML parser, add whitespace as needed to
- output (Daniel Naber via Christoph Goller)
-
- 5. Fix bug #24301, in demo HTML parser, long titles no longer
- hang things. (Christoph Goller)
-
- 6. Fix bug #23534, Replace use of file timestamp of segments file
- with an index version number stored in the segments file. This
- resolves problems when running on file systems with low-resolution
- timestamps, e.g., HFS under MacOS X. (Christoph Goller)
-
- 7. Fix QueryParser so that TokenMgrError is not thrown, only
- ParseException. (Erik Hatcher)
-
- 8. Fix some bugs introduced by change 11 of RC2. (Christoph Goller)
-
- 9. Fixed a problem compiling TestRussianStem. (Christoph Goller)
-
-10. Cleaned up some build stuff. (Erik Hatcher)
-
-
-1.3 RC2
-
- 1. Added getFieldNames(boolean) to IndexReader, SegmentReader, and
- SegmentsReader. (Julien Nioche via otis)
-
- 2. Changed file locking to place lock files in
- System.getProperty("java.io.tmpdir"), where all users are
- permitted to write files. This way folks can open and correctly
- lock indexes which are read-only to them.
-
- 3. IndexWriter: added a new method, addDocument(Document, Analyzer),
- permitting one to easily use different analyzers for different
- documents in the same index.
-
- 4. Minor enhancements to FuzzyTermEnum.
- (Christoph Goller via Otis)
-
- 5. PriorityQueue: added insert(Object) method and adjusted IndexSearcher
- and MultiIndexSearcher to use it.
- (Christoph Goller via Otis)
-
- 6. Fixed a bug in IndexWriter that returned incorrect docCount().
- (Christoph Goller via Otis)
-
- 7. Fixed SegmentsReader to eliminate the confusing and slightly different
- behaviour of TermEnum when dealing with an enumeration of all terms,
- versus an enumeration starting from a specific term.
- This patch also fixes incorrect term document frequencies when the same term
- is present in multiple segments.
- (Christoph Goller via Otis)
-
- 8. Added CachingWrapperFilter and PerFieldAnalyzerWrapper. (Erik Hatcher)
-
- 9. Added support for the new "compound file" index format (Dmitry
- Serebrennikov)
-
-10. Added Locale setting to QueryParser, for use by date range parsing.
-
-11. Changed IndexReader so that it can be subclassed by classes
- outside of its package. Previously it had package-private
- abstract methods. Also modified the index merging code so that it
- can work on an arbitrary IndexReader implementation, and added a
- new method, IndexWriter.addIndexes(IndexReader[]), to take
- advantage of this. (cutting)
-
-12. Added a limit to the number of clauses which may be added to a
- BooleanQuery. The default limit is 1024 clauses. This should
- stop most OutOfMemoryExceptions by prefix, wildcard and fuzzy
- queries which run amok. (cutting)
-
-13. Add new method: IndexReader.undeleteAll(). This undeletes all
- deleted documents which still remain in the index. (cutting)
-
-
-1.3 RC1
-
- 1. Fixed PriorityQueue's clear() method.
- Fix for bug 9454, http://nagoya.apache.org/bugzilla/show_bug.cgi?id=9454
- (Matthijs Bomhoff via otis)
-
- 2. Changed StandardTokenizer.jj grammar for EMAIL tokens.
- Fix for bug 9015, http://nagoya.apache.org/bugzilla/show_bug.cgi?id=9015
- (Dale Anson via otis)
-
- 3. Added the ability to disable lock creation by using disableLuceneLocks
- system property. This is useful for read-only media, such as CD-ROMs.
- (otis)
-
- 4. Added id method to Hits to be able to access the index global id.
- Required for sorting options.
- (carlson)
-
- 5. Added support for new range query syntax to QueryParser.jj.
- (briangoetz)
-
- 6. Added the ability to retrieve HTML documents' META tag values to
- HTMLParser.jj.
- (Mark Harwood via otis)
-
- 7. Modified QueryParser to make it possible to programmatically specify the
- default Boolean operator (OR or AND).
- (Péter Halácsy via otis)
-
- 8. Made many search methods and classes non-final, per requests.
- This includes IndexWriter and IndexSearcher, among others.
- (cutting)
-
- 9. Added class RemoteSearchable, providing support for remote
- searching via RMI. The test class RemoteSearchableTest.java
- provides an example of how this can be used. (cutting)
-
- 10. Added PhrasePrefixQuery (and supporting MultipleTermPositions). The
- test class TestPhrasePrefixQuery provides the usage example.
- (Anders Nielsen via otis)
-
- 11. Changed the German stemming algorithm to ignore case while
- stripping. The new algorithm is faster and produces more equal
- stems from nouns and verbs derived from the same word.
- (gschwarz)
-
- 12. Added support for boosting the score of documents and fields via
- the new methods Document.setBoost(float) and Field.setBoost(float).
-
- Note: This changes the encoding of an indexed value. Indexes
- should be re-created from scratch in order for search scores to
- be correct. With the new code and an old index, searches will
- yield very large scores for shorter fields, and very small scores
- for longer fields. Once the index is re-created, scores will be
- as before. (cutting)
-
- 13. Added new method Token.setPositionIncrement().
-
- This permits, for the purpose of phrase searching, placing
- multiple terms in a single position. This is useful with
- stemmers that produce multiple possible stems for a word.
-
- This also permits the introduction of gaps between terms, so that
- terms which are adjacent in a token stream will not be matched by
- and exact phrase query. This makes it possible, e.g., to build
- an analyzer where phrases are not matched over stop words which
- have been removed.
-
- Finally, repeating a token with an increment of zero can also be
- used to boost scores of matches on that token. (cutting)
-
- 14. Added new Filter class, QueryFilter. This constrains search
- results to only match those which also match a provided query.
- Results are cached, so that searches after the first on the same
- index using this filter are very fast.
-
- This could be used, for example, with a RangeQuery on a formatted
- date field to implement date filtering. One could re-use a
- single QueryFilter that matches, e.g., only documents modified
- within the last week. The QueryFilter and RangeQuery would only
- need to be reconstructed once per day. (cutting)
-
- 15. Added a new IndexWriter method, getAnalyzer(). This returns the
- analyzer used when adding documents to this index. (cutting)
-
- 16. Fixed a bug with IndexReader.lastModified(). Before, document
- deletion did not update this. Now it does. (cutting)
-
- 17. Added Russian Analyzer.
- (Boris Okner via otis)
-
- 18. Added a public, extensible scoring API. For details, see the
- javadoc for org.apache.lucene.search.Similarity.
-
- 19. Fixed return of Hits.id() from float to int. (Terry Steichen via Peter).
-
- 20. Added getFieldNames() to IndexReader and Segment(s)Reader classes.
- (Peter Mularien via otis)
-
- 21. Added getFields(String) and getValues(String) methods.
- Contributed by Rasik Pandey on 2002-10-09
- (Rasik Pandey via otis)
-
- 22. Revised internal search APIs. Changes include:
-
- a. Queries are no longer modified during a search. This makes
- it possible, e.g., to reuse the same query instance with
- multiple indexes from multiple threads.
-
- b. Term-expanding queries (e.g. PrefixQuery, WildcardQuery,
- etc.) now work correctly with MultiSearcher, fixing bugs 12619
- and 12667.
-
- c. Boosting BooleanQuery's now works, and is supported by the
- query parser (problem reported by Lee Mallabone). Thus a query
- like "(+foo +bar)^2 +baz" is now supported and equivalent to
- "(+foo^2 +bar^2) +baz".
-
- d. New method: Query.rewrite(IndexReader). This permits a
- query to re-write itself as an alternate, more primitive query.
- Most of the term-expanding query classes (PrefixQuery,
- WildcardQuery, etc.) are now implemented using this method.
-
- e. New method: Searchable.explain(Query q, int doc). This
- returns an Explanation instance that describes how a particular
- document is scored against a query. An explanation can be
- displayed as either plain text, with the toString() method, or
- as HTML, with the toHtml() method. Note that computing an
- explanation is as expensive as executing the query over the
- entire index. This is intended to be used in developing
- Similarity implementations, and, for good performance, should
- not be displayed with every hit.
-
- f. Scorer and Weight are public, not package protected. It now
- possible for someone to write a Scorer implementation that is
- not in the org.apache.lucene.search package. This is still
- fairly advanced programming, and I don't expect anyone to do
- this anytime soon, but at least now it is possible.
-
- g. Added public accessors to the primitive query classes
- (TermQuery, PhraseQuery and BooleanQuery), permitting access to
- their terms and clauses.
-
- Caution: These are extensive changes and they have not yet been
- tested extensively. Bug reports are appreciated.
- (cutting)
-
- 23. Added convenience RAMDirectory constructors taking File and String
- arguments, for easy FSDirectory to RAMDirectory conversion.
- (otis)
-
- 24. Added code for manual renaming of files in FSDirectory, since it
- has been reported that java.io.File's renameTo(File) method sometimes
- fails on Windows JVMs.
- (Matt Tucker via otis)
-
- 25. Refactored QueryParser to make it easier for people to extend it.
- Added the ability to automatically lower-case Wildcard terms in
- the QueryParser.
- (Tatu Saloranta via otis)
-
-
-1.2 RC6
-
- 1. Changed QueryParser.jj to have "?" be a special character which
- allowed it to be used as a wildcard term. Updated TestWildcard
- unit test also. (Ralf Hettesheimer via carlson)
-
-1.2 RC5
-
- 1. Renamed build.properties to default.properties and updated
- the BUILD.txt document to describe how to override the
- default.property settings without having to edit the file. This
- brings the build process closer to Scarab's build process.
- (jon)
-
- 2. Added MultiFieldQueryParser class. (Kelvin Tan, via otis)
-
- 3. Updated "powered by" links. (otis)
-
- 4. Fixed instruction for setting up JavaCC - Bug #7017 (otis)
-
- 5. Added throwing exception if FSDirectory could not create directory
- - Bug #6914 (Eugene Gluzberg via otis)
-
- 6. Update MultiSearcher, MultiFieldParse, Constants, DateFilter,
- LowerCaseTokenizer javadoc (otis)
-
- 7. Added fix to avoid NullPointerException in results.jsp
- (Mark Hayes via otis)
-
- 8. Changed Wildcard search to find 0 or more char instead of 1 or more
- (Lee Mallobone, via otis)
-
- 9. Fixed error in offset issue in GermanStemFilter - Bug #7412
- (Rodrigo Reyes, via otis)
-
- 10. Added unit tests for wildcard search and DateFilter (otis)
-
- 11. Allow co-existence of indexed and non-indexed fields with the same name
- (cutting/casper, via otis)
-
- 12. Add escape character to query parser.
- (briangoetz)
-
- 13. Applied a patch that ensures that searches that use DateFilter
- don't throw an exception when no matches are found. (David Smiley, via
- otis)
-
- 14. Fixed bugs in DateFilter and wildcardquery unit tests. (cutting, otis, carlson)
-
-
-1.2 RC4
-
- 1. Updated contributions section of website.
- Add XML Document #3 implementation to Document Section.
- Also added Term Highlighting to Misc Section. (carlson)
-
- 2. Fixed NullPointerException for phrase searches containing
- unindexed terms, introduced in 1.2RC3. (cutting)
-
- 3. Changed document deletion code to obtain the index write lock,
- enforcing the fact that document addition and deletion cannot be
- performed concurrently. (cutting)
-
- 4. Various documentation cleanups. (otis, acoliver)
-
- 5. Updated "powered by" links. (cutting, jon)
-
- 6. Fixed a bug in the GermanStemmer. (Bernhard Messer, via otis)
-
- 7. Changed Term and Query to implement Serializable. (scottganyo)
-
- 8. Fixed to never delete indexes added with IndexWriter.addIndexes().
- (cutting)
-
- 9. Upgraded to JUnit 3.7. (otis)
-
-1.2 RC3
-
- 1. IndexWriter: fixed a bug where adding an optimized index to an
- empty index failed. This was encountered using addIndexes to copy
- a RAMDirectory index to an FSDirectory.
-
- 2. RAMDirectory: fixed a bug where RAMInputStream could not read
- across more than across a single buffer boundary.
-
- 3. Fix query parser so it accepts queries with unicode characters.
- (briangoetz)
-
- 4. Fix query parser so that PrefixQuery is used in preference to
- WildcardQuery when there's only an asterisk at the end of the
- term. Previously PrefixQuery would never be used.
-
- 5. Fix tests so they compile; fix ant file so it compiles tests
- properly. Added test cases for Analyzers and PriorityQueue.
-
- 6. Updated demos, added Getting Started documentation. (acoliver)
-
- 7. Added 'contributions' section to website & docs. (carlson)
-
- 8. Removed JavaCC from source distribution for copyright reasons.
- Folks must now download this separately from metamata in order to
- compile Lucene. (cutting)
-
- 9. Substantially improved the performance of DateFilter by adding the
- ability to reuse TermDocs objects. (cutting)
-
-10. Added IndexReader methods:
- public static boolean indexExists(String directory);
- public static boolean indexExists(File directory);
- public static boolean indexExists(Directory directory);
- public static boolean isLocked(Directory directory);
- public static void unlock(Directory directory);
- (cutting, otis)
-
-11. Fixed bugs in GermanAnalyzer (gschwarz)
-
-
-1.2 RC2:
- - added sources to distribution
- - removed broken build scripts and libraries from distribution
- - SegmentsReader: fixed potential race condition
- - FSDirectory: fixed so that getDirectory(xxx,true) correctly
- erases the directory contents, even when the directory
- has already been accessed in this JVM.
- - RangeQuery: Fix issue where an inclusive range query would
- include the nearest term in the index above a non-existant
- specified upper term.
- - SegmentTermEnum: Fix NullPointerException in clone() method
- when the Term is null.
- - JDK 1.1 compatibility fix: disabled lock files for JDK 1.1,
- since they rely on a feature added in JDK 1.2.
-
-1.2 RC1 (first Apache release):
- - packages renamed from com.lucene to org.apache.lucene
- - license switched from LGPL to Apache
- - ant-only build -- no more makefiles
- - addition of lock files--now fully thread & process safe
- - addition of German stemmer
- - MultiSearcher now supports low-level search API
- - added RangeQuery, for term-range searching
- - Analyzers can choose tokenizer based on field name
- - misc bug fixes.
-
-1.01b (last Sourceforge release)
- . a few bug fixes
- . new Query Parser
- . new prefix query (search for "foo*" matches "food")
-
-1.0
-
-This release fixes a few serious bugs and also includes some
-performance optimizations, a stemmer, and a few other minor
-enhancements.
-
-0.04
-
-Lucene now includes a grammar-based tokenizer, StandardTokenizer.
-
-The only tokenizer included in the previous release (LetterTokenizer)
-identified terms consisting entirely of alphabetic characters. The
-new tokenizer uses a regular-expression grammar to identify more
-complex classes of terms, including numbers, acronyms, email
-addresses, etc.
-
-StandardTokenizer serves two purposes:
-
- 1. It is a much better, general purpose tokenizer for use by
- applications as is.
-
- The easiest way for applications to start using
- StandardTokenizer is to use StandardAnalyzer.
-
- 2. It provides a good example of grammar-based tokenization.
-
- If an application has special tokenization requirements, it can
- implement a custom tokenizer by copying the directory containing
- the new tokenizer into the application and modifying it
- accordingly.
-
-0.01
-
-First open source release.
-
-The code has been re-organized into a new package and directory
-structure for this release. It builds OK, but has not been tested
-beyond that since the re-organization.
fnp / pylucene.git / blobdiff