Time for action – WordCount the easy way

Let's revisit WordCount, but this time use some of these predefined map and reduce implementations:

  1. Create a new WordCountPredefined.java file containing the following code:
    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.lib.input.FileInputFormat; import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; import org.apache.hadoop.mapreduce.lib.map.TokenCounterMapper ; import org.apache.hadoop.mapreduce.lib.reduce.IntSumReducer ; public class WordCountPredefined { public static void main(String[] args) throws Exception { ...

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