TestIndexWriterMergePolicypublic class TestIndexWriterMergePolicy extends TestCase | 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
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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,
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See the License for the specific language governing permissions and
limitations under the License. |
| Methods Summary |
|---|
| private void | addDoc(org.apache.lucene.index.IndexWriter writer)
Document doc = new Document();
doc.add(new Field("content", "aaa", Field.Store.NO, Field.Index.TOKENIZED));
writer.addDocument(doc);
| | private void | checkInvariants(org.apache.lucene.index.IndexWriter writer)
int maxBufferedDocs = writer.getMaxBufferedDocs();
int mergeFactor = writer.getMergeFactor();
int maxMergeDocs = writer.getMaxMergeDocs();
int ramSegmentCount = writer.getRamSegmentCount();
assertTrue(ramSegmentCount < maxBufferedDocs);
int lowerBound = -1;
int upperBound = maxBufferedDocs;
int numSegments = 0;
int segmentCount = writer.getSegmentCount();
for (int i = segmentCount - 1; i >= 0; i--) {
int docCount = writer.getDocCount(i);
assertTrue(docCount > lowerBound);
if (docCount <= upperBound) {
numSegments++;
} else {
if (upperBound * mergeFactor <= maxMergeDocs) {
assertTrue(numSegments < mergeFactor);
}
do {
lowerBound = upperBound;
upperBound *= mergeFactor;
} while (docCount > upperBound);
numSegments = 1;
}
}
if (upperBound * mergeFactor <= maxMergeDocs) {
assertTrue(numSegments < mergeFactor);
}
String[] files = writer.getDirectory().list();
int segmentCfsCount = 0;
for (int i = 0; i < files.length; i++) {
if (files[i].endsWith(".cfs")) {
segmentCfsCount++;
}
}
assertEquals(segmentCount, segmentCfsCount);
| | private void | printSegmentDocCounts(org.apache.lucene.index.IndexWriter writer)
int segmentCount = writer.getSegmentCount();
System.out.println("" + segmentCount + " segments total");
for (int i = 0; i < segmentCount; i++) {
System.out.println(" segment " + i + " has " + writer.getDocCount(i)
+ " docs");
}
| | public void | testForceFlush()
Directory dir = new RAMDirectory();
IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), true);
writer.setMaxBufferedDocs(10);
writer.setMergeFactor(10);
for (int i = 0; i < 100; i++) {
addDoc(writer);
writer.close();
writer = new IndexWriter(dir, new WhitespaceAnalyzer(), false);
writer.setMaxBufferedDocs(10);
writer.setMergeFactor(10);
checkInvariants(writer);
}
writer.close();
| | public void | testMaxBufferedDocsChange()
Directory dir = new RAMDirectory();
IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), true);
writer.setMaxBufferedDocs(101);
writer.setMergeFactor(101);
// leftmost* segment has 1 doc
// rightmost* segment has 100 docs
for (int i = 1; i <= 100; i++) {
for (int j = 0; j < i; j++) {
addDoc(writer);
checkInvariants(writer);
}
writer.close();
writer = new IndexWriter(dir, new WhitespaceAnalyzer(), false);
writer.setMaxBufferedDocs(101);
writer.setMergeFactor(101);
}
writer.setMaxBufferedDocs(10);
writer.setMergeFactor(10);
// merge policy only fixes segments on levels where merges
// have been triggered, so check invariants after all adds
for (int i = 0; i < 100; i++) {
addDoc(writer);
}
checkInvariants(writer);
for (int i = 100; i < 1000; i++) {
addDoc(writer);
}
checkInvariants(writer);
writer.close();
| | public void | testMergeDocCount0()
Directory dir = new RAMDirectory();
IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), true);
writer.setMaxBufferedDocs(10);
writer.setMergeFactor(100);
for (int i = 0; i < 250; i++) {
addDoc(writer);
checkInvariants(writer);
}
writer.close();
IndexReader reader = IndexReader.open(dir);
reader.deleteDocuments(new Term("content", "aaa"));
reader.close();
writer = new IndexWriter(dir, new WhitespaceAnalyzer(), false);
writer.setMaxBufferedDocs(10);
writer.setMergeFactor(5);
// merge factor is changed, so check invariants after all adds
for (int i = 0; i < 10; i++) {
addDoc(writer);
}
checkInvariants(writer);
assertEquals(10, writer.docCount());
writer.close();
| | public void | testMergeFactorChange()
Directory dir = new RAMDirectory();
IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), true);
writer.setMaxBufferedDocs(10);
writer.setMergeFactor(100);
for (int i = 0; i < 250; i++) {
addDoc(writer);
checkInvariants(writer);
}
writer.setMergeFactor(5);
// merge policy only fixes segments on levels where merges
// have been triggered, so check invariants after all adds
for (int i = 0; i < 10; i++) {
addDoc(writer);
}
checkInvariants(writer);
writer.close();
| | public void | testNoOverMerge()
Directory dir = new RAMDirectory();
IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), true);
writer.setMaxBufferedDocs(10);
writer.setMergeFactor(10);
boolean noOverMerge = false;
for (int i = 0; i < 100; i++) {
addDoc(writer);
checkInvariants(writer);
if (writer.getRamSegmentCount() + writer.getSegmentCount() >= 18) {
noOverMerge = true;
}
}
assertTrue(noOverMerge);
writer.close();
| | public void | testNormalCase()
Directory dir = new RAMDirectory();
IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), true);
writer.setMaxBufferedDocs(10);
writer.setMergeFactor(10);
for (int i = 0; i < 100; i++) {
addDoc(writer);
checkInvariants(writer);
}
writer.close();
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