org.apache.hadoop.examples
Class SecondarySort.Reduce

java.lang.Object
  org.apache.hadoop.mapreduce.Reducer<SecondarySort.IntPair,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable>
      org.apache.hadoop.examples.SecondarySort.Reduce

Enclosing class:

SecondarySort

public static class SecondarySort.Reduce
extends org.apache.hadoop.mapreduce.Reducer<SecondarySort.IntPair,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable>

A reducer class that just emits the sum of the input values.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer

org.apache.hadoop.mapreduce.Reducer.Context

Constructor Summary

SecondarySort.Reduce()

Method Summary

void	reduce(SecondarySort.IntPair key, Iterable<org.apache.hadoop.io.IntWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)

Methods inherited from class org.apache.hadoop.mapreduce.Reducer

cleanup, run, setup

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SecondarySort.Reduce

public SecondarySort.Reduce()

Method Detail

reduce

public void reduce(SecondarySort.IntPair key,
                   Iterable<org.apache.hadoop.io.IntWritable> values,
                   org.apache.hadoop.mapreduce.Reducer.Context context)
            throws IOException,
                   InterruptedException

Overrides:

reduce in class org.apache.hadoop.mapreduce.Reducer<SecondarySort.IntPair,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable>

Throws:

IOException

InterruptedException