Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package Assignment5_P2_DistinctIPAddress; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.NullWritable; 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 java.io.IOException; /** * * @author Chintan */ public class DistinctIPAddressDriver { /** * @param args the command line arguments */ public static void main(String[] args) throws IOException, InterruptedException, ClassNotFoundException { Configuration conf = new Configuration(); Job job = Job.getInstance(conf, "IP Address Count"); job.setJarByClass(DistinctIPAddressDriver.class); job.setMapperClass(DistinctIPAddress_Mapper.class); job.setCombinerClass(DistinctIPAddress_Reducer.class); job.setReducerClass(DistinctIPAddress_Reducer.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(NullWritable.class); FileInputFormat.addInputPath(job, new Path(args[0])); FileOutputFormat.setOutputPath(job, new Path(args[1])); System.exit(job.waitForCompletion(true) ? 0 : 1); } }