/**
* 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 org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.mapred.UtilsForTests.FakeClock;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.server.tasktracker.Localizer;
import org.apache.hadoop.mapreduce.server.tasktracker.userlogs.*;
import static org.junit.Assert.*;
import org.junit.After;
import org.junit.Test;
public class TestUserLogCleanup {
private static String jtid = "test";
private static long ONE_HOUR = 1000 * 60 * 60;
private Localizer localizer;
private UserLogManager userLogManager;
private UserLogCleaner userLogCleaner;
private TaskTracker tt;
private FakeClock myClock;
private JobID jobid1 = new JobID(jtid, 1);
private JobID jobid2 = new JobID(jtid, 2);
private JobID jobid3 = new JobID(jtid, 3);
private JobID jobid4 = new JobID(jtid, 4);
private File foo = new File(TaskLog.getUserLogDir(), "foo");
private File bar = new File(TaskLog.getUserLogDir(), "bar");
public TestUserLogCleanup() throws IOException {
Configuration conf = new Configuration();
startTT(conf);
}
@After
public void tearDown() throws IOException {
FileUtil.fullyDelete(TaskLog.getUserLogDir());
}
private File localizeJob(JobID jobid) throws IOException {
File jobUserlog = TaskLog.getJobDir(jobid);
JobConf conf = new JobConf();
// localize job log directory
tt.initializeJobLogDir(jobid, conf);
assertTrue(jobUserlog + " directory is not created.", jobUserlog.exists());
return jobUserlog;
}
private void jobFinished(JobID jobid, int logRetainHours) {
JobCompletedEvent jce = new JobCompletedEvent(jobid, myClock.getTime(),
logRetainHours);
userLogManager.addLogEvent(jce);
}
private void startTT(Configuration conf) throws IOException {
myClock = new FakeClock(); // clock is reset.
tt = new TaskTracker();
tt.setConf(new JobConf(conf));
localizer = new Localizer(FileSystem.get(conf), conf
.getStrings(JobConf.MAPRED_LOCAL_DIR_PROPERTY),
new DefaultTaskController());
tt.setLocalizer(localizer);
userLogManager = new UtilsForTests.InLineUserLogManager(conf);
userLogCleaner = userLogManager.getUserLogCleaner();
userLogCleaner.setClock(myClock);
tt.setUserLogManager(userLogManager);
userLogManager.clearOldUserLogs(conf);
}
private void ttReinited() throws IOException {
Configuration conf = new Configuration();
conf.setInt(JobContext.USER_LOG_RETAIN_HOURS, 3);
userLogManager.clearOldUserLogs(conf);
}
private void ttRestarted() throws IOException {
Configuration conf = new Configuration();
conf.setInt(JobContext.USER_LOG_RETAIN_HOURS, 3);
startTT(conf);
}
/**
* Tests job user-log directory deletion.
*
* Adds two jobs for log deletion. One with one hour retain hours, other with
* two retain hours. After an hour,
* TaskLogCleanupThread.processCompletedJobs() call, makes sure job with 1hr
* retain hours is removed and other is retained. After one more hour, job
* with 2hr retain hours is also removed.
*
* @throws IOException
*/
@Test
public void testJobLogCleanup() throws IOException {
File jobUserlog1 = localizeJob(jobid1);
File jobUserlog2 = localizeJob(jobid2);
// add job user log directory for deletion, with 2 hours for deletion
jobFinished(jobid1, 2);
// add the job for deletion with one hour as retain hours
jobFinished(jobid2, 1);
// remove old logs and see jobid1 is not removed and jobid2 is removed
myClock.advance(ONE_HOUR);
userLogCleaner.processCompletedJobs();
assertTrue(jobUserlog1 + " got deleted", jobUserlog1.exists());
assertFalse(jobUserlog2 + " still exists.", jobUserlog2.exists());
myClock.advance(ONE_HOUR);
// remove old logs and see jobid1 is removed now
userLogCleaner.processCompletedJobs();
assertFalse(jobUserlog1 + " still exists.", jobUserlog1.exists());
}
/**
* Tests user-log directory cleanup on a TT re-init with 3 hours as log retain
* hours for tracker.
*
* Adds job1 deletion before the re-init with 2 hour retain hours. Adds job2
* for which there are no tasks/killJobAction after the re-init. Adds job3 for
* which there is localizeJob followed by killJobAction with 3 hours as retain
* hours. Adds job4 for which there are some tasks after the re-init.
*
* @throws IOException
*/
@Test
public void testUserLogCleanup() throws IOException {
File jobUserlog1 = localizeJob(jobid1);
File jobUserlog2 = localizeJob(jobid2);
File jobUserlog3 = localizeJob(jobid3);
File jobUserlog4 = localizeJob(jobid4);
// create a some files/dirs in userlog
foo.mkdirs();
bar.createNewFile();
// add the jobid1 for deletion with retainhours = 2
jobFinished(jobid1, 2);
// time is now 1.
myClock.advance(ONE_HOUR);
// mimic TaskTracker reinit
// re-init the tt with 3 hours as user log retain hours.
// This re-init clears the user log directory
// job directories will be added with 3 hours as retain hours.
// i.e. They will be deleted at time 4.
ttReinited();
assertFalse(foo.exists());
assertFalse(bar.exists());
assertTrue(jobUserlog1.exists());
assertTrue(jobUserlog2.exists());
assertTrue(jobUserlog3.exists());
assertTrue(jobUserlog4.exists());
myClock.advance(ONE_HOUR);
// time is now 2.
userLogCleaner.processCompletedJobs();
assertFalse(jobUserlog1.exists());
assertTrue(jobUserlog2.exists());
assertTrue(jobUserlog3.exists());
assertTrue(jobUserlog4.exists());
// mimic localizeJob followed KillJobAction for jobid3
// add the job for deletion with retainhours = 3.
// jobid3 should be deleted at time 5.
jobUserlog3 = localizeJob(jobid3);
jobFinished(jobid3, 3);
// mimic localizeJob for jobid4
jobUserlog4 = localizeJob(jobid4);
// do cleanup
myClock.advance(2 * ONE_HOUR);
// time is now 4.
userLogCleaner.processCompletedJobs();
// jobid2 will be deleted
assertFalse(jobUserlog1.exists());
assertFalse(jobUserlog2.exists());
assertTrue(jobUserlog3.exists());
assertTrue(jobUserlog4.exists());
myClock.advance(ONE_HOUR);
// time is now 5.
// do cleanup again
userLogCleaner.processCompletedJobs();
// jobid3 will be deleted
assertFalse(jobUserlog1.exists());
assertFalse(jobUserlog2.exists());
assertFalse(jobUserlog3.exists());
assertTrue(jobUserlog4.exists());
}
/**
* Tests user-log directory cleanup on a TT restart.
*
* Adds job1 deletion before the restart with 2 hour retain hours. Adds job2
* for which there are no tasks/killJobAction after the restart. Adds job3 for
* which there is localizeJob followed by killJobAction after the restart with
* 3 hours retain hours. Adds job4 for which there are some tasks after the
* restart.
*
* @throws IOException
*/
@Test
public void testUserLogCleanupAfterRestart() throws IOException {
File jobUserlog1 = localizeJob(jobid1);
File jobUserlog2 = localizeJob(jobid2);
File jobUserlog3 = localizeJob(jobid3);
File jobUserlog4 = localizeJob(jobid4);
// create a some files/dirs in userlog
foo.mkdirs();
bar.createNewFile();
// add the jobid1 for deletion with retain hours = 2
jobFinished(jobid1, 2);
// time is now 1.
myClock.advance(ONE_HOUR);
// Mimic the TaskTracker restart
// Restart the tt with 3 hours as user log retain hours.
// This restart clears the user log directory
// job directories will be added with 3 hours as retain hours.
// i.e. They will be deleted at time 3 as clock will reset after the restart
ttRestarted();
assertFalse(foo.exists());
assertFalse(bar.exists());
assertTrue(jobUserlog1.exists());
assertTrue(jobUserlog2.exists());
assertTrue(jobUserlog3.exists());
assertTrue(jobUserlog4.exists());
myClock.advance(ONE_HOUR);
// time is now 1.
userLogCleaner.processCompletedJobs();
assertTrue(jobUserlog1.exists());
assertTrue(jobUserlog2.exists());
assertTrue(jobUserlog3.exists());
assertTrue(jobUserlog4.exists());
// mimic localizeJob followed KillJobAction for jobid3
// add the job for deletion with retainhours = 3.
// jobid3 should be deleted at time 4.
jobUserlog3 = localizeJob(jobid3);
jobFinished(jobid3, 3);
// mimic localizeJob for jobid4
jobUserlog4 = localizeJob(jobid4);
// do cleanup
myClock.advance(2 * ONE_HOUR);
// time is now 3.
userLogCleaner.processCompletedJobs();
// jobid1 and jobid2 will be deleted
assertFalse(jobUserlog1.exists());
assertFalse(jobUserlog2.exists());
assertTrue(jobUserlog3.exists());
assertTrue(jobUserlog4.exists());
myClock.advance(ONE_HOUR);
// time is now 4.
// do cleanup again
userLogCleaner.processCompletedJobs();
// jobid3 will be deleted
assertFalse(jobUserlog1.exists());
assertFalse(jobUserlog2.exists());
assertFalse(jobUserlog3.exists());
assertTrue(jobUserlog4.exists());
}
}