com.j.distributed.sorter.SorterJob.java Source code

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Here is the source code for com.j.distributed.sorter.SorterJob.java

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package com.j.distributed.sorter;

import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
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;
import org.apache.hadoop.util.Tool;

/**
 *
 * @author jonatan
 */
public class SorterJob extends Configured implements Tool {

    @Override
    public int run(String... options) throws Exception {

        Job job = Job.getInstance(getConf(), getClass().toString());
        job.setJarByClass(getClass());

        job.setMapperClass(SorterMapper.class);
        job.setCombinerClass(SorterReducer.class);
        job.setReducerClass(SorterReducer.class);

        job.setOutputKeyClass(LongWritable.class);
        job.setOutputValueClass(Text.class);
        job.setSortComparatorClass(LongWritable.DecreasingComparator.class);

        FileInputFormat.addInputPath(job, new Path(options[1]));
        FileOutputFormat.setOutputPath(job, new Path(options[2]));
        return job.waitForCompletion(true) ? 0 : 1;
    }

}