/**
* 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.mapred;
import java.io.File;
import java.io.IOException;
import junit.framework.TestCase;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.examples.SleepJob;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.util.ToolRunner;
public class TestJobDirCleanup extends TestCase {
//The testcase brings up a cluster with many trackers, and
//runs a job with a single map and many reduces. The check is
//to see whether the job directories are cleaned up at the
//end of the job (indirectly testing whether all tasktrackers
//got a KillJobAction).
private static final Log LOG =
LogFactory.getLog(TestEmptyJob.class.getName());
private void runSleepJob(JobConf conf) throws Exception {
String[] args = { "-m", "1", "-r", "10", "-mt", "1000", "-rt", "10000" };
ToolRunner.run(conf, new SleepJob(), args);
}
public void testJobDirCleanup() throws IOException {
String namenode = null;
MiniDFSCluster dfs = null;
MiniMRCluster mr = null;
FileSystem fileSys = null;
try {
final int taskTrackers = 10;
final int jobTrackerPort = 60050;
Configuration conf = new Configuration();
JobConf mrConf = new JobConf();
mrConf.set("mapred.tasktracker.reduce.tasks.maximum", "1");
dfs = new MiniDFSCluster(conf, 1, true, null);
fileSys = dfs.getFileSystem();
namenode = fileSys.getUri().toString();
mr = new MiniMRCluster(10, namenode, 3,
null, null, mrConf);
final String jobTrackerName = "localhost:" + mr.getJobTrackerPort();
JobConf jobConf = mr.createJobConf();
runSleepJob(jobConf);
for(int i=0; i < taskTrackers; ++i) {
String jobDirStr = mr.getTaskTrackerLocalDir(i)+
"/taskTracker/jobcache";
File jobDir = new File(jobDirStr);
String[] contents = jobDir.list();
while (contents.length > 0) {
try {
Thread.sleep(1000);
LOG.warn(jobDir +" not empty yet");
contents = jobDir.list();
} catch (InterruptedException ie){}
}
}
} catch (Exception ee){
} finally {
if (fileSys != null) { fileSys.close(); }
if (dfs != null) { dfs.shutdown(); }
if (mr != null) { mr.shutdown(); }
}
}
}