| package org.apache.lucene.index; |
| |
| import java.io.IOException; |
| import java.util.Iterator; |
| |
| import org.apache.lucene.analysis.MockAnalyzer; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.document.Field.Index; |
| import org.apache.lucene.document.Field.Store; |
| import org.apache.lucene.document.Field.TermVector; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.util.LuceneTestCase; |
| import org.apache.lucene.util._TestUtil; |
| |
| /** |
| * 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. |
| */ |
| |
| public class TestSegmentInfo extends LuceneTestCase { |
| |
| public void testSizeInBytesCache() throws Exception { |
| Directory dir = newDirectory(); |
| IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)).setMergePolicy(newLogMergePolicy()); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| Document doc = new Document(); |
| doc.add(new Field("a", "value", Store.YES, Index.ANALYZED)); |
| writer.addDocument(doc); |
| writer.close(); |
| |
| SegmentInfos sis = new SegmentInfos(); |
| sis.read(dir); |
| SegmentInfo si = sis.info(0); |
| long sizeInBytesNoStore = si.sizeInBytes(false); |
| long sizeInBytesWithStore = si.sizeInBytes(true); |
| assertTrue("sizeInBytesNoStore=" + sizeInBytesNoStore + " sizeInBytesWithStore=" + sizeInBytesWithStore, sizeInBytesWithStore > sizeInBytesNoStore); |
| dir.close(); |
| } |
| |
| // LUCENE-2584: calling files() by multiple threads could lead to ConcurrentModificationException |
| public void testFilesConcurrency() throws Exception { |
| Directory dir = newDirectory(); |
| // Create many files |
| IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)); |
| IndexWriter writer = new IndexWriter(dir, conf); |
| Document doc = new Document(); |
| doc.add(new Field("a", "b", Store.YES, Index.ANALYZED, TermVector.YES)); |
| writer.addDocument(doc); |
| writer.close(); |
| |
| SegmentInfos sis = new SegmentInfos(); |
| sis.read(dir); |
| final SegmentInfo si = sis.info(0); |
| Thread[] threads = new Thread[_TestUtil.nextInt(random, 2, 5)]; |
| for (int i = 0; i < threads.length; i++) { |
| threads[i] = new Thread() { |
| @Override |
| public void run() { |
| try { |
| // Verify that files() does not throw an exception and that the |
| // iteration afterwards succeeds. |
| Iterator<String> iter = si.files().iterator(); |
| while (iter.hasNext()) iter.next(); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| }; |
| } |
| |
| for (Thread t : threads) t.start(); |
| for (Thread t : threads) t.join(); |
| |
| dir.close(); |
| } |
| |
| } |