/**
* 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 java.util.Date;
import java.io.IOException;
import java.util.Iterator;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.WritableComparable;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reducer;
import org.apache.hadoop.mapred.Reporter;
public class ValueCountReduce implements Reducer {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
}
public void reduce(Object arg0, Iterator arg1, OutputCollector arg2, Reporter arg3) throws IOException {
int count = 0;
while (arg1.hasNext()) {
count += 1;
arg1.next();
}
arg2.collect(arg0, new Text("" + count));
}
public void configure(JobConf arg0) {
// TODO Auto-generated method stub
}
public void close() throws IOException {
// TODO Auto-generated method stub
}
}