validatenacluster.ValidateNacluster.java Source code

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Here is the source code for validatenacluster.ValidateNacluster.java

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package validatenacluster;

/**
 *
 * @author rodrigob
 */
import java.io.IOException;
import java.net.InetAddress;
import java.util.*;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.*;
import org.apache.hadoop.mapred.*;

public class ValidateNacluster {

    public static class Map extends MapReduceBase implements Mapper<LongWritable, Text, Text, IntWritable> {

        private final static IntWritable one = new IntWritable(1);
        InetAddress ip;

        private Text word = new Text("Total Lines");
        private Text id_partition = new Text("");

        public void map(LongWritable key, Text value, OutputCollector<Text, IntWritable> output, Reporter reporter)
                throws IOException {

            ip = InetAddress.getLocalHost();
            String line = value.toString();
            String id[] = line.split(";");

            Text word = new Text();
            word.set(id[0] + ip.getHostName());
            output.collect(word, one);
        }
    }

    public static class Reduce extends MapReduceBase implements Reducer<Text, IntWritable, Text, IntWritable> {

        public void reduce(Text key, Iterator<IntWritable> values, OutputCollector<Text, IntWritable> output,
                Reporter reporter) throws IOException {
            int sum = 0;
            while (values.hasNext()) {
                sum += values.next().get();
            }
            output.collect(key, new IntWritable(sum));
        }
    }

    public static void main(String[] args) throws Exception {

        JobConf conf = new JobConf(ValidateNacluster.class);
        conf.setJobName("Partition for Machine Count");
        conf.setOutputKeyClass(Text.class);
        conf.setOutputValueClass(IntWritable.class);
        conf.setMapperClass(Map.class);
        conf.setCombinerClass(Reduce.class);
        conf.setReducerClass(Reduce.class);
        conf.setInputFormat(TextInputFormat.class);
        conf.setOutputFormat(TextOutputFormat.class);
        FileInputFormat.setInputPaths(conf, new Path(args[0]));
        FileOutputFormat.setOutputPath(conf, new Path(args[1]));
        JobClient.runJob(conf);

    }
}