datafu.hourglass.mapreduce

Class DelegatingMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object>

datafu.hourglass.mapreduce.DelegatingMapper

public class DelegatingMapper
extends org.apache.hadoop.mapreduce.Mapper<java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object>

A Hadoop mapper which delegates to an implementation read from the distributed cache.

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
DelegatingMapper()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	cleanup(org.apache.hadoop.mapreduce.Mapper.Context context)
protected void	map(java.lang.Object key, java.lang.Object value, org.apache.hadoop.mapreduce.Mapper.Context context)
protected void	setup(org.apache.hadoop.mapreduce.Mapper.Context context)

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

run

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegatingMapper

public DelegatingMapper()

Method Detail

setup

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

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object>

Throws:

java.io.IOException

java.lang.InterruptedException

map

protected void map(java.lang.Object key,
       java.lang.Object value,
       org.apache.hadoop.mapreduce.Mapper.Context context)
            throws java.io.IOException,
                   java.lang.InterruptedException

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object>

Throws:

java.io.IOException

java.lang.InterruptedException

cleanup

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

Overrides:

cleanup in class org.apache.hadoop.mapreduce.Mapper<java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object>

Throws:

java.io.IOException

java.lang.InterruptedException