org.apache.hadoop.yarn.server.resourcemanager.recovery.records

Class Epoch

java.lang.Object

org.apache.hadoop.yarn.server.resourcemanager.recovery.records.Epoch

Direct Known Subclasses:

EpochPBImpl

@InterfaceAudience.Private
@InterfaceStability.Unstable
public abstract class Epoch
extends Object

The epoch information of RM for work-preserving restart. Epoch is incremented each time RM restart. It's used for assuring uniqueness of ContainerId.

Constructor Summary

Constructors

Constructor and Description
Epoch()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj)
abstract int	getEpoch()
abstract org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.EpochProto	getProto()
int	hashCode()
static Epoch	newInstance(int sequenceNumber)
abstract void	setEpoch(int sequenceNumber)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Epoch

public Epoch()

Method Detail

newInstance

public static Epoch newInstance(int sequenceNumber)

getEpoch

public abstract int getEpoch()

setEpoch

public abstract void setEpoch(int sequenceNumber)

getProto

public abstract org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos.EpochProto getProto()

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object