| /** |
| * 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.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.mapreduce.server.tasktracker.TTConfig; |
| import org.apache.hadoop.mapreduce.Job; |
| import org.apache.hadoop.mapreduce.JobID; |
| import org.apache.hadoop.mapreduce.SleepJob; |
| import org.apache.hadoop.security.UserGroupInformation; |
| |
| 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 JobID runSleepJob(JobConf conf) throws Exception { |
| SleepJob sleep = new SleepJob(); |
| sleep.setConf(conf); |
| Job job = sleep.createJob(1, 10, 1000, 1, 10000, 1); |
| job.waitForCompletion(true); |
| return job.getJobID(); |
| } |
| |
| public void testJobDirCleanup() throws Exception { |
| String namenode = null; |
| MiniDFSCluster dfs = null; |
| MiniMRCluster mr = null; |
| FileSystem fileSys = null; |
| try { |
| final int taskTrackers = 10; |
| Configuration conf = new Configuration(); |
| JobConf mrConf = new JobConf(); |
| mrConf.set(TTConfig.TT_REDUCE_SLOTS, "1"); |
| dfs = new MiniDFSCluster(conf, 1, true, null); |
| fileSys = dfs.getFileSystem(); |
| namenode = fileSys.getUri().toString(); |
| mr = new MiniMRCluster(10, namenode, 3, |
| null, null, mrConf); |
| // make cleanup inline sothat validation of existence of these directories |
| // can be done |
| mr.setInlineCleanupThreads(); |
| |
| // run the sleep job |
| JobConf jobConf = mr.createJobConf(); |
| JobID jobid = runSleepJob(jobConf); |
| |
| // verify the job directories are cleaned up. |
| verifyJobDirCleanup(mr, taskTrackers, jobid); |
| } finally { |
| if (fileSys != null) { fileSys.close(); } |
| if (dfs != null) { dfs.shutdown(); } |
| if (mr != null) { mr.shutdown(); } |
| } |
| } |
| |
| static void verifyJobDirCleanup(MiniMRCluster mr, int numTT, JobID jobid) |
| throws IOException { |
| // wait till killJobAction is sent to all trackers. |
| // this loops waits atmost for 10 seconds |
| boolean sent = true; |
| for (int i = 0; i < 100; i++) { |
| sent = true; |
| for (int j = 0; j < numTT; j++) { |
| if (mr.getTaskTrackerRunner(j).getTaskTracker().getRunningJob( |
| org.apache.hadoop.mapred.JobID.downgrade(jobid)) != null) { |
| sent = false; |
| break; |
| } |
| } |
| if (!sent) { |
| UtilsForTests.waitFor(100); |
| } else { |
| break; |
| } |
| } |
| |
| assertTrue("KillJobAction not sent for all trackers", sent); |
| String user = UserGroupInformation.getCurrentUser().getShortUserName(); |
| String jobDirStr = TaskTracker.getLocalJobDir(user, jobid.toString()); |
| for(int i=0; i < numTT; ++i) { |
| for (String localDir : mr.getTaskTrackerLocalDirs(i)) { |
| File jobDir = new File(localDir, jobDirStr); |
| assertFalse(jobDir + " is not cleaned up.", jobDir.exists()); |
| } |
| } |
| } |
| } |
| |
| |