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 AllLab_Skeleton.Lab1; import org.apache.hadoop.io.IntWritable; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Reducer; import java.io.IOException; /** * * @author Chintan */ public class WordCount_Reducer extends Reducer<Text, IntWritable, Text, IntWritable> { private static int count = 0; public void reduce(Text key, Iterable<IntWritable> values, Context context) throws IOException, InterruptedException { for (IntWritable val : values) { count += val.get(); } } @Override protected void cleanup(Context context) throws IOException, InterruptedException { context.write(new Text("Count : "), new IntWritable(count)); } } // arr[1] = stock symbol // arr[4] = stock price high