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

Interface Summary

Interface	Description
PreemptableResourceScheduler	Interface for a scheduler that supports preemption/killing
Queue
ResourceScheduler	This interface is the one implemented by the schedulers.
YarnScheduler	This interface is used by the components to talk to the scheduler for allocating of resources, cleaning up resources.

Class Summary

Class	Description
AbstractYarnScheduler<T extends SchedulerApplicationAttempt,N extends SchedulerNode>
ActiveUsersManager	ActiveUsersManager tracks active users in the system.
Allocation
AppSchedulingInfo	This class keeps track of all the consumption of an application.
NodeReport	Node usage report.
NodeResponse	The class that encapsulates response from clusterinfo for updates from the node managers.
QueueMetrics
ResourceLimits	Resource limits for queues/applications, this means max overall (please note that, it's not "extra") resource you can get.
ResourceUsage	Resource Usage by Labels for following fields by label - AM resource (to enforce max-am-resource-by-label after YARN-2637) - Used resource (includes AM resource usage) - Reserved resource - Pending resource - Headroom This class can be used to track resource usage in queue/user/app.
SchedContainerChangeRequest	This is UpdateContainerRequest in scheduler side, it contains some pointers to runtime objects like RMContainer, SchedulerNode, etc.
SchedulerApplication<T extends SchedulerApplicationAttempt>
SchedulerApplicationAttempt	Represents an application attempt from the viewpoint of the scheduler.
SchedulerAppReport	Represents an application attempt, and the resources that the attempt is using.
SchedulerAppUtils
SchedulerHealth
SchedulerHealth.DetailedInformation
SchedulerNode	Represents a YARN Cluster Node from the viewpoint of the scheduler.
SchedulerNodeReport	Node usage report.
SchedulerUtils	Utilities shared by schedulers.

Enum Summary

Enum	Description
NodeType	Resource classification.
SchedulerApplicationAttempt.AMState

Exception Summary

Exception	Description
QueueInvalidException
SchedulerDynamicEditException