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R3704/hadoop-2.3.0-src/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/testjar/JobKillCommitter.java
2e9ad393f3f82.3.0_2.4.1

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JobKillCommitter.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 testjar;
import java.io.IOException;
import java.util.Iterator;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.FileOutputCommitter;
import org.apache.hadoop.mapred.JobContext;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Reducer;
public class JobKillCommitter {
/**
* The class provides a overrided implementation of output committer
* set up method, which causes the job to fail during set up.
*/
public static class CommitterWithFailSetup extends FileOutputCommitter {
@Override
public void setupJob(JobContext context) throws IOException {
throw new IOException();
}
}
/**
* The class provides a dummy implementation of outputcommitter
* which does nothing
*/
public static class CommitterWithNoError extends FileOutputCommitter {
@Override
public void setupJob(JobContext context) throws IOException {
}
@Override
public void commitJob(JobContext context) throws IOException {
}
}
/**
* The class provides a overrided implementation of commitJob which
* causes the clean up method to fail.
*/
public static class CommitterWithFailCleanup extends FileOutputCommitter {
@Override
public void commitJob(JobContext context) throws IOException {
throw new IOException();
}
}
/**
* The class is used provides a dummy implementation for mapper method which
* does nothing.
*/
public static class MapperPass extends Mapper<LongWritable, Text, Text, Text> {
public void map(LongWritable key, Text value, Context context)
throws IOException, InterruptedException {
}
}
/**
* The class provides a sleep implementation for mapper method.
*/
public static class MapperPassSleep extends
Mapper<LongWritable, Text, Text, Text> {
public void map(LongWritable key, Text value, Context context)
throws IOException, InterruptedException {
Thread.sleep(10000);
}
}
/**
* The class provides a way for the mapper function to fail by
* intentionally throwing an IOException
*/
public static class MapperFail extends Mapper<LongWritable, Text, Text, Text> {
public void map(LongWritable key, Text value, Context context)
throws IOException, InterruptedException {
throw new IOException();
}
}
/**
* The class provides a way for the reduce function to fail by
* intentionally throwing an IOException
*/
public static class ReducerFail extends Reducer<Text, Text, Text, Text> {
public void reduce(Text key, Iterator<Text> values, Context context)
throws IOException, InterruptedException {
throw new IOException();
}
}
/**
* The class provides a empty implementation of reducer method that
* does nothing
*/
public static class ReducerPass extends Reducer<Text, Text, Text, Text> {
public void reduce(Text key, Iterator<Text> values, Context context)
throws IOException, InterruptedException {
}
}
}
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