org.apache.hadoop.streaming.PipeCombiner Maven / Gradle / Ivy
/**
* 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.streaming;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import org.apache.hadoop.mapred.JobConf;
public class PipeCombiner extends PipeReducer {
String getPipeCommand(JobConf job) {
String str = job.get("stream.combine.streamprocessor");
try {
if (str != null) {
return URLDecoder.decode(str, "UTF-8");
}
} catch (UnsupportedEncodingException e) {
System.err.println("stream.combine.streamprocessor" +
" in jobconf not found");
}
return null;
}
boolean getDoPipe() {
return (getPipeCommand(job_) != null);
}
}