/*
* 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.
*/
package org.apache.lucene.index;
import java.io.IOException;
import java.util.Random;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.MockDirectoryWrapper;
import org.apache.lucene.store.NoLockFactory;
import org.apache.lucene.util.LuceneTestCase;
public class TestCrash extends LuceneTestCase {
private IndexWriter initIndex(Random random, boolean initialCommit) throws IOException {
return initIndex(random, newMockDirectory(random, NoLockFactory.INSTANCE), initialCommit, true);
}
private IndexWriter initIndex(Random random, MockDirectoryWrapper dir, boolean initialCommit, boolean commitOnClose) throws IOException {
IndexWriter writer = new IndexWriter(dir, newIndexWriterConfig(new MockAnalyzer(random))
.setMaxBufferedDocs(10).setMergeScheduler(new ConcurrentMergeScheduler()).setCommitOnClose(commitOnClose));
((ConcurrentMergeScheduler) writer.getConfig().getMergeScheduler()).setSuppressExceptions();
if (initialCommit) {
writer.commit();
}
Document doc = new Document();
doc.add(newTextField("content", "aaa", Field.Store.NO));
doc.add(newTextField("id", "0", Field.Store.NO));
for(int i=0;i<157;i++)
writer.addDocument(doc);
return writer;
}
private void crash(final IndexWriter writer) throws IOException {
final MockDirectoryWrapper dir = (MockDirectoryWrapper) writer.getDirectory();
ConcurrentMergeScheduler cms = (ConcurrentMergeScheduler) writer.getConfig().getMergeScheduler();
cms.sync();
dir.crash();
cms.sync();
dir.clearCrash();
}
public void testCrashWhileIndexing() throws IOException {
// This test relies on being able to open a reader before any commit
// happened, so we must create an initial commit just to allow that, but
// before any documents were added.
IndexWriter writer = initIndex(random(), true);
MockDirectoryWrapper dir = (MockDirectoryWrapper) writer.getDirectory();
// We create leftover files because merging could be
// running when we crash:
dir.setAssertNoUnrefencedFilesOnClose(false);
crash(writer);
IndexReader reader = DirectoryReader.open(dir);
assertTrue(reader.numDocs() < 157);
reader.close();
// Make a new dir, copying from the crashed dir, and
// open IW on it, to confirm IW "recovers" after a
// crash:
Directory dir2 = newDirectory(dir);
dir.close();
new RandomIndexWriter(random(), dir2).close();
dir2.close();
}
public void testWriterAfterCrash() throws IOException {
// This test relies on being able to open a reader before any commit
// happened, so we must create an initial commit just to allow that, but
// before any documents were added.
if (VERBOSE) {
System.out.println("TEST: initIndex");
}
IndexWriter writer = initIndex(random(), true);
if (VERBOSE) {
System.out.println("TEST: done initIndex");
}
MockDirectoryWrapper dir = (MockDirectoryWrapper) writer.getDirectory();
// We create leftover files because merging could be
// running / store files could be open when we crash:
dir.setAssertNoUnrefencedFilesOnClose(false);
if (VERBOSE) {
System.out.println("TEST: now crash");
}
crash(writer);
writer = initIndex(random(), dir, false, true);
writer.close();
IndexReader reader = DirectoryReader.open(dir);
assertTrue(reader.numDocs() < 314);
reader.close();
// Make a new dir, copying from the crashed dir, and
// open IW on it, to confirm IW "recovers" after a
// crash:
Directory dir2 = newDirectory(dir);
dir.close();
new RandomIndexWriter(random(), dir2).close();
dir2.close();
}
public void testCrashAfterReopen() throws IOException {
IndexWriter writer = initIndex(random(), false);
MockDirectoryWrapper dir = (MockDirectoryWrapper) writer.getDirectory();
// We create leftover files because merging could be
// running when we crash:
dir.setAssertNoUnrefencedFilesOnClose(false);
writer.close();
writer = initIndex(random(), dir, false, true);
assertEquals(314, writer.maxDoc());
crash(writer);
/*
System.out.println("\n\nTEST: open reader");
String[] l = dir.list();
Arrays.sort(l);
for(int i=0;i<l.length;i++)
System.out.println("file " + i + " = " + l[i] + " " +
dir.fileLength(l[i]) + " bytes");
*/
IndexReader reader = DirectoryReader.open(dir);
assertTrue(reader.numDocs() >= 157);
reader.close();
// Make a new dir, copying from the crashed dir, and
// open IW on it, to confirm IW "recovers" after a
// crash:
Directory dir2 = newDirectory(dir);
dir.close();
new RandomIndexWriter(random(), dir2).close();
dir2.close();
}
public void testCrashAfterClose() throws IOException {
IndexWriter writer = initIndex(random(), false);
MockDirectoryWrapper dir = (MockDirectoryWrapper) writer.getDirectory();
writer.close();
dir.crash();
/*
String[] l = dir.list();
Arrays.sort(l);
for(int i=0;i<l.length;i++)
System.out.println("file " + i + " = " + l[i] + " " + dir.fileLength(l[i]) + " bytes");
*/
IndexReader reader = DirectoryReader.open(dir);
assertEquals(157, reader.numDocs());
reader.close();
dir.close();
}
public void testCrashAfterCloseNoWait() throws IOException {
Random random = random();
MockDirectoryWrapper dir = newMockDirectory(random, NoLockFactory.INSTANCE);
IndexWriter writer = initIndex(random, dir, false, false);
try {
writer.commit();
} finally {
writer.close();
}
dir.crash();
/*
String[] l = dir.list();
Arrays.sort(l);
for(int i=0;i<l.length;i++)
System.out.println("file " + i + " = " + l[i] + " " + dir.fileLength(l[i]) + " bytes");
*/
IndexReader reader = DirectoryReader.open(dir);
assertEquals(157, reader.numDocs());
reader.close();
dir.close();
}
}