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

Class StrictPreemptionContract

java.lang.Object

org.apache.hadoop.yarn.api.records.StrictPreemptionContract

@Public
@Evolving
public abstract class StrictPreemptionContract
extends Object

Enumeration of particular allocations to be reclaimed. The platform will reclaim exactly these resources, so the ApplicationMaster (AM) may attempt to checkpoint work or adjust its execution plan to accommodate it. In contrast to PreemptionContract, the AM has no flexibility in selecting which resources to return to the cluster.

See Also:

• PreemptionMessage

Constructor Summary

Constructors

Constructor	Description
StrictPreemptionContract()

Method Summary

Modifier and Type	Method	Description
abstract Set<PreemptionContainer>	getContainers()	Get the set of PreemptionContainer specifying containers owned by the ApplicationMaster that may be reclaimed by the ResourceManager.
static StrictPreemptionContract	newInstance(Set<PreemptionContainer> containers)
abstract void	setContainers(Set<PreemptionContainer> containers)

Methods inherited from class java.lang.Object

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

Constructor Details

StrictPreemptionContract

public StrictPreemptionContract()

Method Details

newInstance

@Private
@Unstable
public static StrictPreemptionContract newInstance(Set<PreemptionContainer> containers)

getContainers

@Public
@Evolving
public abstract Set<PreemptionContainer> getContainers()

Get the set of PreemptionContainer specifying containers owned by the ApplicationMaster that may be reclaimed by the ResourceManager.

Returns:

the set of ContainerId to be preempted.

setContainers

@Private
@Unstable
public abstract void setContainers(Set<PreemptionContainer> containers)