org.apache.tinkerpop.gremlin.hadoop.process.computer

Class HadoopMap

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.NullWritable,VertexWritable,ObjectWritable,ObjectWritable>

org.apache.tinkerpop.gremlin.hadoop.process.computer.HadoopMap

public class HadoopMap
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.NullWritable,VertexWritable,ObjectWritable,ObjectWritable>

Author:

Marko A. Rodriguez (http://markorodriguez.com)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	HadoopMap.HadoopMapEmitter<K,V>

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

org.apache.hadoop.mapreduce.Mapper.Context

Method Summary

Modifier and Type	Method and Description
void	cleanup(org.apache.hadoop.mapreduce.Mapper.Context context)
void	map(org.apache.hadoop.io.NullWritable key, VertexWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
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

Method Detail

setup

public void setup(org.apache.hadoop.mapreduce.Mapper.Context context)

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.NullWritable,VertexWritable,ObjectWritable,ObjectWritable>

map

public void map(org.apache.hadoop.io.NullWritable key,
                VertexWritable value,
                org.apache.hadoop.mapreduce.Mapper.Context context)
         throws IOException,
                InterruptedException

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.NullWritable,VertexWritable,ObjectWritable,ObjectWritable>

Throws:

IOException

InterruptedException

cleanup

public void cleanup(org.apache.hadoop.mapreduce.Mapper.Context context)

Overrides:

cleanup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.NullWritable,VertexWritable,ObjectWritable,ObjectWritable>