edu.umd.cloud9.example.hits

Class RangePartitioner<K,V>

java.lang.Object

edu.umd.cloud9.example.hits.RangePartitioner<K,V>

All Implemented Interfaces:

org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Partitioner<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Writable>

public class RangePartitioner<K,V>
extends Object
implements org.apache.hadoop.mapred.Partitioner<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Writable>

Range partitioner. In the context of graph algorithms, ensures that consecutive node ids are blocked together.

Author:

Jimmy Lin

Constructor Summary

Constructors

Constructor and Description
RangePartitioner()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(org.apache.hadoop.mapred.JobConf job)
int	getPartition(org.apache.hadoop.io.IntWritable key, org.apache.hadoop.io.Writable value, int numReduceTasks)

Methods inherited from class java.lang.Object

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

Constructor Detail

RangePartitioner

public RangePartitioner()

Method Detail

getPartition

public int getPartition(org.apache.hadoop.io.IntWritable key,
               org.apache.hadoop.io.Writable value,
               int numReduceTasks)

Specified by:

getPartition in interface org.apache.hadoop.mapred.Partitioner<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Writable>

configure

public void configure(org.apache.hadoop.mapred.JobConf job)

Specified by:

configure in interface org.apache.hadoop.mapred.JobConfigurable