Java中如何操作MultipleOutputs节制reduce输出路径

package com.mr.test;

import java.io.IOException;

import java.util.Iterator;

import java.util.StringTokenizer;  
import org.apache.hadoop.fs.Path;

import org.apache.hadoop.io.IntWritable;

import org.apache.hadoop.io.LongWritable;

import org.apache.hadoop.io.Text;

import org.apache.hadoop.mapred.FileInputFormat;

import org.apache.hadoop.mapred.FileOutputFormat;

import org.apache.hadoop.mapred.JobClient;

import org.apache.hadoop.mapred.JobConf;

import org.apache.hadoop.mapred.Mapper;

import org.apache.hadoop.mapred.OutputCollector;

import org.apache.hadoop.mapred.Reducer;

import org.apache.hadoop.mapred.Reporter;

import org.apache.hadoop.mapred.TextInputFormat;

import org.apache.hadoop.mapred.TextOutputFormat;

import org.apache.hadoop.mapred.lib.MultipleOutputs;  
public class WordCount {

    public static class MyMap implements

            Mapper<LongWritable, Text, Text, IntWritable> {

        private final static IntWritable one = new IntWritable(1);

        private Text word = new Text();  
        public void map(LongWritable key, Text value,

                OutputCollector<Text, IntWritable> output, Reporter reporter)

                throws IOException {

            String line = value.toString();

            StringTokenizer tokenizer = new StringTokenizer(line);

            while (tokenizer.hasMoreTokens()) {

                word.set(tokenizer.nextToken());

                output.collect(word, one);

            }

        }

        public void configure(JobConf arg0) {  
        }

        public void close() throws IOException {

            // TODO Auto-generated method stub

        }

    }

   //本栏目
test1
test2
test3
test4
test5
output:
-rw-r--r--   2 test supergroup          0 2014-04-20 11:23 /chukwa/output/0419-10/_SUCCESS
drwxr-xr-x   - test supergroup          0 2014-04-20 11:23 /chukwa/output/0419-10/_logs
-rw-r--r--   2 test supergroup         42 2014-04-20 11:23 /chukwa/output/0419-10/part-00000.lzo
-rw-r--r--   2 test supergroup         58 2014-04-20 11:23 /chukwa/output/0419-10/test1-m-00000.lzo
-rw-r--r--   2 test supergroup         58 2014-04-20 11:23 /chukwa/output/0419-10/test2-m-00000.lzo
-rw-r--r--   2 test supergroup         58 2014-04-20 11:23 /chukwa/output/0419-10/test3-m-00000.lzo
-rw-r--r--   2test supergroup         58 2014-04-20 11:23 /chukwa/output/0419-10/test4-m-00001.lzo
-rw-r--r--   2 test supergroup         58 2014-04-20 11:23 /chukwa/output/0419-10/test5-m-00001.lzo