pegasus.mapreduce.triangle

Class EdgeOrder.EOStep2Reducer

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<LongPairWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.LongWritable>

pegasus.mapreduce.triangle.EdgeOrder.EOStep2Reducer

Enclosing class:

EdgeOrder

public static class EdgeOrder.EOStep2Reducer
extends org.apache.hadoop.mapreduce.Reducer<LongPairWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.LongWritable,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
EOStep2Reducer()

Method Summary

Modifier and Type	Method and Description
protected void	reduce(LongPairWritable pair, java.lang.Iterable<org.apache.hadoop.io.IntWritable> Degs, org.apache.hadoop.mapreduce.Reducer.Context context) The reduce function of the second step

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

EOStep2Reducer

public EOStep2Reducer()

Method Detail

reduce

protected void reduce(LongPairWritable pair,
                      java.lang.Iterable<org.apache.hadoop.io.IntWritable> Degs,
                      org.apache.hadoop.mapreduce.Reducer.Context context)
               throws java.io.IOException,
                      java.lang.InterruptedException

The reduce function of the second step

Overrides:

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

Parameters:

pair - an edge (u, v) such that u < v

Degs - a list of degree of source vertices. If a degree is less then 0, the degree is of destination vertex.

context - of hadoop

Throws:

java.io.IOException - by hadoop

java.lang.InterruptedException - by hadoop