Time for action – implementing WordCount

We have seen the use of the WordCount example program in Chapter 2, Getting Hadoop Up and Running. Now we will explore our own Java implementation by performing the following steps:

  1. Enter the following code into the WordCount1.java file:
    Import java.io.* ; import org.apache.hadoop.conf.Configuration ; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.IntWritable; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.mapreduce.Mapper; import org.apache.hadoop.mapreduce.Reducer; import org.apache.hadoop.mapreduce.lib.input.FileInputFormat; import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; public class WordCount1 { public static class WordCountMapper ...

Get Hadoop: Data Processing and Modelling now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial