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* 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
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package org.apache.hadoop.mapred;
import junit.framework.TestCase;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.examples.WordCount;
import org.apache.hadoop.fs.*;
import org.apache.hadoop.util.ToolRunner;
import org.apache.hadoop.hdfs.MiniDFSCluster;
public class TestCustomOutputCommitter extends TestCase {
static final Path input = new Path("/test/input/");
static final Path output = new Path("/test/output");
public void testCommitter() throws Exception {
MiniDFSCluster dfs = null;
MiniMRCluster mr = null;
FileSystem fs = null;
Path testFile = new Path(input, "testfile");
try {
Configuration conf = new Configuration();
//start the mini mr and dfs cluster.
dfs = new MiniDFSCluster(conf, 2 , true, null);
fs = dfs.getFileSystem();
FSDataOutputStream stream = fs.create(testFile);
stream.write("teststring".getBytes());
stream.close();
mr = new MiniMRCluster(2, fs.getUri().toString(), 1);
String[] args = new String[6];
args[0] = "-libjars";
// the testjob.jar as a temporary jar file
// holding custom output committer
args[1] = "build/test/testjar/testjob.jar";
args[2] = "-D";
args[3] = "mapred.output.committer.class=testjar.CustomOutputCommitter";
args[4] = input.toString();
args[5] = output.toString();
JobConf jobConf = mr.createJobConf();
int ret = ToolRunner.run(jobConf, new WordCount(), args);
assertTrue("not failed ", ret == 0);
} finally {
if (dfs != null) {dfs.shutdown();};
if (mr != null) {mr.shutdown();};
}
}
}