| using Lucene.Net.Documents; |
| using Lucene.Net.Index.Extensions; |
| using NUnit.Framework; |
| using Assert = Lucene.Net.TestFramework.Assert; |
| |
| namespace Lucene.Net.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. |
| */ |
| |
| using Directory = Lucene.Net.Store.Directory; |
| using Document = Documents.Document; |
| using Field = Field; |
| using LuceneTestCase = Lucene.Net.Util.LuceneTestCase; |
| using RAMDirectory = Lucene.Net.Store.RAMDirectory; |
| using StringField = StringField; |
| |
| [TestFixture] |
| public class TestSizeBoundedForceMerge : LuceneTestCase |
| { |
| private void AddDocs(IndexWriter writer, int numDocs) |
| { |
| AddDocs(writer, numDocs, false); |
| } |
| |
| private void AddDocs(IndexWriter writer, int numDocs, bool withID) |
| { |
| 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 IndexWriterConfig NewWriterConfig() |
| { |
| IndexWriterConfig conf = NewIndexWriterConfig(TEST_VERSION_CURRENT, null); |
| conf.SetMaxBufferedDocs(IndexWriterConfig.DISABLE_AUTO_FLUSH); |
| conf.SetRAMBufferSizeMB(IndexWriterConfig.DEFAULT_RAM_BUFFER_SIZE_MB); |
| // prevent any merges by default. |
| conf.SetMergePolicy(NoMergePolicy.COMPOUND_FILES); |
| return conf; |
| } |
| |
| [Test] |
| public virtual void TestByteSizeLimit() |
| { |
| // 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); |
| const int numSegments = 15; |
| for (int i = 0; i < numSegments; i++) |
| { |
| int numDocs = i == 7 ? 30 : 1; |
| AddDocs(writer, numDocs); |
| } |
| writer.Dispose(); |
| |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| double min = sis.Info(0).GetSizeInBytes(); |
| |
| conf = NewWriterConfig(); |
| LogByteSizeMergePolicy lmp = new LogByteSizeMergePolicy(); |
| lmp.MaxMergeMBForForcedMerge = (min + 1) / (1 << 20); |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| // Should only be 3 segments in the index, because one of them exceeds the size limit |
| sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(3, sis.Count); |
| } |
| |
| [Test] |
| public virtual void TestNumDocsLimit() |
| { |
| // 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.Dispose(); |
| |
| conf = NewWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.MaxMergeDocs = 3; |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| // Should only be 3 segments in the index, because one of them exceeds the size limit |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(3, sis.Count); |
| } |
| |
| [Test] |
| public virtual void TestLastSegmentTooLarge() |
| { |
| 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.Dispose(); |
| |
| conf = NewWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.MaxMergeDocs = 3; |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(2, sis.Count); |
| } |
| |
| [Test] |
| public virtual void TestFirstSegmentTooLarge() |
| { |
| 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.Dispose(); |
| |
| conf = NewWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.MaxMergeDocs = 3; |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(2, sis.Count); |
| } |
| |
| [Test] |
| public virtual void TestAllSegmentsSmall() |
| { |
| 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.Dispose(); |
| |
| conf = NewWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.MaxMergeDocs = 3; |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(1, sis.Count); |
| } |
| |
| [Test] |
| public virtual void TestAllSegmentsLarge() |
| { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = NewWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| AddDocs(writer, 3); |
| AddDocs(writer, 3); |
| AddDocs(writer, 3); |
| |
| writer.Dispose(); |
| |
| conf = NewWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.MaxMergeDocs = 2; |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(3, sis.Count); |
| } |
| |
| [Test] |
| public virtual void TestOneLargeOneSmall() |
| { |
| 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.Dispose(); |
| |
| conf = NewWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.MaxMergeDocs = 3; |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(4, sis.Count); |
| } |
| |
| [Test] |
| public virtual void TestMergeFactor() |
| { |
| 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.Dispose(); |
| |
| conf = NewWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.MaxMergeDocs = 3; |
| lmp.MergeFactor = 2; |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| // Should only be 4 segments in the index, because of the merge factor and |
| // max merge docs settings. |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(4, sis.Count); |
| } |
| |
| [Test] |
| public virtual void TestSingleMergeableSegment() |
| { |
| 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.Dispose(); |
| |
| conf = NewWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.MaxMergeDocs = 3; |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| // Verify that the last segment does not have deletions. |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(3, sis.Count); |
| Assert.IsFalse(sis.Info(2).HasDeletions); |
| } |
| |
| [Test] |
| public virtual void TestSingleNonMergeableSegment() |
| { |
| Directory dir = new RAMDirectory(); |
| |
| IndexWriterConfig conf = NewWriterConfig(); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| |
| AddDocs(writer, 3, true); |
| |
| writer.Dispose(); |
| |
| conf = NewWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.MaxMergeDocs = 3; |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| // Verify that the last segment does not have deletions. |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(1, sis.Count); |
| } |
| |
| [Test] |
| public virtual void TestSingleMergeableTooLargeSegment() |
| { |
| 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.Dispose(); |
| |
| conf = NewWriterConfig(); |
| LogMergePolicy lmp = new LogDocMergePolicy(); |
| lmp.MaxMergeDocs = 2; |
| conf.SetMergePolicy(lmp); |
| |
| writer = new IndexWriter(dir, conf); |
| writer.ForceMerge(1); |
| writer.Dispose(); |
| |
| // Verify that the last segment does not have deletions. |
| SegmentInfos sis = new SegmentInfos(); |
| sis.Read(dir); |
| Assert.AreEqual(1, sis.Count); |
| Assert.IsTrue(sis.Info(0).HasDeletions); |
| } |
| } |
| } |