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+/**
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+ * Licensed to the Apache Software Foundation (ASF) under one
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+ * or more contributor license agreements. See the NOTICE file
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+ * distributed with this work for additional information
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+ * regarding copyright ownership. The ASF licenses this file
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+ * to you under the Apache License, Version 2.0 (the
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+ * "License"); you may not use this file except in compliance
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+ * with the License. You may obtain a copy of the License at
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+ *
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+ * http://www.apache.org/licenses/LICENSE-2.0
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+ *
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+ * Unless required by applicable law or agreed to in writing, software
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+ * distributed under the License is distributed on an "AS IS" BASIS,
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+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ * See the License for the specific language governing permissions and
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+ * limitations under the License.
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+ */
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+package org.apache.hadoop.mapred;
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+
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+import java.io.File;
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+import java.io.IOException;
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+
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+import junit.framework.TestCase;
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+
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+import org.apache.commons.logging.Log;
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+import org.apache.commons.logging.LogFactory;
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+import org.apache.hadoop.conf.Configuration;
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+import org.apache.hadoop.examples.SleepJob;
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+import org.apache.hadoop.fs.FileSystem;
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+import org.apache.hadoop.hdfs.MiniDFSCluster;
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+import org.apache.hadoop.util.ToolRunner;
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+
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+public class TestJobDirCleanup extends TestCase {
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+ //The testcase brings up a cluster with many trackers, and
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+ //runs a job with a single map and many reduces. The check is
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+ //to see whether the job directories are cleaned up at the
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+ //end of the job (indirectly testing whether all tasktrackers
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+ //got a KillJobAction).
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+ private static final Log LOG =
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+ LogFactory.getLog(TestEmptyJobWithDFS.class.getName());
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+ private void runSleepJob(JobConf conf) throws Exception {
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+ String[] args = { "-m", "1", "-r", "10", "-mt", "1000", "-rt", "10000" };
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+ ToolRunner.run(conf, new SleepJob(), args);
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+ }
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+ public void testJobDirCleanup() throws IOException {
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+ String namenode = null;
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+ MiniDFSCluster dfs = null;
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+ MiniMRCluster mr = null;
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+ FileSystem fileSys = null;
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+ try {
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+ final int taskTrackers = 10;
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+ final int jobTrackerPort = 60050;
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+ Configuration conf = new Configuration();
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+ JobConf mrConf = new JobConf();
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+ mrConf.set("mapred.tasktracker.reduce.tasks.maximum", "1");
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+ dfs = new MiniDFSCluster(conf, 1, true, null);
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+ fileSys = dfs.getFileSystem();
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+ namenode = fileSys.getUri().toString();
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+ mr = new MiniMRCluster(10, namenode, 3,
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+ null, null, mrConf);
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+ final String jobTrackerName = "localhost:" + mr.getJobTrackerPort();
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+ JobConf jobConf = mr.createJobConf();
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+ runSleepJob(jobConf);
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+ for(int i=0; i < taskTrackers; ++i) {
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+ String jobDirStr = mr.getTaskTrackerLocalDir(i)+
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+ "/taskTracker/jobcache";
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+ File jobDir = new File(jobDirStr);
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+ String[] contents = jobDir.list();
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+ while (contents.length > 0) {
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+ try {
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+ Thread.sleep(1000);
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+ LOG.warn(jobDir +" not empty yet");
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+ contents = jobDir.list();
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+ } catch (InterruptedException ie){}
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+ }
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+ }
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+ } catch (Exception ee){
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+ } finally {
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+ if (fileSys != null) { fileSys.close(); }
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+ if (dfs != null) { dfs.shutdown(); }
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+ if (mr != null) { mr.shutdown(); }
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+ }
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+ }
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+}
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+
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+
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