org.apache.hadoop.yarn.server.resourcemanager.scheduler

Interface PreemptableResourceScheduler

All Superinterfaces:

org.apache.hadoop.yarn.event.EventHandler<SchedulerEvent>, Recoverable, ResourceScheduler, YarnScheduler

All Known Implementing Classes:

CapacityScheduler

public interface PreemptableResourceScheduler
extends ResourceScheduler

Interface for a scheduler that supports preemption/killing

Method Summary

Methods

Modifier and Type	Method and Description
void	dropContainerReservation(RMContainer container) If the scheduler support container reservations, this method is used to ask the scheduler to drop the reservation for the given container.
void	killContainer(RMContainer container) Ask the scheduler to forcibly interrupt the container given as input
void	preemptContainer(org.apache.hadoop.yarn.api.records.ApplicationAttemptId aid, RMContainer container) Ask the scheduler to obtain back the container from a specific application by issuing a preemption request

Methods inherited from interface org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler

reinitialize

Methods inherited from interface org.apache.hadoop.yarn.server.resourcemanager.scheduler.YarnScheduler

allocate, checkAccess, getAppResourceUsageReport, getAppsInQueue, getMaximumResourceCapability, getMinimumResourceCapability, getNodeReport, getNumClusterNodes, getQueueInfo, getQueueUserAclInfo, getRMContainer, getRootQueueMetrics, getSchedulerAppInfo, moveApplication

Methods inherited from interface org.apache.hadoop.yarn.event.EventHandler

handle

Methods inherited from interface org.apache.hadoop.yarn.server.resourcemanager.recovery.Recoverable

recover

Method Detail

dropContainerReservation

void dropContainerReservation(RMContainer container)

If the scheduler support container reservations, this method is used to ask the scheduler to drop the reservation for the given container.

Parameters:

container - Reference to reserved container allocation.

preemptContainer

void preemptContainer(org.apache.hadoop.yarn.api.records.ApplicationAttemptId aid,
                    RMContainer container)

Ask the scheduler to obtain back the container from a specific application by issuing a preemption request

Parameters:

aid - the application from which we want to get a container back

container - the container we want back

killContainer

void killContainer(RMContainer container)

Ask the scheduler to forcibly interrupt the container given as input

Parameters:

container -