wordcount程序在linux系统上运行成功，在windows上运行失败

Mr-稻帅 2014-07-27 02:38:37

程序如下：

package com.javen.wordcount;



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.MapReduceBase;

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;



public class WordCount {

	

	private static final String INPUT_PATH = "hdfs://192.168.0.167:9000/user/micmiu/test/input";

	private static final String OUT_PATH = "hdfs://192.168.0.167:9000/user/micmiu/test/output";



	public static class WordCountMap extends MapReduceBase implements

			Mapper<LongWritable, Text, Text, IntWritable> {



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

		private Text word = new Text();



		@Override

		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 static class WordCountReduce extends MapReduceBase implements

			Reducer<Text, IntWritable, Text, IntWritable> {



		@Override

		public void reduce(Text key, Iterator<IntWritable> values,

				OutputCollector<Text, IntWritable> output, Reporter reporter)

				throws IOException {

			int sum = 0;

			while (values.hasNext()) {

				sum += values.next().get();

			}

			output.collect(key, new IntWritable(sum));

		}



	}



	public static void main(String[] args) throws IOException {

		JobConf conf = new JobConf(WordCount.class);

		conf.setJobName("wordcount");

		

		conf.setOutputKeyClass(Text.class);

		conf.setOutputValueClass(IntWritable.class);

		

		conf.setMapperClass(WordCountMap.class);

		conf.setReducerClass(WordCountReduce.class);

		

		conf.setInputFormat(TextInputFormat.class);

		conf.setOutputFormat(TextOutputFormat.class);

		

		FileInputFormat.setInputPaths(conf, new Path(INPUT_PATH));

		FileOutputFormat.setOutputPath(conf, new Path(OUT_PATH));

		

		JobClient.runJob(conf);

		

	}



}