org.apache.reef.runtime.common.driver.resourcemanager

Class ResourceManagerStatus

java.lang.Object

org.apache.reef.runtime.common.driver.resourcemanager.ResourceManagerStatus

All Implemented Interfaces:

DriverIdlenessSource, EventHandler<RuntimeStatusEvent>

public final class ResourceManagerStatus
extends Object
implements EventHandler<RuntimeStatusEvent>, DriverIdlenessSource

Manages the status of the Resource Manager and tracks whether it is idle.

Method Summary

Methods

Modifier and Type	Method and Description
IdleMessage	getIdleStatus() Driver is idle if, regardless of status, it has no evaluators allocated and no pending container requests.
void	onNext(RuntimeStatusEvent runtimeStatusEvent) Handles an event.
void	setRunning() Change the state of the Resource Manager to be RUNNING.

Methods inherited from class java.lang.Object

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

Method Detail

onNext

public void onNext(RuntimeStatusEvent runtimeStatusEvent)

Description copied from interface: EventHandler

Handles an event.

Specified by:

onNext in interface EventHandler<RuntimeStatusEvent>

Parameters:

runtimeStatusEvent - an event

setRunning

public void setRunning()

Change the state of the Resource Manager to be RUNNING.

getIdleStatus

public IdleMessage getIdleStatus()

Driver is idle if, regardless of status, it has no evaluators allocated and no pending container requests. This method is used in the DriverIdleManager. If all DriverIdlenessSource components are idle, DriverIdleManager will initiate Driver shutdown.

Specified by:

getIdleStatus in interface DriverIdlenessSource

Returns:

idle, if there are no outstanding requests or allocations. Not idle otherwise.