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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* 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 java.io.File;
import java.io.FileOutputStream;
import junit.framework.TestCase;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.filecache.DistributedCache;
import org.apache.hadoop.fs.*;
import org.apache.hadoop.util.ToolRunner;
import org.apache.hadoop.hdfs.MiniDFSCluster;
/**
* check for the job submission options of
* -libjars -files -archives
*/
public class TestCommandLineJobSubmission extends TestCase {
// Input output paths for this..
// these are all dummy and does not test
// much in map reduce except for the command line
// params
static final Path input = new Path("/test/input/");
static final Path output = new Path("/test/output");
File buildDir = new File(System.getProperty("test.build.data", "/tmp"));
public void testJobShell() 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);
File thisbuildDir = new File(buildDir, "jobCommand");
assertTrue("create build dir", thisbuildDir.mkdirs());
File f = new File(thisbuildDir, "files_tmp");
FileOutputStream fstream = new FileOutputStream(f);
fstream.write("somestrings".getBytes());
fstream.close();
String[] args = new String[6];
args[0] = "-files";
args[1] = f.toString();
args[2] = "-libjars";
// the testjob.jar as a temporary jar file
// rather than creating its own
args[3] = "build/test/testjar/testjob.jar";
args[4] = input.toString();
args[5] = output.toString();
JobConf jobConf = mr.createJobConf();
//before running the job, verify that libjar is not in client classpath
assertTrue("libjar not in client classpath", loadLibJar(jobConf)==null);
int ret = ToolRunner.run(jobConf,
new testshell.ExternalMapReduce(), args);
//after running the job, verify that libjar is in the client classpath
assertTrue("libjar added to client classpath", loadLibJar(jobConf)!=null);
assertTrue("not failed ", ret != -1);
f.delete();
thisbuildDir.delete();
// test duplicate uris for options -files and -archives
testDuplicateURI(mr, dfs);
} finally {
if (dfs != null) {dfs.shutdown();};
if (mr != null) {mr.shutdown();};
}
}
private void testDuplicateURI(MiniMRCluster mr, MiniDFSCluster dfs)
throws Exception {
Configuration jobConf = mr.createJobConf();
FileSystem fs = dfs.getFileSystem();
Path dfsPath = new Path("/test/testjob.jar");
fs.copyFromLocalFile(new Path("build/test/testjar/testjob.jar"), dfsPath);
String url = fs.getDefaultUri(jobConf).toString() + dfsPath.toString();
String[] args = new String[6];
args[0] = "-files";
args[1] = url;
args[2] = "-archives";
args[3] = url;
args[4] = input.toString();
args[5] = output.toString();
Exception ex = null;
try {
int ret = ToolRunner
.run(jobConf, new testshell.ExternalMapReduce(), args);
} catch (Exception e) {
ex = e;
}
assertNotNull("No exception thrown", ex);
assertTrue("Exception is not InvalidJobConfException.",
ex instanceof InvalidJobConfException);
assertEquals("Wrong message for the exception", "The core URI, \"" + url
+ "\" is listed both in " + DistributedCache.CACHE_FILES + " and in "
+ DistributedCache.CACHE_ARCHIVES + " .", ex.getMessage());
}
@SuppressWarnings("unchecked")
private Class loadLibJar(JobConf jobConf) {
try {
return jobConf.getClassByName("testjar.ClassWordCount");
} catch (ClassNotFoundException e) {
return null;
}
}
}