MyFOF

package com.sxt.hadoop.mr.fof;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;

public class MyFOF {
	public static void main(String[] args) throws Exception {
		Configuration conf = new Configuration(true);
		Job job = Job.getInstance(conf);
		job.setJarByClass(MyFOF.class);
		//conf:
		//map
		job.setMapperClass(FMapper.class);
		job.setMapOutputKeyClass(Text.class);
		job.setMapOutputValueClass(IntWritable.class);
		//reduce
		job.setReducerClass(FReducer.class);
		//input/output
		Path intput = new Path("/data/fof/input");
		FileInputFormat.addInputPath(job, intput );
		Path output = new Path("/data/fof/output");
		if(output.getFileSystem(conf).exists(output)){
			output.getFileSystem(conf).delete(output,true);
		}
		FileOutputFormat.setOutputPath(job, output );
		//submit
		job.waitForCompletion(true);
	}
}