| /* |
| * 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 org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.document.StringField; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.RAMDirectory; |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| public class TestSizeBoundedForceMerge extends LuceneTestCase { |
| |
| private void addDocs(IndexWriter writer, int numDocs) throws IOException { |
| addDocs(writer, numDocs, false); |
| } |
| |
| private void addDocs(IndexWriter writer, int numDocs, boolean withID) throws IOException { |
| for (int i = 0; i < numDocs; i++) { |
| Document doc = new Document(); |
| if (withID) { |
| doc.add(new StringField("id", "" + i, Field.Store.NO)); |
| } |
| writer.addDocument(doc); |
| } |
| writer.commit(); |
| } |
| |
| private static IndexWriterConfig newWriterConfig() { |
| IndexWriterConfig conf = newIndexWriterConfig(null); |
| conf.setMaxBufferedDocs(IndexWriterConfig.DISABLE_AUTO_FLUSH); |
| conf.setRAMBufferSizeMB(IndexWriterConfig.DEFAULT_RAM_BUFFER_SIZE_MB); |
| // prevent any merges by default. |
| conf.setMergePolicy(NoMergePolicy.INSTANCE); |
| return conf; |
| } |
| |
| public void testByteSizeLimit() throws Exception { |
| // tests that the max merge size constraint is applied during forceMerge. |
| Directory dir = new RAMDirectory(); |
| |
| // Prepare an index w/ several small segments and a large one. |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| final int numSegments = 15; |
| for (int i = 0; i < numSegments; i++) { |
| int numDocs = i == 7 ? 30 : 1; |
| addDocs(writer, numDocs); |
| } |
| writer.close(); |
| |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| double min = sis.info(0).sizeInBytes(); |
| |
| conf = newWriterConfig(); |
| LogByteSizeMergePolicy lmp = new LogByteSizeMergePolicy(); |
| lmp.setMaxMergeMBForForcedMerge(min / (1 << 20)); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| // Should only be 3 segments in the index, because one of them exceeds the size limit |
| sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(3, sis.size()); |
| } |
| |
| public void testNumDocsLimit() throws Exception { |
| // tests that the max merge docs constraint is applied during forceMerge. |
| Directory dir = new RAMDirectory(); |
| |
| // Prepare an index w/ several small segments and a large one. |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 5); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| |
| writer.close(); |
| |
| conf = newWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.setMaxMergeDocs(3); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| // Should only be 3 segments in the index, because one of them exceeds the size limit |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(3, sis.size()); |
| } |
| |
| public void testLastSegmentTooLarge() throws Exception { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 5); |
| |
| writer.close(); |
| |
| conf = newWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.setMaxMergeDocs(3); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(2, sis.size()); |
| } |
| |
| public void testFirstSegmentTooLarge() throws Exception { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| addDocs(writer, 5); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| |
| writer.close(); |
| |
| conf = newWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.setMaxMergeDocs(3); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(2, sis.size()); |
| } |
| |
| public void testAllSegmentsSmall() throws Exception { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| |
| writer.close(); |
| |
| conf = newWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.setMaxMergeDocs(3); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(1, sis.size()); |
| } |
| |
| public void testAllSegmentsLarge() throws Exception { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| |
| writer.close(); |
| |
| conf = newWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.setMaxMergeDocs(2); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(3, sis.size()); |
| } |
| |
| public void testOneLargeOneSmall() throws Exception { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| addDocs(writer, 3); |
| addDocs(writer, 5); |
| addDocs(writer, 3); |
| addDocs(writer, 5); |
| |
| writer.close(); |
| |
| conf = newWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.setMaxMergeDocs(3); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(4, sis.size()); |
| } |
| |
| public void testMergeFactor() throws Exception { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| addDocs(writer, 5); |
| addDocs(writer, 3); |
| addDocs(writer, 3); |
| |
| writer.close(); |
| |
| conf = newWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.setMaxMergeDocs(3); |
| lmp.setMergeFactor(2); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| // Should only be 4 segments in the index, because of the merge factor and |
| // max merge docs settings. |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(4, sis.size()); |
| } |
| |
| public void testSingleMergeableSegment() throws Exception { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| addDocs(writer, 3); |
| addDocs(writer, 5); |
| addDocs(writer, 3); |
| |
| // delete the last document, so that the last segment is merged. |
| writer.deleteDocuments(new Term("id", "10")); |
| writer.close(); |
| |
| conf = newWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.setMaxMergeDocs(3); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| // Verify that the last segment does not have deletions. |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(3, sis.size()); |
| assertFalse(sis.info(2).hasDeletions()); |
| } |
| |
| public void testSingleNonMergeableSegment() throws Exception { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| addDocs(writer, 3, true); |
| |
| writer.close(); |
| |
| conf = newWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.setMaxMergeDocs(3); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| // Verify that the last segment does not have deletions. |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(1, sis.size()); |
| } |
| |
| public void testSingleMergeableTooLargeSegment() throws Exception { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = newWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| addDocs(writer, 5, true); |
| |
| // delete the last document |
| |
| writer.deleteDocuments(new Term("id", "4")); |
| writer.close(); |
| |
| conf = newWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.setMaxMergeDocs(2); |
| conf.setMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.forceMerge(1); |
| writer.close(); |
| |
| // Verify that the last segment does not have deletions. |
| SegmentInfos sis = SegmentInfos.readLatestCommit(dir); |
| assertEquals(1, sis.size()); |
| assertTrue(sis.info(0).hasDeletions()); |
| } |
| |
| } |