HadoopStreaming.java
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上传日期:2018-01-08
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- /**
- * 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 org.apache.hadoop.util.ToolRunner;
- /** The main entrypoint. Usually invoked with the script bin/hadoopStreaming
- * or bin/hadoop har hadoop-streaming.jar args.
- * It passes all the args to StreamJob which handles all the arguments.
- */
- public class HadoopStreaming {
- public static void main(String[] args) throws Exception {
- int returnStatus = 0;
- StreamJob job = new StreamJob();
- returnStatus = ToolRunner.run(job, args);
- if (returnStatus != 0) {
- System.err.println("Streaming Job Failed!");
- System.exit(returnStatus);
- }
- }
- }