org.apache.giraph.examples

Class SimpleSuperstepComputation.SimpleSuperstepVertexInputFormat

java.lang.Object

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

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

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

org.apache.giraph.io.formats.GeneratedVertexInputFormat<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.FloatWritable>

org.apache.giraph.examples.SimpleSuperstepComputation.SimpleSuperstepVertexInputFormat

All Implemented Interfaces:

GiraphConfigurationSettable<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.FloatWritable>, ImmutableClassesGiraphConfigurable<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.FloatWritable>

Enclosing class:

SimpleSuperstepComputation

public static class SimpleSuperstepComputation.SimpleSuperstepVertexInputFormat
extends GeneratedVertexInputFormat<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.FloatWritable>

Simple VertexInputFormat that supports SimpleSuperstepComputation

Constructor Summary

Constructors

Constructor and Description
SimpleSuperstepVertexInputFormat()

Method Summary

Modifier and Type	Method and Description
VertexReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.FloatWritable>	createVertexReader(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context) Create a vertex reader for a given split.

Methods inherited from class org.apache.giraph.io.formats.GeneratedVertexInputFormat

checkInputSpecs, getSplits

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

readInputSplit, writeInputSplit

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

SimpleSuperstepVertexInputFormat

public SimpleSuperstepVertexInputFormat()

Method Detail

createVertexReader

public VertexReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.FloatWritable> createVertexReader(org.apache.hadoop.mapreduce.InputSplit split,
                                                                                                                                              org.apache.hadoop.mapreduce.TaskAttemptContext context)
                                                                                                                                       throws IOException

Description copied from class: VertexInputFormat

Create a vertex reader for a given split. Guaranteed to have been configured with setConf() prior to use. The framework will also call VertexReader.initialize(InputSplit, TaskAttemptContext) before the split is used.

Specified by:

createVertexReader in class VertexInputFormat<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.FloatWritable>

Parameters:

split - the split to be read

context - the information about the task

Returns:

a new record reader

Throws:

IOException