StreamAggregate.java
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上传日期:2018-01-08
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文件大小:2k
- /**
- * 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.*;
- import org.apache.hadoop.streaming.Environment;
- /**
- Used to test the usage of external applications without adding
- platform-specific dependencies.
- */
- public class StreamAggregate extends TrApp
- {
- public StreamAggregate()
- {
- super('.', ' ');
- }
- public void go() throws IOException
- {
- testParentJobConfToEnvVars();
- BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
- String line;
- while ((line = in.readLine()) != null) {
- String [] words = line.split(" ");
- for (int i = 0; i< words.length; i++) {
- String out = "LongValueSum:" + words[i].trim() + "t" + "1";
- System.out.println(out);
- }
- }
- }
- public static void main(String[] args) throws IOException
- {
- TrApp app = new StreamAggregate();
- app.go();
- }
- }