/**
* 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.hive.hcatalog.templeton;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.commons.exec.ExecuteException;
import org.apache.hive.hcatalog.templeton.tool.TempletonUtils;
/**
* Submit a streaming job to the MapReduce queue. Really just a front
end to the JarDelegator.
*
* This is the backend of the mapreduce/streaming web service.
*/
public class StreamingDelegator extends LauncherDelegator {
public StreamingDelegator(AppConfig appConf) {
super(appConf);
}
public EnqueueBean run(String user, Map<String, Object> userArgs,
List<String> inputs, String inputreader, String output,
String mapper, String reducer, String combiner,
List<String> fileList,
String files, List<String> defines,
List<String> cmdenvs,
List<String> jarArgs,
String statusdir,
String callback,
String completedUrl,
boolean enableLog,
Boolean enableJobReconnect,
JobType jobType)
throws NotAuthorizedException, BadParam, BusyException, QueueException,
ExecuteException, IOException, InterruptedException, TooManyRequestsException {
List<String> args = makeArgs(inputs, inputreader, output, mapper, reducer, combiner,
fileList, cmdenvs, jarArgs);
JarDelegator d = new JarDelegator(appConf);
return d.run(user, userArgs,
appConf.streamingJar(), null,
null, files, args, defines,
statusdir, callback, false, completedUrl, enableLog, enableJobReconnect, jobType);
}
private List<String> makeArgs(List<String> inputs,
String inputreader,
String output,
String mapper,
String reducer,
String combiner,
List<String> fileList,
List<String> cmdenvs,
List<String> jarArgs)
throws BadParam
{
ArrayList<String> args = new ArrayList<String>();
for (String input : inputs) {
args.add("-input");
args.add(input);
}
args.add("-output");
args.add(output);
args.add("-mapper");
args.add(mapper);
args.add("-reducer");
args.add(reducer);
if (inputreader != null && !inputreader.isEmpty()) {
args.add("-inputreader");
args.add(inputreader);
}
if (TempletonUtils.isset(combiner)) {
args.add("-combiner");
args.add(combiner);
}
for (String f : fileList) {
args.add("-file");
args.add(f);
}
for (String e : cmdenvs) {
args.add("-cmdenv");
args.add(e);
}
for (String arg : jarArgs) {
args.add(arg);
}
return args;
}
}