com.thinkaurelius.titan.hadoop.mapreduce.util

Class CountMapReduce.Reduce

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.LongWritable>

com.thinkaurelius.titan.hadoop.mapreduce.util.CountMapReduce.Reduce

Enclosing class:

CountMapReduce

public static class CountMapReduce.Reduce
extends org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.LongWritable>

Nested Class Summary

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

org.apache.hadoop.mapreduce.Reducer.Context

Constructor Summary

Constructors

Constructor and Description
Reduce()

Method Summary

Modifier and Type	Method and Description
void	cleanup(org.apache.hadoop.mapreduce.Reducer.Context context)
void	reduce(org.apache.hadoop.io.NullWritable key, Iterable<org.apache.hadoop.io.LongWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)
void	setup(org.apache.hadoop.mapreduce.Reducer.Context context)

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

run

Methods inherited from class java.lang.Object

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

Constructor Detail

Reduce

public Reduce()

Method Detail

setup

public void setup(org.apache.hadoop.mapreduce.Reducer.Context context)

Overrides:

setup in class org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.LongWritable>

reduce

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

Overrides:

reduce in class org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.LongWritable>

Throws:

IOException

InterruptedException

cleanup

public void cleanup(org.apache.hadoop.mapreduce.Reducer.Context context)
             throws IOException,
                    InterruptedException

Overrides:

cleanup in class org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.LongWritable>

Throws:

IOException

InterruptedException