TestJobDirCleanup.java
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- /**
- * 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(TestEmptyJobWithDFS.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(); }
- }
- }
- }