org.apache.tez.mapreduce.examples

Class MapredWordCount.Reduce

java.lang.Object

org.apache.hadoop.mapred.MapReduceBase

org.apache.tez.mapreduce.examples.MapredWordCount.Reduce

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Reducer<Text,IntWritable,Text,IntWritable>

Enclosing class:

MapredWordCount

public static class MapredWordCount.Reduce
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Reducer<Text,IntWritable,Text,IntWritable>

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

Constructor Summary

Constructors

Constructor and Description
Reduce()

Method Summary

Modifier and Type	Method and Description
void	reduce(Text key, Iterator<IntWritable> values, org.apache.hadoop.mapred.OutputCollector<Text,IntWritable> output, org.apache.hadoop.mapred.Reporter reporter)

Methods inherited from class org.apache.hadoop.mapred.MapReduceBase

close, configure

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.mapred.JobConfigurable

configure

Methods inherited from interface java.io.Closeable

close

Constructor Detail

Reduce

public Reduce()

Method Detail

reduce

public void reduce(Text key,
                   Iterator<IntWritable> values,
                   org.apache.hadoop.mapred.OutputCollector<Text,IntWritable> output,
                   org.apache.hadoop.mapred.Reporter reporter)
            throws IOException

Specified by:

reduce in interface org.apache.hadoop.mapred.Reducer<Text,IntWritable,Text,IntWritable>

Throws:

IOException