/**
* 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;
import java.io.*;
import junit.framework.TestCase;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.mapred.MRSharedCaching.TestResult;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* A JUnit test to test caching with DFS
*
*/
public class TestMiniMRDFSSharedCaching extends TestCase {
private static final Log LOG = LogFactory.getLog(TestMiniMRDFSSharedCaching.class);
public void testWithDFS() throws Throwable {
MiniMRCluster mr = null;
MiniDFSCluster dfs = null;
FileSystem fileSys = null;
try {
JobConf conf = new JobConf();
conf.set("fs.hdfs.impl",
"org.apache.hadoop.hdfs.ChecksumDistributedFileSystem");
dfs = new MiniDFSCluster(conf, 1, true, null);
fileSys = dfs.getFileSystem();
mr = new MiniMRCluster(2, fileSys.getName(), 4);
TestResult ret = MRSharedCaching.launchMRCache("/testing/wc/input",
"/testing/wc/output",
"/cachedir",
mr.createJobConf(),
"The quick brown fox\nhas many silly\n"
+ "red fox sox\n", false);
LOG.info ("Finished Job1");
assertTrue("Archives not matching", ret.isOutputOk);
mr.shutdown();
mr = new MiniMRCluster(2, fileSys.getName(), 4);
JobConf jConf = mr.createJobConf();
JobClient jc = new JobClient(jConf);
UtilsForTests.waitForJobTracker(jc);
ret = MRSharedCaching.launchMRCache("/testing/wc/input",
"/testing/wc/output",
"/cachedir",
jConf,
"The quick brown fox\nhas many silly\n"
+ "red fox sox\n", true);
LOG.info ("Finished Job2");
assertTrue("Symlinks not working", ret.isOutputOk);
ret = MRSharedCaching.launchMRCache2("/testing/wc/input",
"/testing/wc/output",
"/cachedir",
mr.createJobConf(),
"The quick brown fox\nhas many silly\n"
+ "red fox sox\n");
LOG.info ("Finished Job3");
assertTrue("Duplicate filenames", ret.isOutputOk);
ret = MRSharedCaching.launchMRCache3("/testing/wc/input",
"/testing/wc/output",
"/cachedir",
mr.createJobConf(),
"The quick brown fox\nhas many silly\n"
+ "red fox sox\n");
LOG.info ("Finished Job4");
assertTrue("Same file, different filename", ret.isOutputOk);
} catch (Throwable t) {
t.printStackTrace();
throw t;
} finally {
if (fileSys != null) {
fileSys.close();
}
if (dfs != null) {
dfs.shutdown();
}
if (mr != null) {
mr.shutdown();
}
}
}
public static void main(String[] argv) throws Throwable {
TestMiniMRDFSSharedCaching td = new TestMiniMRDFSSharedCaching();
td.testWithDFS();
}
}