pylucene 3.5.0-3
[pylucene.git] / lucene-java-3.5.0 / lucene / backwards / src / test / org / apache / lucene / index / TestNRTThreads.java
diff --git a/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/index/TestNRTThreads.java b/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/index/TestNRTThreads.java
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+package org.apache.lucene.index;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.apache.lucene.analysis.MockAnalyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+import org.apache.lucene.search.IndexSearcher;
+import org.apache.lucene.search.PhraseQuery;
+import org.apache.lucene.search.Query;
+import org.apache.lucene.search.ScoreDoc;
+import org.apache.lucene.search.Sort;
+import org.apache.lucene.search.SortField;
+import org.apache.lucene.search.TermQuery;
+import org.apache.lucene.search.TopDocs;
+import org.apache.lucene.store.MockDirectoryWrapper;
+import org.apache.lucene.util.LineFileDocs;
+import org.apache.lucene.util.LuceneTestCase;
+import org.apache.lucene.util._TestUtil;
+import org.junit.Test;
+
+// TODO
+//   - mix in optimize, addIndexes
+//   - randomoly mix in non-congruent docs
+
+public class TestNRTThreads extends LuceneTestCase {
+
+  private static class SubDocs {
+    public final String packID;
+    public final List<String> subIDs;
+    public boolean deleted;
+
+    public SubDocs(String packID, List<String> subIDs) {
+      this.packID = packID;
+      this.subIDs = subIDs;
+    }
+  }
+
+  @Test
+  public void testNRTThreads() throws Exception {
+
+    final long t0 = System.currentTimeMillis();
+
+    final LineFileDocs docs = new LineFileDocs(random);
+    final File tempDir = _TestUtil.getTempDir("nrtopenfiles");
+    final MockDirectoryWrapper dir = newFSDirectory(tempDir);
+    dir.setCheckIndexOnClose(false); // don't double-checkIndex, we do it ourselves.
+    final IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random));
+    conf.setMergedSegmentWarmer(new IndexWriter.IndexReaderWarmer() {
+      @Override
+      public void warm(IndexReader reader) throws IOException {
+        if (VERBOSE) {
+          System.out.println("TEST: now warm merged reader=" + reader);
+        }
+        final int maxDoc = reader.maxDoc();
+        int sum = 0;
+        final int inc = Math.max(1, maxDoc/50);
+        for(int docID=0;docID<maxDoc;docID += inc) {
+          if (reader.isDeleted(docID)) {
+            final Document doc = reader.document(docID);
+            sum += doc.getFields().size();
+          }
+        }
+
+        IndexSearcher searcher = newSearcher(reader);
+        sum += searcher.search(new TermQuery(new Term("body", "united")), 10).totalHits;
+        searcher.close();
+
+        if (VERBOSE) {
+          System.out.println("TEST: warm visited " + sum + " fields");
+        }
+      }
+      });
+    
+    final IndexWriter writer = new IndexWriter(dir, conf);
+    if (VERBOSE) {
+      writer.setInfoStream(System.out);
+    }
+    _TestUtil.reduceOpenFiles(writer);
+
+    final int NUM_INDEX_THREADS = 2;
+    final int NUM_SEARCH_THREADS = 3;
+
+    final int RUN_TIME_SEC = LuceneTestCase.TEST_NIGHTLY ? 300 : RANDOM_MULTIPLIER;
+
+    final AtomicBoolean failed = new AtomicBoolean();
+    final AtomicInteger addCount = new AtomicInteger();
+    final AtomicInteger delCount = new AtomicInteger();
+    final AtomicInteger packCount = new AtomicInteger();
+
+    final Set<String> delIDs = Collections.synchronizedSet(new HashSet<String>());
+    final List<SubDocs> allSubDocs = Collections.synchronizedList(new ArrayList<SubDocs>());
+
+    final long stopTime = System.currentTimeMillis() + RUN_TIME_SEC*1000;
+    Thread[] threads = new Thread[NUM_INDEX_THREADS];
+    for(int thread=0;thread<NUM_INDEX_THREADS;thread++) {
+      threads[thread] = new Thread() {
+          @Override
+          public void run() {
+            // TODO: would be better if this were cross thread, so that we make sure one thread deleting anothers added docs works:
+            final List<String> toDeleteIDs = new ArrayList<String>();
+            final List<SubDocs> toDeleteSubDocs = new ArrayList<SubDocs>();
+            while(System.currentTimeMillis() < stopTime && !failed.get()) {
+              try {
+                Document doc = docs.nextDoc();
+                if (doc == null) {
+                  break;
+                }
+                final String addedField;
+                if (random.nextBoolean()) {
+                  addedField = "extra" + random.nextInt(10);
+                  doc.add(new Field(addedField, "a random field", Field.Store.NO, Field.Index.ANALYZED));
+                } else {
+                  addedField = null;
+                }
+                if (random.nextBoolean()) {
+                  if (VERBOSE) {
+                    System.out.println(Thread.currentThread().getName() + ": add doc id:" + doc.get("docid"));
+                  }
+
+                  if (random.nextBoolean()) {
+                    // Add a pack of adjacent sub-docs
+                    final String packID;
+                    final SubDocs delSubDocs;
+                    if (toDeleteSubDocs.size() > 0 && random.nextBoolean()) {
+                      delSubDocs = toDeleteSubDocs.get(random.nextInt(toDeleteSubDocs.size()));
+                      assert !delSubDocs.deleted;
+                      toDeleteSubDocs.remove(delSubDocs);
+                      // reuse prior packID
+                      packID = delSubDocs.packID;
+                    } else {
+                      delSubDocs = null;
+                      // make new packID
+                      packID = packCount.getAndIncrement() + "";
+                    }
+
+                    final Field packIDField = newField("packID", packID, Field.Store.YES, Field.Index.NOT_ANALYZED);
+                    final List<String> docIDs = new ArrayList<String>();
+                    final SubDocs subDocs = new SubDocs(packID, docIDs);
+                    final List<Document> docsList = new ArrayList<Document>();
+
+                    allSubDocs.add(subDocs);
+                    doc.add(packIDField);
+                    docsList.add(_TestUtil.cloneDocument(doc));
+                    docIDs.add(doc.get("docid"));
+
+                    final int maxDocCount = _TestUtil.nextInt(random, 1, 10);
+                    while(docsList.size() < maxDocCount) {
+                      doc = docs.nextDoc();
+                      if (doc == null) {
+                        break;
+                      }
+                      docsList.add(_TestUtil.cloneDocument(doc));
+                      docIDs.add(doc.get("docid"));
+                    }
+                    addCount.addAndGet(docsList.size());
+
+                    if (delSubDocs != null) {
+                      delSubDocs.deleted = true;
+                      delIDs.addAll(delSubDocs.subIDs);
+                      delCount.addAndGet(delSubDocs.subIDs.size());
+                      if (VERBOSE) {
+                        System.out.println("TEST: update pack packID=" + delSubDocs.packID + " count=" + docsList.size() + " docs=" + docIDs);
+                      }
+                      writer.updateDocuments(new Term("packID", delSubDocs.packID), docsList);
+                      /*
+                      // non-atomic:
+                      writer.deleteDocuments(new Term("packID", delSubDocs.packID));
+                      for(Document subDoc : docsList) {
+                        writer.addDocument(subDoc);
+                      }
+                      */
+                    } else {
+                      if (VERBOSE) {
+                        System.out.println("TEST: add pack packID=" + packID + " count=" + docsList.size() + " docs=" + docIDs);
+                      }
+                      writer.addDocuments(docsList);
+                      
+                      /*
+                      // non-atomic:
+                      for(Document subDoc : docsList) {
+                        writer.addDocument(subDoc);
+                      }
+                      */
+                    }
+                    doc.removeField("packID");
+
+                    if (random.nextInt(5) == 2) {
+                      if (VERBOSE) {
+                        //System.out.println(Thread.currentThread().getName() + ": buffer del id:" + packID);
+                      }
+                      toDeleteSubDocs.add(subDocs);
+                    }
+
+                  } else {
+                    writer.addDocument(doc);
+                    addCount.getAndIncrement();
+
+                    if (random.nextInt(5) == 3) {
+                      if (VERBOSE) {
+                        //System.out.println(Thread.currentThread().getName() + ": buffer del id:" + doc.get("docid"));
+                      }
+                      toDeleteIDs.add(doc.get("docid"));
+                    }
+                  }
+                } else {
+                  // we use update but it never replaces a
+                  // prior doc
+                  if (VERBOSE) {
+                    System.out.println(Thread.currentThread().getName() + ": update doc id:" + doc.get("docid"));
+                  }
+                  writer.updateDocument(new Term("docid", doc.get("docid")), doc);
+                  addCount.getAndIncrement();
+
+                  if (random.nextInt(5) == 3) {
+                    if (VERBOSE) {
+                      //System.out.println(Thread.currentThread().getName() + ": buffer del id:" + doc.get("docid"));
+                    }
+                    toDeleteIDs.add(doc.get("docid"));
+                  }
+                }
+
+                if (random.nextInt(30) == 17) {
+                  if (VERBOSE) {
+                    System.out.println(Thread.currentThread().getName() + ": apply " + toDeleteIDs.size() + " deletes");
+                  }
+                  for(String id : toDeleteIDs) {
+                    if (VERBOSE) {
+                      System.out.println(Thread.currentThread().getName() + ": del term=id:" + id);
+                    }
+                    writer.deleteDocuments(new Term("docid", id));
+                  }
+                  final int count = delCount.addAndGet(toDeleteIDs.size());
+                  if (VERBOSE) {
+                    System.out.println(Thread.currentThread().getName() + ": tot " + count + " deletes");
+                  }
+                  delIDs.addAll(toDeleteIDs);
+                  toDeleteIDs.clear();
+
+                  for(SubDocs subDocs : toDeleteSubDocs) {
+                    assert !subDocs.deleted;
+                    writer.deleteDocuments(new Term("packID", subDocs.packID));
+                    subDocs.deleted = true;
+                    if (VERBOSE) {
+                      System.out.println("  del subs: " + subDocs.subIDs + " packID=" + subDocs.packID);
+                    }
+                    delIDs.addAll(subDocs.subIDs);
+                    delCount.addAndGet(subDocs.subIDs.size());
+                  }
+                  toDeleteSubDocs.clear();
+                }
+                if (addedField != null) {
+                  doc.removeField(addedField);
+                }
+              } catch (Throwable t) {
+                System.out.println(Thread.currentThread().getName() + ": hit exc");
+                t.printStackTrace();
+                failed.set(true);
+                throw new RuntimeException(t);
+              }
+            }
+            if (VERBOSE) {
+              System.out.println(Thread.currentThread().getName() + ": indexing done");
+            }
+          }
+        };
+      threads[thread].setDaemon(true);
+      threads[thread].start();
+    }
+
+    if (VERBOSE) {
+      System.out.println("TEST: DONE start indexing threads [" + (System.currentTimeMillis()-t0) + " ms]");
+    }
+
+    // let index build up a bit
+    Thread.sleep(100);
+
+    IndexReader r = IndexReader.open(writer, true);
+    boolean any = false;
+
+    // silly starting guess:
+    final AtomicInteger totTermCount = new AtomicInteger(100);
+
+    final ExecutorService es = Executors.newCachedThreadPool();
+
+    while(System.currentTimeMillis() < stopTime && !failed.get()) {
+      if (random.nextBoolean()) {
+        if (VERBOSE) {
+          System.out.println("TEST: now reopen r=" + r);
+        }
+        final IndexReader r2 = r.reopen();
+        if (r != r2) {
+          r.close();
+          r = r2;
+        }
+      } else {
+        if (VERBOSE) {
+          System.out.println("TEST: now close reader=" + r);
+        }
+        r.close();
+        writer.commit();
+        final Set<String> openDeletedFiles = dir.getOpenDeletedFiles();
+        if (openDeletedFiles.size() > 0) {
+          System.out.println("OBD files: " + openDeletedFiles);
+        }
+        any |= openDeletedFiles.size() > 0;
+        //assertEquals("open but deleted: " + openDeletedFiles, 0, openDeletedFiles.size());
+        if (VERBOSE) {
+          System.out.println("TEST: now open");
+        }
+        r = IndexReader.open(writer, true);
+      }
+      if (VERBOSE) {
+        System.out.println("TEST: got new reader=" + r);
+      }
+      //System.out.println("numDocs=" + r.numDocs() + "
+      //openDelFileCount=" + dir.openDeleteFileCount());
+
+      smokeTestReader(r);
+
+      if (r.numDocs() > 0) {
+
+        final IndexSearcher s = new IndexSearcher(r, es);
+
+        // run search threads
+        final long searchStopTime = System.currentTimeMillis() + 500;
+        final Thread[] searchThreads = new Thread[NUM_SEARCH_THREADS];
+        final AtomicInteger totHits = new AtomicInteger();
+        for(int thread=0;thread<NUM_SEARCH_THREADS;thread++) {
+          searchThreads[thread] = new Thread() {
+              @Override
+              public void run() {
+                try {
+                  TermEnum termEnum = s.getIndexReader().terms(new Term("body", ""));
+                  int seenTermCount = 0;
+                  int shift;
+                  int trigger;
+                  if (totTermCount.get() < 10) {
+                    shift = 0;
+                    trigger = 1;
+                  } else {
+                    trigger = totTermCount.get()/10;
+                    shift = random.nextInt(trigger);
+                  }
+                  while(System.currentTimeMillis() < searchStopTime) {
+                    Term term = termEnum.term();
+                    if (term == null) {
+                      if (seenTermCount < 10) {
+                        break;
+                      }
+                      totTermCount.set(seenTermCount);
+                      seenTermCount = 0;
+                      trigger = totTermCount.get()/10;
+                      //System.out.println("trigger " + trigger);
+                      shift = random.nextInt(trigger);
+                      termEnum = s.getIndexReader().terms(new Term("body", ""));
+                      continue;
+                    }
+                    seenTermCount++;
+                    // search 10 terms
+                    if (trigger == 0) {
+                      trigger = 1;
+                    }
+                    if ((seenTermCount + shift) % trigger == 0) {
+                      //if (VERBOSE) {
+                      //System.out.println(Thread.currentThread().getName() + " now search body:" + term.utf8ToString());
+                      //}
+                      totHits.addAndGet(runQuery(s, new TermQuery(term)));
+                    }
+                    termEnum.next();
+                  }
+                  if (VERBOSE) {
+                    System.out.println(Thread.currentThread().getName() + ": search done");
+                  }
+                } catch (Throwable t) {
+                  System.out.println(Thread.currentThread().getName() + ": hit exc");
+                  failed.set(true);
+                  t.printStackTrace(System.out);
+                  throw new RuntimeException(t);
+                }
+              }
+            };
+          searchThreads[thread].setDaemon(true);
+          searchThreads[thread].start();
+        }
+
+        for(int thread=0;thread<NUM_SEARCH_THREADS;thread++) {
+          searchThreads[thread].join();
+        }
+
+        if (VERBOSE) {
+          System.out.println("TEST: DONE search: totHits=" + totHits);
+        }
+      } else {
+        Thread.sleep(100);
+      }
+    }
+
+    es.shutdown();
+    es.awaitTermination(1, TimeUnit.SECONDS);
+
+    if (VERBOSE) {
+      System.out.println("TEST: all searching done [" + (System.currentTimeMillis()-t0) + " ms]");
+    }
+
+    //System.out.println("numDocs=" + r.numDocs() + " openDelFileCount=" + dir.openDeleteFileCount());
+    r.close();
+    final Set<String> openDeletedFiles = dir.getOpenDeletedFiles();
+    if (openDeletedFiles.size() > 0) {
+      System.out.println("OBD files: " + openDeletedFiles);
+    }
+    any |= openDeletedFiles.size() > 0;
+
+    assertFalse("saw non-zero open-but-deleted count", any);
+    if (VERBOSE) {
+      System.out.println("TEST: now join");
+    }
+    for(int thread=0;thread<NUM_INDEX_THREADS;thread++) {
+      threads[thread].join();
+    }
+    if (VERBOSE) {
+      System.out.println("TEST: done join [" + (System.currentTimeMillis()-t0) + " ms]; addCount=" + addCount + " delCount=" + delCount);
+    }
+
+    final IndexReader r2 = writer.getReader();
+    final IndexSearcher s = newSearcher(r2);
+    boolean doFail = false;
+    for(String id : delIDs) {
+      final TopDocs hits = s.search(new TermQuery(new Term("docid", id)), 1);
+      if (hits.totalHits != 0) {
+        System.out.println("doc id=" + id + " is supposed to be deleted, but got docID=" + hits.scoreDocs[0].doc);
+        doFail = true;
+      }
+    }
+
+    // Make sure each group of sub-docs are still in docID order:
+    for(SubDocs subDocs : allSubDocs) {
+      if (!subDocs.deleted) {
+        // We sort by relevance but the scores should be identical so sort falls back to by docID:
+        TopDocs hits = s.search(new TermQuery(new Term("packID", subDocs.packID)), 20);
+        assertEquals(subDocs.subIDs.size(), hits.totalHits);
+        int lastDocID = -1;
+        int startDocID = -1;
+        for(ScoreDoc scoreDoc : hits.scoreDocs) {
+          final int docID = scoreDoc.doc;
+          if (lastDocID != -1) {
+            assertEquals(1+lastDocID, docID);
+          } else {
+            startDocID = docID;
+          }
+          lastDocID = docID;
+          final Document doc = s.doc(docID);
+          assertEquals(subDocs.packID, doc.get("packID"));
+        }
+
+        lastDocID = startDocID - 1;
+        for(String subID : subDocs.subIDs) {
+          hits = s.search(new TermQuery(new Term("docid", subID)), 1);
+          assertEquals(1, hits.totalHits);
+          final int docID = hits.scoreDocs[0].doc;
+          if (lastDocID != -1) {
+            assertEquals(1+lastDocID, docID);
+          }
+          lastDocID = docID;
+        }          
+      } else {
+        for(String subID : subDocs.subIDs) {
+          assertEquals(0, s.search(new TermQuery(new Term("docid", subID)), 1).totalHits);
+        }
+      }
+    }
+    
+    final int endID = Integer.parseInt(docs.nextDoc().get("docid"));
+    for(int id=0;id<endID;id++) {
+      String stringID = ""+id;
+      if (!delIDs.contains(stringID)) {
+        final TopDocs hits = s.search(new TermQuery(new Term("docid", stringID)), 1);
+        if (hits.totalHits != 1) {
+          System.out.println("doc id=" + stringID + " is not supposed to be deleted, but got hitCount=" + hits.totalHits);
+          doFail = true;
+        }
+      }
+    }
+    assertFalse(doFail);
+    
+    assertEquals("index=" + writer.segString() + " addCount=" + addCount + " delCount=" + delCount, addCount.get() - delCount.get(), r2.numDocs());
+    r2.close();
+
+    writer.commit();
+    assertEquals("index=" + writer.segString() + " addCount=" + addCount + " delCount=" + delCount, addCount.get() - delCount.get(), writer.numDocs());
+
+    assertFalse(writer.anyNonBulkMerges);
+    writer.close(false);
+    _TestUtil.checkIndex(dir);
+    s.close();
+    dir.close();
+    _TestUtil.rmDir(tempDir);
+    docs.close();
+    if (VERBOSE) {
+      System.out.println("TEST: done [" + (System.currentTimeMillis()-t0) + " ms]");
+    }
+  }
+
+  private int runQuery(IndexSearcher s, Query q) throws Exception {
+    s.search(q, 10);
+    return s.search(q, null, 10, new Sort(new SortField("title", SortField.STRING))).totalHits;
+  }
+
+  private void smokeTestReader(IndexReader r) throws Exception {
+    IndexSearcher s = newSearcher(r);
+    runQuery(s, new TermQuery(new Term("body", "united")));
+    runQuery(s, new TermQuery(new Term("titleTokenized", "states")));
+    PhraseQuery pq = new PhraseQuery();
+    pq.add(new Term("body", "united"));
+    pq.add(new Term("body", "states"));
+    runQuery(s, pq);
+    s.close();
+  }
+}