org.apache.hadoop.mapreduce.split

Class JobSplit.SplitMetaInfo

java.lang.Object

org.apache.hadoop.mapreduce.split.JobSplit.SplitMetaInfo

All Implemented Interfaces:

org.apache.hadoop.io.Writable

Enclosing class:

JobSplit

public static class JobSplit.SplitMetaInfo
extends Object
implements org.apache.hadoop.io.Writable

This represents the meta information about the task split. The main fields are - start offset in actual split - data length that will be processed in this split - hosts on which this split is local

Constructor Summary

Constructors

Constructor and Description
SplitMetaInfo()
SplitMetaInfo(InputSplit split, long startOffset)
SplitMetaInfo(String[] locations, long startOffset, long inputDataLength)

Method Summary

Modifier and Type	Method and Description
long	getInputDataLength()
String[]	getLocations()
long	getStartOffset()
void	readFields(DataInput in)
void	setInputDataLength(long length)
void	setInputDataLocations(String[] locations)
String	toString()
void	write(DataOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

SplitMetaInfo

public SplitMetaInfo()

SplitMetaInfo

public SplitMetaInfo(String[] locations,
                     long startOffset,
                     long inputDataLength)

SplitMetaInfo

public SplitMetaInfo(InputSplit split,
                     long startOffset)
              throws IOException

Throws:

IOException

Method Detail

getLocations

public String[] getLocations()

getStartOffset

public long getStartOffset()

getInputDataLength

public long getInputDataLength()

setInputDataLocations

public void setInputDataLocations(String[] locations)

setInputDataLength

public void setInputDataLength(long length)

readFields

public void readFields(DataInput in)
                throws IOException

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object