/**
* 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.hadoop.mapreduce.task.reduce;
import static org.mockito.Mockito.any;
import static org.mockito.Mockito.anyLong;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import java.io.IOException;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.UnsupportedFileSystemException;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.MapOutputFile;
import org.apache.hadoop.mapreduce.TaskAttemptID;
import org.apache.hadoop.mapreduce.TaskID;
import org.apache.hadoop.mapreduce.TaskType;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
public class TestMapOutput {
private static final FileContext lfs = getLfs();
private static final FileContext getLfs() {
try {
return FileContext.getLocalFSFileContext();
} catch (UnsupportedFileSystemException e) {
throw new RuntimeException(e);
}
}
private static final Path base =
lfs.makeQualified(new Path("target", TestMapOutput.class.getName()));
@BeforeClass
public static void createBase() throws IOException {
lfs.mkdir(base, null, true);
}
@AfterClass
public static void removeBase() throws IOException {
lfs.delete(base, true);
}
@SuppressWarnings("unchecked")
@Test
public void testDiskOutputBufferLeak() throws IOException {
MapOutputFile mof = mock(MapOutputFile.class);
when(mof.getInputFileForWrite(any(TaskID.class), anyLong())).thenReturn(
new Path(base, "mapoutputfile"));
TaskAttemptID mtid = new TaskAttemptID("0", 1, TaskType.MAP, 1, 1);
MergeManager<Text,Text> merger = mock(MergeManager.class);
MapOutput<Text,Text> odmo = new MapOutput<Text,Text>(
mtid, merger, 0, new JobConf(), null, 0, true, mof);
Assert.assertNotNull(odmo.getDisk());
odmo.commit();
Assert.assertNull(odmo.getDisk());
odmo = new MapOutput<Text,Text>(
mtid, merger, 0, new JobConf(), null, 0, true, mof);
Assert.assertNotNull(odmo.getDisk());
odmo.abort();
Assert.assertNull(odmo.getDisk());
}
}