org.apache.giraph.io.formats

Class IdWithValueTextOutputFormat<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

java.lang.Object

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

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

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

org.apache.giraph.io.formats.TextVertexOutputFormat<I,V,E>

org.apache.giraph.io.formats.IdWithValueTextOutputFormat<I,V,E>

Type Parameters:

I - Vertex index value

V - Vertex value

E - Edge value

All Implemented Interfaces:

GiraphConfigurationSettable<I,V,E>, ImmutableClassesGiraphConfigurable<I,V,E>

public class IdWithValueTextOutputFormat<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>
extends TextVertexOutputFormat<I,V,E>

Write out Vertices' IDs and values, but not their edges nor edges' values. This is a useful output format when the final value of the vertex is all that's needed. The boolean configuration parameter reverse.id.and.value allows reversing the output of id and value.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	IdWithValueTextOutputFormat.IdWithValueVertexWriter Vertex writer used with IdWithValueTextOutputFormat.

Nested classes/interfaces inherited from class org.apache.giraph.io.formats.TextVertexOutputFormat

TextVertexOutputFormat.TextVertexWriter, TextVertexOutputFormat.TextVertexWriterToEachLine

Field Summary

Fields

Modifier and Type	Field and Description
static String	LINE_TOKENIZE_VALUE Specify the output delimiter
static String	LINE_TOKENIZE_VALUE_DEFAULT Default output delimiter
static String	REVERSE_ID_AND_VALUE Reverse id and value order?
static boolean	REVERSE_ID_AND_VALUE_DEFAULT Default is to not reverse id and value order.

Fields inherited from class org.apache.giraph.io.formats.TextVertexOutputFormat

textOutputFormat

Constructor Summary

Constructors

Constructor and Description
IdWithValueTextOutputFormat()

Method Summary

Modifier and Type	Method and Description
TextVertexOutputFormat.TextVertexWriter	createVertexWriter(org.apache.hadoop.mapreduce.TaskAttemptContext context) The factory method which produces the TextVertexOutputFormat.TextVertexWriter used by this output format.

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

checkOutputSpecs, getOutputCommitter

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

Field Detail

LINE_TOKENIZE_VALUE

public static final String LINE_TOKENIZE_VALUE

Specify the output delimiter

See Also:

Constant Field Values

LINE_TOKENIZE_VALUE_DEFAULT

public static final String LINE_TOKENIZE_VALUE_DEFAULT

Default output delimiter

See Also:

Constant Field Values

REVERSE_ID_AND_VALUE

public static final String REVERSE_ID_AND_VALUE

Reverse id and value order?

See Also:

Constant Field Values

REVERSE_ID_AND_VALUE_DEFAULT

public static final boolean REVERSE_ID_AND_VALUE_DEFAULT

Default is to not reverse id and value order.

See Also:

Constant Field Values

Constructor Detail

IdWithValueTextOutputFormat

public IdWithValueTextOutputFormat()

Method Detail

createVertexWriter

public TextVertexOutputFormat.TextVertexWriter createVertexWriter(org.apache.hadoop.mapreduce.TaskAttemptContext context)

Description copied from class: TextVertexOutputFormat

The factory method which produces the TextVertexOutputFormat.TextVertexWriter used by this output format.

Specified by:

createVertexWriter in class TextVertexOutputFormat<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

Parameters:

context - the information about the task

Returns:

the text vertex writer to be used