org.apache.hadoop.yarn.api.records

Class ContainerId

java.lang.Object

org.apache.hadoop.yarn.api.records.ContainerId

All Implemented Interfaces:

Comparable<ContainerId>

@InterfaceAudience.Public
@InterfaceStability.Stable
public abstract class ContainerId
extends Object
implements Comparable<ContainerId>

ContainerId represents a globally unique identifier for a Container in the cluster.

Constructor Summary

Constructors

Constructor and Description
ContainerId()

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract void	build()
int	compareTo(ContainerId other)
boolean	equals(Object obj)
abstract ApplicationAttemptId	getApplicationAttemptId() Get the ApplicationAttemptId of the application to which the Container was assigned.
abstract int	getId() Get the identifier of the ContainerId.
int	hashCode()
static ContainerId	newInstance(ApplicationAttemptId appAttemptId, int containerId)
protected abstract void	setApplicationAttemptId(ApplicationAttemptId atId)
protected abstract void	setId(int id)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ContainerId

public ContainerId()

Method Detail

newInstance

@InterfaceAudience.Private
@InterfaceStability.Unstable
public static ContainerId newInstance(ApplicationAttemptId appAttemptId,
                                                                            int containerId)

getApplicationAttemptId

@InterfaceAudience.Public
@InterfaceStability.Stable
public abstract ApplicationAttemptId getApplicationAttemptId()

Get the ApplicationAttemptId of the application to which the Container was assigned.

Note: If containers are kept alive across application attempts via ApplicationSubmissionContext.setKeepContainersAcrossApplicationAttempts(boolean) the ContainerId does not necessarily contain the current running application attempt's ApplicationAttemptId This container can be allocated by previously exited application attempt and managed by the current running attempt thus have the previous application attempt's ApplicationAttemptId.

Returns:

ApplicationAttemptId of the application to which the Container was assigned

setApplicationAttemptId

@InterfaceAudience.Private
@InterfaceStability.Unstable
protected abstract void setApplicationAttemptId(ApplicationAttemptId atId)

getId

@InterfaceAudience.Public
@InterfaceStability.Stable
public abstract int getId()

Get the identifier of the ContainerId.

Returns:

identifier of the ContainerId

setId

@InterfaceAudience.Private
@InterfaceStability.Unstable
protected 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

compareTo

public int compareTo(ContainerId other)

Specified by:

compareTo in interface Comparable<ContainerId>

toString

public String toString()

Overrides:

toString in class Object

build

protected abstract void build()