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 Assignment3_P5_Top25Movies; import org.apache.hadoop.io.FloatWritable; import org.apache.hadoop.io.IntWritable; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Mapper; import java.io.IOException; /** * * @author Chintan */ public class Top25MovieRating_Mapper1 extends Mapper<Object, Text, FloatWritable, IntWritable> { private IntWritable movieID; private FloatWritable rating; public void map(Object key, Text value, Context context) throws IOException, InterruptedException { String[] movieInfo = value.toString().split("\t"); movieID = new IntWritable(Integer.parseInt(movieInfo[0])); rating = new FloatWritable(Float.parseFloat(movieInfo[1])); context.write(rating, movieID); } }