Package io.hgraphdb.giraph

Class HBaseVertexOutputFormat

java.lang.Object

org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable<I,V,E>

org.apache.giraph.io.OutputFormat<I,V,E>

org.apache.giraph.io.VertexOutputFormat<ObjectWritable,VertexValueWritable,org.apache.hadoop.io.Writable>

io.hgraphdb.giraph.HBaseVertexOutputFormat

All Implemented Interfaces:

org.apache.giraph.conf.GiraphConfigurationSettable<ObjectWritable,VertexValueWritable,org.apache.hadoop.io.Writable>, org.apache.giraph.conf.ImmutableClassesGiraphConfigurable<ObjectWritable,VertexValueWritable,org.apache.hadoop.io.Writable>

public abstract class HBaseVertexOutputFormat
extends org.apache.giraph.io.VertexOutputFormat<ObjectWritable,VertexValueWritable,org.apache.hadoop.io.Writable>

Base class for writing Vertex mutations back to specific rows in an HBase table. This class wraps an instance of TableOutputFormat for easy configuration with the existing properties. Works with HBaseVertexInputFormat

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	HBaseVertexOutputFormat.HBaseVertexWriter	Constructor

Constructor Summary

Constructors

Constructor	Description
HBaseVertexOutputFormat()

Method Summary

Modifier and Type	Method	Description
void	checkOutputSpecs(org.apache.hadoop.mapreduce.JobContext context)	checkOutputSpecs
org.apache.hadoop.mapreduce.OutputCommitter	getOutputCommitter(org.apache.hadoop.mapreduce.TaskAttemptContext context)	getOutputCommitter

Methods inherited from class org.apache.giraph.io.VertexOutputFormat

createVertexWriter

Methods inherited from class org.apache.giraph.io.OutputFormat

postWriting, preWriting

Methods inherited from class org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable

getConf, setConf

Methods inherited from class java.lang.Object

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

Constructor Detail

HBaseVertexOutputFormat

public HBaseVertexOutputFormat()

Method Detail

checkOutputSpecs

public void checkOutputSpecs(org.apache.hadoop.mapreduce.JobContext context)
                      throws IOException,
                             InterruptedException

checkOutputSpecs

Specified by:

checkOutputSpecs in class org.apache.giraph.io.OutputFormat<ObjectWritable,VertexValueWritable,org.apache.hadoop.io.Writable>

Parameters:

context - information about the job

Throws:

IOException

InterruptedException

getOutputCommitter

public org.apache.hadoop.mapreduce.OutputCommitter getOutputCommitter(org.apache.hadoop.mapreduce.TaskAttemptContext context)
                                                               throws IOException,
                                                                      InterruptedException

getOutputCommitter

Specified by:

getOutputCommitter in class org.apache.giraph.io.OutputFormat<ObjectWritable,VertexValueWritable,org.apache.hadoop.io.Writable>

Parameters:

context - the task context

Returns:

OutputCommitter ouputCommitter

Throws:

IOException

InterruptedException