TestLocalJobControl.java
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- /**
- * 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 java.io.IOException;
- import java.util.ArrayList;
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
- import org.apache.hadoop.fs.FileSystem;
- import org.apache.hadoop.fs.Path;
- import org.apache.hadoop.mapred.HadoopTestCase;
- import org.apache.hadoop.mapred.JobConf;
- /**
- * HadoopTestCase that tests the local job runner.
- */
- public class TestLocalJobControl extends HadoopTestCase {
- public static final Log LOG = LogFactory.getLog(TestLocalJobControl.class
- .getName());
- /**
- * Initialises a new instance of this test case to use a Local MR cluster and
- * a local filesystem.
- *
- * @throws IOException If an error occurs initialising this object.
- */
- public TestLocalJobControl() throws IOException {
- super(HadoopTestCase.LOCAL_MR, HadoopTestCase.LOCAL_FS, 2, 2);
- }
- /**
- * 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 void testLocalJobControlDataCopy() throws Exception {
- FileSystem fs = FileSystem.get(createJobConf());
- Path rootDataDir = new Path(System.getProperty("test.build.data", "."),
- "TestLocalJobControlData");
- 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()) {
- LOG.debug("Jobs in waiting state: " + theControl.getWaitingJobs().size());
- LOG.debug("Jobs in ready state: " + theControl.getReadyJobs().size());
- LOG.debug("Jobs in running state: " + theControl.getRunningJobs().size());
- LOG.debug("Jobs in success state: "
- + theControl.getSuccessfulJobs().size());
- LOG.debug("Jobs in failed state: " + theControl.getFailedJobs().size());
- LOG.debug("n");
- try {
- Thread.sleep(5000);
- } catch (Exception e) {
- }
- }
- assertEquals("Some jobs failed", 0, theControl.getFailedJobs().size());
- theControl.stop();
- }
- }