pegasus.mapreduce.common.prepartitioning

Class UnweightedGraphPrepartitioning.PrepartitioningReducer

java.lang.Object

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

pegasus.mapreduce.common.prepartitioning.GraphPrepartitioningReducer<LongArrayWritable,ColumnEntry>

pegasus.mapreduce.common.prepartitioning.UnweightedGraphPrepartitioning.PrepartitioningReducer

Enclosing class:

UnweightedGraphPrepartitioning

public static class UnweightedGraphPrepartitioning.PrepartitioningReducer
extends GraphPrepartitioningReducer<LongArrayWritable,ColumnEntry>

Nested Class Summary

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

org.apache.hadoop.mapreduce.Reducer.Context

Field Summary

Fields inherited from class pegasus.mapreduce.common.prepartitioning.GraphPrepartitioningReducer

dvWriter, maxVertex, numBlocks, numDenseCols, numDenseRows, numSparseCols, numSparseRows, svWriter

Constructor Summary

Constructors

Constructor and Description
PrepartitioningReducer()

Method Summary

Modifier and Type	Method and Description
protected void	reduce(org.apache.hadoop.io.LongWritable vertex, java.lang.Iterable<LongArrayWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)
protected void	setup(org.apache.hadoop.mapreduce.Reducer.Context context)

Methods inherited from class pegasus.mapreduce.common.prepartitioning.GraphPrepartitioningReducer

cleanup

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

PrepartitioningReducer

public PrepartitioningReducer()

Method Detail

setup

protected void setup(org.apache.hadoop.mapreduce.Reducer.Context context)
              throws java.io.IOException,
                     java.lang.InterruptedException

Overrides:

setup in class GraphPrepartitioningReducer<LongArrayWritable,ColumnEntry>

Throws:

java.io.IOException

java.lang.InterruptedException

reduce

protected void reduce(org.apache.hadoop.io.LongWritable vertex,
                      java.lang.Iterable<LongArrayWritable> values,
                      org.apache.hadoop.mapreduce.Reducer.Context context)
               throws java.io.IOException,
                      java.lang.InterruptedException

Overrides:

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

Throws:

java.io.IOException

java.lang.InterruptedException