/**
* 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.DataOutputStream;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.mapreduce.test.system.JTProtocol;
import org.apache.hadoop.mapreduce.test.system.JobInfo;
import org.apache.hadoop.mapreduce.test.system.MRCluster;
import org.apache.hadoop.mapreduce.test.system.TaskInfo;
import org.apache.hadoop.mapreduce.test.system.JTClient;
import org.apache.hadoop.streaming.StreamJob;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.Assert;
public class TestTaskKillingOfStreamingJob {
private static final Log LOG = LogFactory
.getLog(TestTaskKillingOfStreamingJob.class);
private static MRCluster cluster;
private static Configuration conf = new Configuration();
private static Path inputDir = new Path("input");
private static Path outputDir = new Path("output");
private JTClient jtClient = null;
private JobClient client = null;
private JTProtocol wovenClient = null;
@BeforeClass
public static void before() throws Exception {
String [] expExcludeList = {"java.net.ConnectException",
"java.io.IOException"};
cluster = MRCluster.createCluster(conf);
cluster.setExcludeExpList(expExcludeList);
cluster.setUp();
conf = cluster.getJTClient().getProxy().getDaemonConf();
createInput(inputDir, conf);
}
@AfterClass
public static void after() throws Exception {
cleanup(inputDir, conf);
cleanup(outputDir, conf);
cluster.tearDown();
}
/**
* Set the sleep time for the tasks is 3 seconds and kill the task using sigkill.
* Verify whether task is killed after 3 seconds or not.
*/
@Test
public void testStatusOfKilledTaskWithSignalSleepTime()
throws IOException, Exception {
String runtimeArgs [] = {
"-D", "mapred.job.name=Numbers Sum",
"-D", "mapred.map.tasks=1",
"-D", "mapred.reduce.tasks=1",
"-D", "mapred.tasktracker.tasks.sleeptime-before-sigkill=3000" };
JobID jobId = getJobIdOfRunningStreamJob(runtimeArgs);
Assert.assertNotNull("Job ID not found for 1 min", jobId);
Assert.assertTrue("Job has not been started for 1 min.",
jtClient.isJobStarted(jobId));
TaskInfo taskInfo = getTaskInfoOfRunningStreamJob(jobId);
Assert.assertNotNull("TaskInfo is null",taskInfo);
Assert.assertTrue("Task has not been started for 1 min.",
jtClient.isTaskStarted(taskInfo));
JobInfo jInfo = wovenClient.getJobInfo(jobId);
RunningJob networkJob = client.getJob(jobId);
TaskID tID = TaskID.downgrade(taskInfo.getTaskID());
TaskAttemptID taskAttID = new TaskAttemptID(tID, 0);
networkJob.killTask(taskAttID, false);
int counter = 0;
while (counter++ < 60) {
if (taskInfo.getTaskStatus().length == 0) {
UtilsForTests.waitFor(1000);
taskInfo = wovenClient.getTaskInfo(taskInfo.getTaskID());
} else if (taskInfo.getTaskStatus()[0].getRunState() ==
TaskStatus.State.RUNNING) {
UtilsForTests.waitFor(1000);
taskInfo = wovenClient.getTaskInfo(taskInfo.getTaskID());
} else if (taskInfo.getTaskStatus()[0].getRunState() ==
TaskStatus.State.KILLED_UNCLEAN) {
UtilsForTests.waitFor(1000);
taskInfo = wovenClient.getTaskInfo(taskInfo.getTaskID());
} else {
break;
}
}
Assert.assertTrue("Task has been killed before sigkill " +
"sleep time of 3 secs.", counter > 3 && TaskStatus.State.KILLED ==
taskInfo.getTaskStatus()[0].getRunState());
LOG.info("Waiting till the job is completed...");
while (!jInfo.getStatus().isJobComplete()) {
UtilsForTests.waitFor(100);
jInfo = wovenClient.getJobInfo(jobId);
}
Assert.assertEquals("Job has not been succeeded.",
jInfo.getStatus().getRunState(), JobStatus.SUCCEEDED);
}
/**
* Set the maximum attempts for the maps and reducers are one.
* Failed the task and verify whether streaming job is failed or not.
*/
@Test
public void testStreamingJobStatusForFailedTask() throws IOException {
String runtimeArgs [] = {
"-D", "mapred.job.name=Numbers Sum",
"-D", "mapred.map.tasks=1",
"-D", "mapred.reduce.tasks=1",
"-D", "mapred.map.max.attempts=1",
"-D", "mapred.reduce.max.attempts=1"};
JobID jobId = getJobIdOfRunningStreamJob(runtimeArgs);
Assert.assertNotNull("Job ID not found for 1 min", jobId);
Assert.assertTrue("Job has not been started for 1 min.",
jtClient.isJobStarted(jobId));
TaskInfo taskInfo = getTaskInfoOfRunningStreamJob(jobId);
Assert.assertNotNull("TaskInfo is null",taskInfo);
Assert.assertTrue("Task has not been started for 1 min.",
jtClient.isTaskStarted(taskInfo));
JobInfo jInfo = wovenClient.getJobInfo(jobId);
RunningJob networkJob = client.getJob(jobId);
TaskID tID = TaskID.downgrade(taskInfo.getTaskID());
TaskAttemptID taskAttID = new TaskAttemptID(tID, 0);
networkJob.killTask(taskAttID, true);
int counter = 0;
while (counter++ < 60) {
if (taskInfo.getTaskStatus().length == 0) {
UtilsForTests.waitFor(1000);
taskInfo = wovenClient.getTaskInfo(taskInfo.getTaskID());
}else if (taskInfo.getTaskStatus()[0].getRunState() ==
TaskStatus.State.RUNNING) {
UtilsForTests.waitFor(1000);
taskInfo = wovenClient.getTaskInfo(taskInfo.getTaskID());
} else if (taskInfo.getTaskStatus()[0].getRunState() ==
TaskStatus.State.FAILED_UNCLEAN) {
UtilsForTests.waitFor(1000);
taskInfo = wovenClient.getTaskInfo(taskInfo.getTaskID());
} else {
break;
}
}
Assert.assertTrue("Task has not been Failed" , TaskStatus.State.FAILED ==
taskInfo.getTaskStatus()[0].getRunState());
LOG.info("Waiting till the job is completed...");
while (!jInfo.getStatus().isJobComplete()) {
UtilsForTests.waitFor(100);
jInfo = wovenClient.getJobInfo(jobId);
}
Assert.assertEquals("Job has not been failed",
jInfo.getStatus().getRunState(), JobStatus.FAILED);
}
private TaskInfo getTaskInfoOfRunningStreamJob(JobID jobId)
throws IOException {
TaskInfo taskInfo = null;
wovenClient = cluster.getJTClient().getProxy();
JobInfo jInfo = wovenClient.getJobInfo(jobId);
JobStatus jobStatus = jInfo.getStatus();
// Make sure that map is running and start progress 10%.
while (jobStatus.mapProgress() < 0.1f) {
UtilsForTests.waitFor(100);
jobStatus = wovenClient.getJobInfo(jobId).getStatus();
}
TaskInfo[] taskInfos = wovenClient.getTaskInfo(jobId);
for (TaskInfo taskinfo : taskInfos) {
if (!taskinfo.isSetupOrCleanup()) {
taskInfo = taskinfo;
}
}
return taskInfo;
}
private JobID getJobIdOfRunningStreamJob(String [] runtimeArgs)
throws IOException {
JobID jobId = null;
StreamJob streamJob = new StreamJob();
int counter = 0;
jtClient = cluster.getJTClient();
client = jtClient.getClient();
int totalJobs = client.getAllJobs().length;
String [] streamingArgs = generateArgs(runtimeArgs);
cleanup(outputDir, conf);
conf.setBoolean("mapreduce.job.complete.cancel.delegation.tokens", false);
final RunStreamingJob streamJobThread = new RunStreamingJob(conf,
streamJob,streamingArgs);
streamJobThread.start();
while (counter++ < 60) {
if (client.getAllJobs().length - totalJobs == 0) {
UtilsForTests.waitFor(1000);
} else if (client.getAllJobs()[0].getRunState() == JobStatus.RUNNING) {
jobId = client.getAllJobs()[0].getJobID();
break;
} else {
UtilsForTests.waitFor(1000);
}
}
return jobId;
}
private static void createInput(Path inDir, Configuration conf)
throws IOException {
FileSystem fs = inDir.getFileSystem(conf);
if (!fs.mkdirs(inDir)) {
throw new IOException("Failed to create the input directory:"
+ inDir.toString());
}
fs.setPermission(inDir, new FsPermission(FsAction.ALL,
FsAction.ALL, FsAction.ALL));
DataOutputStream file = fs.create(new Path(inDir, "data.txt"));
int i = 0;
while(i++ < 200) {
file.writeBytes(i + "\n");
}
file.close();
}
private static void cleanup(Path dir, Configuration conf)
throws IOException {
FileSystem fs = dir.getFileSystem(conf);
fs.delete(dir, true);
}
private String[] generateArgs(String [] runtimeArgs) {
String shellFile = System.getProperty("user.dir") +
"/src/test/system/scripts/StreamMapper.sh";
String [] otherArgs = new String[] {
"-input", inputDir.toString(),
"-output", outputDir.toString(),
"-mapper", "StreamMapper.sh",
"-reducer", "/bin/cat"
};
String fileArgs[] = new String[] {"-files", shellFile };
int size = fileArgs.length + runtimeArgs.length + otherArgs.length;
String args[]= new String[size];
int index = 0;
for (String fileArg : fileArgs) {
args[index++] = fileArg;
}
for (String runtimeArg : runtimeArgs) {
args[index++] = runtimeArg;
}
for (String otherArg : otherArgs) {
args[index++] = otherArg;
}
return args;
}
class RunStreamingJob extends Thread {
Configuration jobConf;
Tool tool;
String [] args;
public RunStreamingJob(Configuration jobConf, Tool tool, String [] args) {
this.jobConf = jobConf;
this.tool = tool;
this.args = args;
}
public void run() {
try {
runStreamingJob();
} catch(InterruptedException iexp) {
LOG.warn("Thread is interrupted:" + iexp.getMessage());
} catch(Exception exp) {
LOG.warn("Exception:" + exp.getMessage());
}
}
private void runStreamingJob() throws Exception{
ToolRunner.run(jobConf, tool, args);
}
}
}