com.ema.hadoop.bestclient.BestClient.java Source code

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Here is the source code for com.ema.hadoop.bestclient.BestClient.java

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package com.ema.hadoop.bestclient;

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;
import com.ema.hadoop.bestclient.BCMapper;
import com.ema.hadoop.bestclient.BCReducer;
import org.apache.hadoop.mapred.JobConf;

/**
 *
 * @author student
 */
public class BestClient {
    public static void main(String[] args) throws Exception {

        if (args.length != 4) {
            System.err.println("Usage: BestClient <input path> <output path> <date start> <date end>");
            System.exit(-1);
        }

        Job job = Job.getInstance();
        job.setJarByClass(BestClient.class);
        job.setJobName("Best client job");

        JobConf jobConf = (JobConf) job.getConfiguration();
        jobConf.setStrings("dates", args[2], args[3]);

        FileInputFormat.setInputPaths(job, new Path(args[0]));
        FileOutputFormat.setOutputPath(job, new Path(args[1]));

        job.setMapperClass(BCMapper.class);
        job.setReducerClass(BCReducer.class);

        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(IntWritable.class);

        System.exit(job.waitForCompletion(true) ? 0 : 1);
    }
}