TestMROldApiJobs.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.mapreduce.v2;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import org.apache.hadoop.CustomOutputCommitter;
import org.apache.hadoop.FailMapper;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.FileInputFormat;
import org.apache.hadoop.mapred.FileOutputFormat;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.RunningJob;
import org.apache.hadoop.mapred.TextInputFormat;
import org.apache.hadoop.mapred.lib.IdentityMapper;
import org.apache.hadoop.mapred.lib.IdentityReducer;
import org.apache.hadoop.mapreduce.MRJobConfig;
import org.apache.hadoop.mapreduce.filecache.DistributedCache;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class TestMROldApiJobs {
private static final Logger LOG =
LoggerFactory.getLogger(TestMROldApiJobs.class);
protected static MiniMRYarnCluster mrCluster;
private static Configuration conf = new Configuration();
private static FileSystem localFs;
static {
try {
localFs = FileSystem.getLocal(conf);
} catch (IOException io) {
throw new RuntimeException("problem getting local fs", io);
}
}
@BeforeClass
public static void setup() throws IOException {
if (!(new File(MiniMRYarnCluster.APPJAR)).exists()) {
LOG.info("MRAppJar " + MiniMRYarnCluster.APPJAR
+ " not found. Not running test.");
return;
}
if (mrCluster == null) {
mrCluster = new MiniMRYarnCluster(TestMROldApiJobs.class.getName());
mrCluster.init(new Configuration());
mrCluster.start();
}
// TestMRJobs is for testing non-uberized operation only; see TestUberAM
// for corresponding uberized tests.
mrCluster.getConfig().setBoolean(MRJobConfig.JOB_UBERTASK_ENABLE, false);
// Copy MRAppJar and make it private. TODO: FIXME. This is a hack to
// workaround the absent public discache.
localFs.copyFromLocalFile(new Path(MiniMRYarnCluster.APPJAR), TestMRJobs.APP_JAR);
localFs.setPermission(TestMRJobs.APP_JAR, new FsPermission("700"));
}
@AfterClass
public static void tearDown() {
if (mrCluster != null) {
mrCluster.stop();
mrCluster = null;
}
}
@Test
public void testJobSucceed() throws IOException, InterruptedException,
ClassNotFoundException {
LOG.info("\n\n\nStarting testJobSucceed().");
if (!(new File(MiniMRYarnCluster.APPJAR)).exists()) {
LOG.info("MRAppJar " + MiniMRYarnCluster.APPJAR
+ " not found. Not running test.");
return;
}
JobConf conf = new JobConf(mrCluster.getConfig());
Path in = new Path(mrCluster.getTestWorkDir().getAbsolutePath(),
"in");
Path out = new Path(mrCluster.getTestWorkDir().getAbsolutePath(),
"out");
runJobSucceed(conf, in, out);
FileSystem fs = FileSystem.get(conf);
Assert.assertTrue(fs.exists(new Path(out, CustomOutputCommitter.JOB_SETUP_FILE_NAME)));
Assert.assertFalse(fs.exists(new Path(out, CustomOutputCommitter.JOB_ABORT_FILE_NAME)));
Assert.assertTrue(fs.exists(new Path(out, CustomOutputCommitter.JOB_COMMIT_FILE_NAME)));
Assert.assertTrue(fs.exists(new Path(out, CustomOutputCommitter.TASK_SETUP_FILE_NAME)));
Assert.assertFalse(fs.exists(new Path(out, CustomOutputCommitter.TASK_ABORT_FILE_NAME)));
Assert.assertTrue(fs.exists(new Path(out, CustomOutputCommitter.TASK_COMMIT_FILE_NAME)));
}
@Test
public void testJobFail() throws IOException, InterruptedException,
ClassNotFoundException {
LOG.info("\n\n\nStarting testJobFail().");
if (!(new File(MiniMRYarnCluster.APPJAR)).exists()) {
LOG.info("MRAppJar " + MiniMRYarnCluster.APPJAR
+ " not found. Not running test.");
return;
}
JobConf conf = new JobConf(mrCluster.getConfig());
Path in = new Path(mrCluster.getTestWorkDir().getAbsolutePath(),
"fail-in");
Path out = new Path(mrCluster.getTestWorkDir().getAbsolutePath(),
"fail-out");
runJobFail(conf, in, out);
FileSystem fs = FileSystem.get(conf);
Assert.assertTrue(fs.exists(new Path(out, CustomOutputCommitter.JOB_SETUP_FILE_NAME)));
Assert.assertTrue(fs.exists(new Path(out, CustomOutputCommitter.JOB_ABORT_FILE_NAME)));
Assert.assertFalse(fs.exists(new Path(out, CustomOutputCommitter.JOB_COMMIT_FILE_NAME)));
Assert.assertTrue(fs.exists(new Path(out, CustomOutputCommitter.TASK_SETUP_FILE_NAME)));
Assert.assertTrue(fs.exists(new Path(out, CustomOutputCommitter.TASK_ABORT_FILE_NAME)));
Assert.assertFalse(fs.exists(new Path(out, CustomOutputCommitter.TASK_COMMIT_FILE_NAME)));
}
//Run a job that will be failed and wait until it completes
public static void runJobFail(JobConf conf, Path inDir, Path outDir)
throws IOException, InterruptedException {
conf.setJobName("test-job-fail");
conf.setMapperClass(FailMapper.class);
conf.setJarByClass(FailMapper.class);
conf.setReducerClass(IdentityReducer.class);
conf.setMaxMapAttempts(1);
boolean success = runJob(conf, inDir, outDir, 1, 0);
Assert.assertFalse("Job expected to fail succeeded", success);
}
//Run a job that will be succeeded and wait until it completes
public static void runJobSucceed(JobConf conf, Path inDir, Path outDir)
throws IOException, InterruptedException {
conf.setJobName("test-job-succeed");
conf.setMapperClass(IdentityMapper.class);
//conf.setJar(new File(MiniMRYarnCluster.APPJAR).getAbsolutePath());
conf.setReducerClass(IdentityReducer.class);
boolean success = runJob(conf, inDir, outDir, 1 , 1);
Assert.assertTrue("Job expected to succeed failed", success);
}
static boolean runJob(JobConf conf, Path inDir, Path outDir, int numMaps,
int numReds) throws IOException, InterruptedException {
FileSystem fs = FileSystem.get(conf);
if (fs.exists(outDir)) {
fs.delete(outDir, true);
}
if (!fs.exists(inDir)) {
fs.mkdirs(inDir);
}
String input = "The quick brown fox\n" + "has many silly\n"
+ "red fox sox\n";
for (int i = 0; i < numMaps; ++i) {
DataOutputStream file = fs.create(new Path(inDir, "part-" + i));
file.writeBytes(input);
file.close();
}
DistributedCache.addFileToClassPath(TestMRJobs.APP_JAR, conf, fs);
conf.setOutputCommitter(CustomOutputCommitter.class);
conf.setInputFormat(TextInputFormat.class);
conf.setOutputKeyClass(LongWritable.class);
conf.setOutputValueClass(Text.class);
FileInputFormat.setInputPaths(conf, inDir);
FileOutputFormat.setOutputPath(conf, outDir);
conf.setNumMapTasks(numMaps);
conf.setNumReduceTasks(numReds);
JobClient jobClient = new JobClient(conf);
RunningJob job = jobClient.submitJob(conf);
return jobClient.monitorAndPrintJob(conf, job);
}
}