/*
* 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.solr.hadoop.hack;
import java.io.File;
import java.io.IOException;
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.mapreduce.Job;
import org.apache.hadoop.util.JarFinder;
/**
* A MiniMRCluster factory. In MR2, it provides a wrapper MiniMRClientCluster
* interface around the MiniMRYarnCluster. While in MR1, it provides such
* wrapper around MiniMRCluster. This factory should be used in tests to provide
* an easy migration of tests across MR1 and MR2.
*/
public class MiniMRClientClusterFactory {
public static MiniMRClientCluster create(Class<?> caller, int noOfNMs,
Configuration conf, File testWorkDir) throws IOException {
return create(caller, caller.getSimpleName(), noOfNMs, conf, testWorkDir);
}
public static MiniMRClientCluster create(Class<?> caller, String identifier,
int noOfNMs, Configuration conf, File testWorkDir) throws IOException {
if (conf == null) {
conf = new Configuration();
}
FileSystem fs = FileSystem.get(conf);
Path testRootDir = new Path(testWorkDir.getPath(), identifier + "-tmpDir")
.makeQualified(fs);
Path appJar = new Path(testRootDir, "MRAppJar.jar");
// Copy MRAppJar and make it private.
Path appMasterJar = new Path(MiniMRYarnCluster.APPJAR);
fs.copyFromLocalFile(appMasterJar, appJar);
fs.setPermission(appJar, new FsPermission("744"));
Job job = Job.getInstance(conf);
job.addFileToClassPath(appJar);
Path callerJar = new Path(JarFinder.getJar(caller));
Path remoteCallerJar = new Path(testRootDir, callerJar.getName());
fs.copyFromLocalFile(callerJar, remoteCallerJar);
fs.setPermission(remoteCallerJar, new FsPermission("744"));
job.addFileToClassPath(remoteCallerJar);
MiniMRYarnCluster miniMRYarnCluster;
try {
miniMRYarnCluster = new MiniMRYarnCluster(identifier,
noOfNMs, testWorkDir);
} catch (Exception e) {
throw new RuntimeException(e);
}
job.getConfiguration().set("minimrclientcluster.caller.name",
identifier);
job.getConfiguration().setInt("minimrclientcluster.nodemanagers.number",
noOfNMs);
miniMRYarnCluster.init(job.getConfiguration());
miniMRYarnCluster.start();
return new MiniMRYarnClusterAdapter(miniMRYarnCluster, testWorkDir);
}
}