--- /dev/null
+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 org.apache.lucene.analysis.MockAnalyzer;
+import org.apache.lucene.document.*;
+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 {
+ final Directory dir = newDirectory();
+
+ final LineFileDocs docs = new LineFileDocs(random);
+
+ final IndexWriter w = new IndexWriter(dir, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)));
+ w.setInfoStream(VERBOSE ? System.out : null);
+ final int SIZE = atLeast(TEST_NIGHTLY ? 100 : 20);
+ int id = 0;
+ IndexReader r = null;
+ final int numUpdates = (int) (SIZE * (2+random.nextDouble()));
+ for(int docIter=0;docIter<numUpdates;docIter++) {
+ final Document doc = docs.nextDoc();
+ final String myID = ""+id;
+ if (id == SIZE-1) {
+ id = 0;
+ } else {
+ id++;
+ }
+ doc.getField("docid").setValue(myID);
+ w.updateDocument(new Term("docid", myID), doc);
+
+ if (docIter >= SIZE && random.nextInt(50) == 17) {
+ if (r != null) {
+ r.close();
+ }
+ final boolean applyDeletions = random.nextBoolean();
+ r = w.getReader(applyDeletions);
+ assertTrue("applyDeletions=" + applyDeletions + " r.numDocs()=" + r.numDocs() + " vs SIZE=" + SIZE, !applyDeletions || r.numDocs() == SIZE);
+ }
+ }
+
+ if (r != null) {
+ r.close();
+ }
+
+ w.commit();
+ assertEquals(SIZE, w.numDocs());
+
+ w.close();
+ docs.close();
+
+ 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 = IndexReader.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 {
+ IndexReader open = null;
+ for (int i = 0; i < num; i++) {
+ Document doc = new Document();// docs.nextDoc();
+ doc.add(newField("id", "test", Field.Index.NOT_ANALYZED));
+ writer.updateDocument(new Term("id", "test"), doc);
+ if (random.nextInt(3) == 0) {
+ if (open == null) {
+ open = IndexReader.open(writer, true);
+ }
+ IndexReader reader = IndexReader.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);
+ }
+ }
+ }
+}