FirstPartition

package com.sxt.hadoop.mr.tfidf;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.lib.partition.HashPartitioner;
/**
 * 第一个MR自定义分区
 * @author root
 *
 */
public class FirstPartition extends HashPartitioner<Text, IntWritable>{
	public int getPartition(Text key, IntWritable value, int reduceCount) {
		if(key.equals(new Text("count")))
			return 3;
		else
			return super.getPartition(key, value, reduceCount-1);
	}

}