org.apache.hadoop.mapreduce.task.reduce
Class MapOutput<K,V>

java.lang.Object
  org.apache.hadoop.mapreduce.task.reduce.MapOutput<K,V>

@InterfaceAudience.LimitedPrivate(value="MapReduce")
@InterfaceStability.Unstable
public abstract class MapOutput<K,V>
extends Object

Nested Class Summary

static class

MapOutput.MapOutputComparator<K,V>

Constructor Summary

MapOutput(TaskAttemptID mapId, long size, boolean primaryMapOutput)

Method Summary

abstract void	abort()
abstract void	commit()
boolean	equals(Object obj)
abstract String	getDescription()
TaskAttemptID	getMapId()
long	getSize()
int	hashCode()
boolean	isPrimaryMapOutput()
abstract void	shuffle(MapHost host, InputStream input, long compressedLength, long decompressedLength, ShuffleClientMetrics metrics, Reporter reporter)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MapOutput

public MapOutput(TaskAttemptID mapId,
                 long size,
                 boolean primaryMapOutput)

Method Detail

isPrimaryMapOutput

public boolean isPrimaryMapOutput()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getMapId

public TaskAttemptID getMapId()

getSize

public long getSize()

shuffle

public abstract void shuffle(MapHost host,
                             InputStream input,
                             long compressedLength,
                             long decompressedLength,
                             ShuffleClientMetrics metrics,
                             Reporter reporter)
                      throws IOException

Throws:

IOException

commit

public abstract void commit()
                     throws IOException

Throws:

IOException

abort

public abstract void abort()

getDescription

public abstract String getDescription()

toString

public String toString()

Overrides:

toString in class Object