Package org.apache.hadoop.yarn.api.records

Class ApplicationAttemptId

java.lang.Object

org.apache.hadoop.yarn.api.records.ApplicationAttemptId

All Implemented Interfaces:

Comparable<ApplicationAttemptId>

@Public
@Stable
public abstract class ApplicationAttemptId
extends Object
implements Comparable<ApplicationAttemptId>

ApplicationAttemptId denotes the particular attempt of an ApplicationMaster for a given ApplicationId.

Multiple attempts might be needed to run an application to completion due to temporal failures of the ApplicationMaster such as hardware failures, connectivity issues etc. on the node on which it was scheduled.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	appAttemptIdStrPrefix

Constructor Summary

Constructors

Constructor	Description
ApplicationAttemptId()

Method Summary

Modifier and Type	Method	Description
protected abstract void	build()
int	compareTo(ApplicationAttemptId other)
boolean	equals(Object obj)
static ApplicationAttemptId	fromString(String appAttemptIdStr)
abstract ApplicationId	getApplicationId()	Get the ApplicationId of the ApplicationAttempId.
abstract int	getAttemptId()	Get the attempt id of the Application.
int	hashCode()
static ApplicationAttemptId	newInstance(ApplicationId appId, int attemptId)
protected abstract void	setApplicationId(ApplicationId appID)
protected abstract void	setAttemptId(int attemptId)
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

appAttemptIdStrPrefix

@Private
@Unstable
public static final String appAttemptIdStrPrefix

See Also:

• Constant Field Values

Constructor Details

ApplicationAttemptId

public ApplicationAttemptId()

Method Details

newInstance

@Public
@Unstable
public static ApplicationAttemptId newInstance(ApplicationId appId,
 int attemptId)

getApplicationId

@Public
@Stable
public abstract ApplicationId getApplicationId()

Get the ApplicationId of the ApplicationAttempId.

Returns:

ApplicationId of the ApplicationAttempId

setApplicationId

@Private
@Unstable
protected abstract void setApplicationId(ApplicationId appID)

getAttemptId

@Public
@Stable
public abstract int getAttemptId()

Get the attempt id of the Application.

Returns:

attempt id of the Application

setAttemptId

@Private
@Unstable
protected abstract void setAttemptId(int attemptId)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

compareTo

public int compareTo(ApplicationAttemptId other)

Specified by:

compareTo in interface Comparable<ApplicationAttemptId>

toString

public String toString()

Overrides:

toString in class Object

build

protected abstract void build()

fromString

@Public
@Stable
public static ApplicationAttemptId fromString(String appAttemptIdStr)