org.apache.hadoop.mapreduce.v2.api.records
Class TaskAttemptId

java.lang.Object
  org.apache.hadoop.mapreduce.v2.api.records.TaskAttemptId

All Implemented Interfaces:

Comparable<TaskAttemptId>

Direct Known Subclasses:

TaskAttemptIdPBImpl

public abstract class TaskAttemptId
extends Object
implements Comparable<TaskAttemptId>

TaskAttemptId represents the unique identifier for a task attempt. Each task attempt is one particular instance of a Map or Reduce Task identified by its TaskId.

TaskAttemptId consists of 2 parts. First part is the TaskId, that this TaskAttemptId belongs to. Second part is the task attempt number.

Field Summary

protected static String

TASKATTEMPT

Constructor Summary

TaskAttemptId()

Method Summary

int	compareTo(TaskAttemptId other)
boolean	equals(Object obj)
abstract int	getId()
abstract TaskId	getTaskId()
int	hashCode()
abstract void	setId(int id)
abstract void	setTaskId(TaskId taskId)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

TASKATTEMPT

protected static final String TASKATTEMPT

See Also:

Constant Field Values

Constructor Detail

TaskAttemptId

public TaskAttemptId()

Method Detail

getTaskId

public abstract TaskId getTaskId()

Returns:

the associated TaskId.

getId

public abstract int getId()

Returns:

the attempt id.

setTaskId

public abstract void setTaskId(TaskId taskId)

setId

public abstract void setId(int id)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

compareTo

public int compareTo(TaskAttemptId other)

Specified by:

compareTo in interface Comparable<TaskAttemptId>