org.apache.hadoop.mapred

类 MapTaskCompletionEventsUpdate

java.lang.Object

org.apache.hadoop.mapred.MapTaskCompletionEventsUpdate

所有已实现的接口:

Writable

public class MapTaskCompletionEventsUpdate
extends Object
implements Writable

A class that represents the communication between the tasktracker and child tasks w.r.t the map task completion events. It also indicates whether the child task should reset its events index.

构造器概要

构造器

构造器和说明
MapTaskCompletionEventsUpdate()
MapTaskCompletionEventsUpdate(TaskCompletionEvent[] events, boolean reset)

方法概要

方法

限定符和类型	方法和说明
TaskCompletionEvent[]	getMapTaskCompletionEvents()
void	readFields(DataInput in) Deserialize the fields of this object from in.
boolean	shouldReset()
void	write(DataOutput out) Serialize the fields of this object to out.

从类继承的方法 java.lang.Object

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

构造器详细资料

MapTaskCompletionEventsUpdate

public MapTaskCompletionEventsUpdate()

MapTaskCompletionEventsUpdate

public MapTaskCompletionEventsUpdate(TaskCompletionEvent[] events,
                             boolean reset)

方法详细资料

shouldReset

public boolean shouldReset()

getMapTaskCompletionEvents

public TaskCompletionEvent[] getMapTaskCompletionEvents()

write

public void write(DataOutput out)
           throws IOException

从接口复制的说明: Writable

Serialize the fields of this object to out.

指定者:

write 在接口中 Writable

参数:

out - DataOuput to serialize this object into.

抛出:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

从接口复制的说明: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

指定者:

readFields 在接口中 Writable

参数:

in - DataInput to deseriablize this object from.

抛出:

IOException