pegasus.mapreduce.graphgen

Class RMATGenerator.RMATGeneratorMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.IntWritable,pegasus.mapreduce.graphgen.RMATGenerator.RegionSlot,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.LongWritable>

pegasus.mapreduce.graphgen.RMATGenerator.RMATGeneratorMapper

Enclosing class:

RMATGenerator

public static class RMATGenerator.RMATGeneratorMapper
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.IntWritable,pegasus.mapreduce.graphgen.RMATGenerator.RegionSlot,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.LongWritable>

Nested Class Summary

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

org.apache.hadoop.mapreduce.Mapper.Context

Constructor Summary

Constructors

Constructor and Description
RMATGeneratorMapper()

Method Summary

Modifier and Type	Method and Description
protected void	map(org.apache.hadoop.io.IntWritable key, pegasus.mapreduce.graphgen.RMATGenerator.RegionSlot rs, org.apache.hadoop.mapreduce.Mapper.Context context) The map function of the RMAT graph generator.
protected void	setup(org.apache.hadoop.mapreduce.Mapper.Context context) Setup before execution.

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

cleanup, run

Methods inherited from class java.lang.Object

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

Constructor Detail

RMATGeneratorMapper

public RMATGeneratorMapper()

Method Detail

setup

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

Setup before execution. Read noises and probabilities.

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.IntWritable,pegasus.mapreduce.graphgen.RMATGenerator.RegionSlot,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.LongWritable>

Parameters:

context - of hadoop

Throws:

java.io.IOException - by hadoop

java.lang.InterruptedException - by hadoop

map

protected void map(org.apache.hadoop.io.IntWritable key,
                   pegasus.mapreduce.graphgen.RMATGenerator.RegionSlot rs,
                   org.apache.hadoop.mapreduce.Mapper.Context context)
            throws java.io.IOException,
                   java.lang.InterruptedException

The map function of the RMAT graph generator.

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.IntWritable,pegasus.mapreduce.graphgen.RMATGenerator.RegionSlot,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.LongWritable>

Parameters:

key - task id

rs - a region slot that contains regions to process here.

context - of hadoop

Throws:

java.io.IOException - by hadoop

java.lang.InterruptedException - by hadoop