com.cloudera.sa.securewordcount.SecureWordCountDriver.java Source code

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Here is the source code for com.cloudera.sa.securewordcount.SecureWordCountDriver.java

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package com.cloudera.sa.securewordcount;

import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
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.input.TextInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.util.GenericOptionsParser;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;

/**
 *
 * @author vsingh
 */
public class SecureWordCountDriver extends Configured implements Tool {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        try {
            ToolRunner.run(new Configuration(), new SecureWordCountDriver(), args);
        } catch (Exception ex) {
            Logger.getLogger(SecureWordCountDriver.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    @Override
    public int run(String[] args) throws Exception {
        Configuration config = getConf();
        args = new GenericOptionsParser(config, args).getRemainingArgs();

        if (args.length < 2) {

            ToolRunner.printGenericCommandUsage(System.out);
            return 2;
        }
        Job job = Job.getInstance(config, this.getClass().getName() + "-wordcount");
        job.setJarByClass(SecureWordCountDriver.class);
        job.setInputFormatClass(TextInputFormat.class);
        job.setMapperClass(TokenizerMapper.class);
        job.setCombinerClass(IntSumReducer.class);
        job.setReducerClass(IntSumReducer.class);
        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(IntWritable.class);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(IntWritable.class);
        FileInputFormat.addInputPath(job, new Path(args[0]));
        FileOutputFormat.setOutputPath(job, new Path(args[1]));
        return job.waitForCompletion(true) ? 0 : 1;

    }

}