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.util.Random;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.codecs.Codec;
import org.apache.lucene.codecs.memory.MemoryPostingsFormat;
import org.apache.lucene.document.*;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.*;
import org.apache.lucene.util.*;
import org.junit.Test;
public class TestRollingUpdates extends LuceneTestCase {
// Just updates the same set of N docs over and over, to
// stress out deletions
@Test
public void testRollingUpdates() throws Exception {
Random random = new Random(random().nextLong());
final BaseDirectoryWrapper dir = newDirectory();
final LineFileDocs docs = new LineFileDocs(random, defaultCodecSupportsDocValues());
//provider.register(new MemoryCodec());
if ( (!"Lucene3x".equals(Codec.getDefault().getName())) && random().nextBoolean()) {
Codec.setDefault(_TestUtil.alwaysPostingsFormat(new MemoryPostingsFormat(random().nextBoolean(), random.nextFloat())));
}
final IndexWriter w = new IndexWriter(dir, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())));
final int SIZE = atLeast(20);
int id = 0;
IndexReader r = null;
IndexSearcher s = null;
final int numUpdates = (int) (SIZE * (2+(TEST_NIGHTLY ? 200*random().nextDouble() : 5*random().nextDouble())));
if (VERBOSE) {
System.out.println("TEST: numUpdates=" + numUpdates);
}
int updateCount = 0;
// TODO: sometimes update ids not in order...
for(int docIter=0;docIter<numUpdates;docIter++) {
final Document doc = docs.nextDoc();
final String myID = ""+id;
if (id == SIZE-1) {
id = 0;
} else {
id++;
}
if (VERBOSE) {
System.out.println(" docIter=" + docIter + " id=" + id);
}
((Field) doc.getField("docid")).setStringValue(myID);
Term idTerm = new Term("docid", myID);
final boolean doUpdate;
if (s != null && updateCount < SIZE) {
TopDocs hits = s.search(new TermQuery(idTerm), 1);
assertEquals(1, hits.totalHits);
doUpdate = !w.tryDeleteDocument(r, hits.scoreDocs[0].doc);
if (VERBOSE) {
if (doUpdate) {
System.out.println(" tryDeleteDocument failed");
} else {
System.out.println(" tryDeleteDocument succeeded");
}
}
} else {
doUpdate = true;
if (VERBOSE) {
System.out.println(" no searcher: doUpdate=true");
}
}
updateCount++;
if (doUpdate) {
w.updateDocument(idTerm, doc);
} else {
w.addDocument(doc);
}
if (docIter >= SIZE && random().nextInt(50) == 17) {
if (r != null) {
r.close();
}
final boolean applyDeletions = random().nextBoolean();
if (VERBOSE) {
System.out.println("TEST: reopen applyDeletions=" + applyDeletions);
}
r = w.getReader(applyDeletions);
if (applyDeletions) {
s = new IndexSearcher(r);
} else {
s = null;
}
assertTrue("applyDeletions=" + applyDeletions + " r.numDocs()=" + r.numDocs() + " vs SIZE=" + SIZE, !applyDeletions || r.numDocs() == SIZE);
updateCount = 0;
}
}
if (r != null) {
r.close();
}
w.commit();
assertEquals(SIZE, w.numDocs());
w.close();
TestIndexWriter.assertNoUnreferencedFiles(dir, "leftover files after rolling updates");
docs.close();
// LUCENE-4455:
SegmentInfos infos = new SegmentInfos();
infos.read(dir);
long totalBytes = 0;
for(SegmentInfoPerCommit sipc : infos) {
totalBytes += sipc.sizeInBytes();
}
long totalBytes2 = 0;
for(String fileName : dir.listAll()) {
if (!fileName.startsWith(IndexFileNames.SEGMENTS)) {
totalBytes2 += dir.fileLength(fileName);
}
}
assertEquals(totalBytes2, totalBytes);
dir.close();
}
public void testUpdateSameDoc() throws Exception {
final Directory dir = newDirectory();
final LineFileDocs docs = new LineFileDocs(random());
for (int r = 0; r < 3; r++) {
final IndexWriter w = new IndexWriter(dir, newIndexWriterConfig(
TEST_VERSION_CURRENT, new MockAnalyzer(random())).setMaxBufferedDocs(2));
final int numUpdates = atLeast(20);
int numThreads = _TestUtil.nextInt(random(), 2, 6);
IndexingThread[] threads = new IndexingThread[numThreads];
for (int i = 0; i < numThreads; i++) {
threads[i] = new IndexingThread(docs, w, numUpdates);
threads[i].start();
}
for (int i = 0; i < numThreads; i++) {
threads[i].join();
}
w.close();
}
IndexReader open = DirectoryReader.open(dir);
assertEquals(1, open.numDocs());
open.close();
docs.close();
dir.close();
}
static class IndexingThread extends Thread {
final LineFileDocs docs;
final IndexWriter writer;
final int num;
public IndexingThread(LineFileDocs docs, IndexWriter writer, int num) {
super();
this.docs = docs;
this.writer = writer;
this.num = num;
}
public void run() {
try {
DirectoryReader open = null;
for (int i = 0; i < num; i++) {
Document doc = new Document();// docs.nextDoc();
doc.add(newStringField("id", "test", Field.Store.NO));
writer.updateDocument(new Term("id", "test"), doc);
if (random().nextInt(3) == 0) {
if (open == null) {
open = DirectoryReader.open(writer, true);
}
DirectoryReader reader = DirectoryReader.openIfChanged(open);
if (reader != null) {
open.close();
open = reader;
}
assertEquals("iter: " + i + " numDocs: "+ open.numDocs() + " del: " + open.numDeletedDocs() + " max: " + open.maxDoc(), 1, open.numDocs());
}
}
if (open != null) {
open.close();
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
}