pegasus.mapreduce.triangle

Class PrePartition

java.lang.Object

org.apache.hadoop.conf.Configured

pegasus.mapreduce.triangle.PrePartition

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

public class PrePartition
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.util.Tool

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PrePartition.PGMapper
static class	PrePartition.PGReducer

Field Summary

Fields

Modifier and Type	Field and Description
int	nodeSize

Constructor Summary

Constructors

Constructor and Description
PrePartition()

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] args) The main entry point
void	partitionGraph(java.lang.String input, java.lang.String output, int numColors) partition the graph
int	run(java.lang.String[] args) submit the hadoop job for pre-partitioning

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

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.conf.Configurable

getConf, setConf

Field Detail

nodeSize

public int nodeSize

Constructor Detail

PrePartition

public PrePartition()

Method Detail

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

The main entry point

Parameters:

args - [0]: input file path. [1]: output file path. [2]: the number of colors.

Throws:

java.lang.Exception - by hadoop

run

public int run(java.lang.String[] args)
        throws java.lang.Exception

submit the hadoop job for pre-partitioning

Specified by:

run in interface org.apache.hadoop.util.Tool

Parameters:

args - [0]: input file path. [1]: output file path. [2]: the number of colors.

Returns:

not used

Throws:

java.lang.Exception - by hadoop

partitionGraph

public void partitionGraph(java.lang.String input,
                           java.lang.String output,
                           int numColors)
                    throws java.io.IOException,
                           java.lang.InterruptedException,
                           java.lang.ClassNotFoundException

partition the graph

Parameters:

input - file path

output - file path

numColors - the number of colors

Throws:

java.io.IOException - by hadoop

java.lang.InterruptedException - by hadoop

java.lang.ClassNotFoundException - by hadoop