1 package org.apache.lucene.index;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
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20 import java.io.IOException;
22 import org.apache.lucene.analysis.MockAnalyzer;
23 import org.apache.lucene.document.Document;
24 import org.apache.lucene.document.Field;
25 import org.apache.lucene.store.Directory;
26 import org.apache.lucene.store.MockDirectoryWrapper;
27 import org.apache.lucene.store.RAMDirectory;
28 import org.apache.lucene.util.English;
29 import org.apache.lucene.util.LuceneTestCase;
31 public class TestTransactions extends LuceneTestCase {
33 private static volatile boolean doFail;
35 private class RandomFailure extends MockDirectoryWrapper.Failure {
37 public void eval(MockDirectoryWrapper dir) throws IOException {
38 if (TestTransactions.doFail && random.nextInt() % 10 <= 3)
39 throw new IOException("now failing randomly but on purpose");
43 private static abstract class TimedThread extends Thread {
44 volatile boolean failed;
45 private static float RUN_TIME_MSEC = atLeast(500);
46 private TimedThread[] allThreads;
48 abstract public void doWork() throws Throwable;
50 TimedThread(TimedThread[] threads) {
51 this.allThreads = threads;
56 final long stopTime = System.currentTimeMillis() + (long) (RUN_TIME_MSEC);
60 if (anyErrors()) break;
62 } while (System.currentTimeMillis() < stopTime);
63 } catch (Throwable e) {
64 System.out.println(Thread.currentThread() + ": exc");
65 e.printStackTrace(System.out);
70 private boolean anyErrors() {
71 for(int i=0;i<allThreads.length;i++)
72 if (allThreads[i] != null && allThreads[i].failed)
78 private class IndexerThread extends TimedThread {
84 public IndexerThread(Object lock, Directory dir1, Directory dir2, TimedThread[] threads) {
92 public void doWork() throws Throwable {
94 IndexWriter writer1 = new IndexWriter(
96 newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)).
97 setMaxBufferedDocs(3).
98 setMergeScheduler(new ConcurrentMergeScheduler()).
99 setMergePolicy(newLogMergePolicy(2))
101 ((ConcurrentMergeScheduler) writer1.getConfig().getMergeScheduler()).setSuppressExceptions();
103 // Intentionally use different params so flush/merge
104 // happen @ different times
105 IndexWriter writer2 = new IndexWriter(
107 newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)).
108 setMaxBufferedDocs(2).
109 setMergeScheduler(new ConcurrentMergeScheduler()).
110 setMergePolicy(newLogMergePolicy(3))
112 ((ConcurrentMergeScheduler) writer2.getConfig().getMergeScheduler()).setSuppressExceptions();
117 TestTransactions.doFail = true;
121 writer1.prepareCommit();
122 } catch (Throwable t) {
128 writer2.prepareCommit();
129 } catch (Throwable t) {
139 TestTransactions.doFail = false;
146 public void update(IndexWriter writer) throws IOException {
148 for(int j=0; j<10; j++) {
149 Document d = new Document();
150 int n = random.nextInt();
151 d.add(newField("id", Integer.toString(nextID++), Field.Store.YES, Field.Index.NOT_ANALYZED));
152 d.add(newField("contents", English.intToEnglish(n), Field.Store.NO, Field.Index.ANALYZED));
153 writer.addDocument(d);
157 int deleteID = nextID-1;
158 for(int j=0; j<5; j++) {
159 writer.deleteDocuments(new Term("id", ""+deleteID));
165 private static class SearcherThread extends TimedThread {
170 public SearcherThread(Object lock, Directory dir1, Directory dir2, TimedThread[] threads) {
178 public void doWork() throws Throwable {
181 r1 = IndexReader.open(dir1, true);
182 r2 = IndexReader.open(dir2, true);
184 if (r1.numDocs() != r2.numDocs())
185 throw new RuntimeException("doc counts differ: r1=" + r1.numDocs() + " r2=" + r2.numDocs());
191 public void initIndex(Directory dir) throws Throwable {
192 IndexWriter writer = new IndexWriter(dir, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)));
193 for(int j=0; j<7; j++) {
194 Document d = new Document();
195 int n = random.nextInt();
196 d.add(newField("contents", English.intToEnglish(n), Field.Store.NO, Field.Index.ANALYZED));
197 writer.addDocument(d);
202 public void testTransactions() throws Throwable {
203 // we cant use non-ramdir on windows, because this test needs to double-write.
204 MockDirectoryWrapper dir1 = new MockDirectoryWrapper(random, new RAMDirectory());
205 MockDirectoryWrapper dir2 = new MockDirectoryWrapper(random, new RAMDirectory());
206 dir1.setPreventDoubleWrite(false);
207 dir2.setPreventDoubleWrite(false);
208 dir1.failOn(new RandomFailure());
209 dir2.failOn(new RandomFailure());
214 TimedThread[] threads = new TimedThread[3];
217 IndexerThread indexerThread = new IndexerThread(this, dir1, dir2, threads);
218 threads[numThread++] = indexerThread;
219 indexerThread.start();
221 SearcherThread searcherThread1 = new SearcherThread(this, dir1, dir2, threads);
222 threads[numThread++] = searcherThread1;
223 searcherThread1.start();
225 SearcherThread searcherThread2 = new SearcherThread(this, dir1, dir2, threads);
226 threads[numThread++] = searcherThread2;
227 searcherThread2.start();
229 for(int i=0;i<numThread;i++)
232 for(int i=0;i<numThread;i++)
233 assertTrue(!threads[i].failed);