mapreducemaxstock.MapReduceMaxStock.java Source code

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Here is the source code for mapreducemaxstock.MapReduceMaxStock.java

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/*
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package mapreducemaxstock;

/**
 *
 * @author luisf
 */
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.FloatWritable;
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.mapreduce.lib.output.TextOutputFormat;

public class MapReduceMaxStock {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
        if (args.length != 2) {
            System.err.println("Invalid parameters:input_path output_path");
            System.exit(-1);
        }

        //Create MapReduce job
        Job job = new Job();
        job.setJarByClass(MapReduceMaxStock.class);
        job.setJobName("MaxStockPrice");

        //Specify input and output paths
        FileInputFormat.addInputPath(job, new Path(args[0]));
        FileOutputFormat.setOutputPath(job, new Path(args[1]));

        //Specify input and output formats
        job.setInputFormatClass(TextInputFormat.class);
        job.setOutputFormatClass(TextOutputFormat.class);

        //Specify mapper and reducer classes
        job.setMapperClass(StockPriceMapper.class);
        job.setReducerClass(StockPriceReducer.class);

        //Specify Key,Value types
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(FloatWritable.class);

        //submit job
        boolean jobStatus = job.waitForCompletion(true);

        System.exit(jobStatus ? 0 : 1);
    }

}