/**
* 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.jobcontrol;
import static org.mockito.Mockito.*;
import java.util.ArrayList;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.JobID;
/**
* This class performs unit test for Job/JobControl classes.
*
*/
public class TestJobControl extends junit.framework.TestCase {
/**
* This is a main function for testing JobControl class.
* It first cleans all the dirs it will use. Then it generates some random text
* data in TestJobControlData/indir. Then it creates 4 jobs:
* Job 1: copy data from indir to outdir_1
* Job 2: copy data from indir to outdir_2
* Job 3: copy data from outdir_1 and outdir_2 to outdir_3
* Job 4: copy data from outdir to outdir_4
* The jobs 1 and 2 have no dependency. The job 3 depends on jobs 1 and 2.
* The job 4 depends on job 3.
*
* Then it creates a JobControl object and add the 4 jobs to the JobControl object.
* Finally, it creates a thread to run the JobControl object and monitors/reports
* the job states.
*/
public static void doJobControlTest() throws Exception {
Configuration defaults = new Configuration();
FileSystem fs = FileSystem.get(defaults);
Path rootDataDir = new Path(System.getProperty("test.build.data", "."), "TestJobControlData");
Path indir = new Path(rootDataDir, "indir");
Path outdir_1 = new Path(rootDataDir, "outdir_1");
Path outdir_2 = new Path(rootDataDir, "outdir_2");
Path outdir_3 = new Path(rootDataDir, "outdir_3");
Path outdir_4 = new Path(rootDataDir, "outdir_4");
JobControlTestUtils.cleanData(fs, indir);
JobControlTestUtils.generateData(fs, indir);
JobControlTestUtils.cleanData(fs, outdir_1);
JobControlTestUtils.cleanData(fs, outdir_2);
JobControlTestUtils.cleanData(fs, outdir_3);
JobControlTestUtils.cleanData(fs, outdir_4);
ArrayList<Job> dependingJobs = null;
ArrayList<Path> inPaths_1 = new ArrayList<Path>();
inPaths_1.add(indir);
JobConf jobConf_1 = JobControlTestUtils.createCopyJob(inPaths_1, outdir_1);
Job job_1 = new Job(jobConf_1, dependingJobs);
ArrayList<Path> inPaths_2 = new ArrayList<Path>();
inPaths_2.add(indir);
JobConf jobConf_2 = JobControlTestUtils.createCopyJob(inPaths_2, outdir_2);
Job job_2 = new Job(jobConf_2, dependingJobs);
ArrayList<Path> inPaths_3 = new ArrayList<Path>();
inPaths_3.add(outdir_1);
inPaths_3.add(outdir_2);
JobConf jobConf_3 = JobControlTestUtils.createCopyJob(inPaths_3, outdir_3);
dependingJobs = new ArrayList<Job>();
dependingJobs.add(job_1);
dependingJobs.add(job_2);
Job job_3 = new Job(jobConf_3, dependingJobs);
ArrayList<Path> inPaths_4 = new ArrayList<Path>();
inPaths_4.add(outdir_3);
JobConf jobConf_4 = JobControlTestUtils.createCopyJob(inPaths_4, outdir_4);
dependingJobs = new ArrayList<Job>();
dependingJobs.add(job_3);
Job job_4 = new Job(jobConf_4, dependingJobs);
JobControl theControl = new JobControl("Test");
theControl.addJob(job_1);
theControl.addJob(job_2);
theControl.addJob(job_3);
theControl.addJob(job_4);
Thread theController = new Thread(theControl);
theController.start();
while (!theControl.allFinished()) {
System.out.println("Jobs in waiting state: "
+ theControl.getWaitingJobs().size());
System.out.println("Jobs in ready state: "
+ theControl.getReadyJobs().size());
System.out.println("Jobs in running state: "
+ theControl.getRunningJobs().size());
System.out.println("Jobs in success state: "
+ theControl.getSuccessfulJobs().size());
System.out.println("Jobs in failed state: "
+ theControl.getFailedJobs().size());
System.out.println("\n");
try {
Thread.sleep(5000);
} catch (Exception e) {
}
}
System.out.println("Jobs are all done???");
System.out.println("Jobs in waiting state: "
+ theControl.getWaitingJobs().size());
System.out.println("Jobs in ready state: "
+ theControl.getReadyJobs().size());
System.out.println("Jobs in running state: "
+ theControl.getRunningJobs().size());
System.out.println("Jobs in success state: "
+ theControl.getSuccessfulJobs().size());
System.out.println("Jobs in failed state: "
+ theControl.getFailedJobs().size());
System.out.println("\n");
if (job_1.getState() != Job.FAILED &&
job_1.getState() != Job.DEPENDENT_FAILED &&
job_1.getState() != Job.SUCCESS) {
String states = "job_1: " + job_1.getState() + "\n";
throw new Exception("The state of job_1 is not in a complete state\n" + states);
}
if (job_2.getState() != Job.FAILED &&
job_2.getState() != Job.DEPENDENT_FAILED &&
job_2.getState() != Job.SUCCESS) {
String states = "job_2: " + job_2.getState() + "\n";
throw new Exception("The state of job_2 is not in a complete state\n" + states);
}
if (job_3.getState() != Job.FAILED &&
job_3.getState() != Job.DEPENDENT_FAILED &&
job_3.getState() != Job.SUCCESS) {
String states = "job_3: " + job_3.getState() + "\n";
throw new Exception("The state of job_3 is not in a complete state\n" + states);
}
if (job_4.getState() != Job.FAILED &&
job_4.getState() != Job.DEPENDENT_FAILED &&
job_4.getState() != Job.SUCCESS) {
String states = "job_4: " + job_4.getState() + "\n";
throw new Exception("The state of job_4 is not in a complete state\n" + states);
}
if (job_1.getState() == Job.FAILED ||
job_2.getState() == Job.FAILED ||
job_1.getState() == Job.DEPENDENT_FAILED ||
job_2.getState() == Job.DEPENDENT_FAILED) {
if (job_3.getState() != Job.DEPENDENT_FAILED) {
String states = "job_1: " + job_1.getState() + "\n";
states = "job_2: " + job_2.getState() + "\n";
states = "job_3: " + job_3.getState() + "\n";
states = "job_4: " + job_4.getState() + "\n";
throw new Exception("The states of jobs 1, 2, 3, 4 are not consistent\n" + states);
}
}
if (job_3.getState() == Job.FAILED ||
job_3.getState() == Job.DEPENDENT_FAILED) {
if (job_4.getState() != Job.DEPENDENT_FAILED) {
String states = "job_3: " + job_3.getState() + "\n";
states = "job_4: " + job_4.getState() + "\n";
throw new Exception("The states of jobs 3, 4 are not consistent\n" + states);
}
}
theControl.stop();
}
public void testJobControl() throws Exception {
doJobControlTest();
}
public void testGetAssignedJobId() throws Exception {
JobConf jc = new JobConf();
Job j = new Job(jc);
//Just make sure no exception is thrown
assertNull(j.getAssignedJobID());
org.apache.hadoop.mapreduce.Job mockjob = mock(org.apache.hadoop.mapreduce.Job.class);
org.apache.hadoop.mapreduce.JobID jid = new org.apache.hadoop.mapreduce.JobID("test",0);
when(mockjob.getJobID()).thenReturn(jid);
j.setJob(mockjob);
JobID expected = new JobID("test",0);
assertEquals(expected, j.getAssignedJobID());
verify(mockjob).getJobID();
}
public static void main(String[] args) {
TestJobControl test = new TestJobControl();
try {
test.testJobControl();
}
catch (Exception e) {
e.printStackTrace();
}
}
}