@Private @Unstable

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

Package org.apache.hadoop.yarn.server.resourcemanager.scheduler.placement contains classes related to application monitor.

Interface Summary

Interface	Description
CandidateNodeSet<N extends SchedulerNode>	A group of nodes which can be allocated by scheduler.
MultiNodeLookupPolicy<N extends SchedulerNode>	This class has the following functionality.

Class Summary

Class	Description
AppPlacementAllocator<N extends SchedulerNode>	This class has the following functionality: 1) Keeps track of pending resource requests when following events happen: - New ResourceRequests are added to scheduler.
CandidateNodeSetUtils	Utility methods for CandidateNodeSet.
LocalityAppPlacementAllocator<N extends SchedulerNode>	This is an implementation of the AppPlacementAllocator that takes into account locality preferences (node, rack, any) when allocating containers.
MultiNodePolicySpec	MultiNodePolicySpec contains policyName and timeout.
MultiNodeSorter<N extends SchedulerNode>	Common node sorting class which will do sorting based on policy spec.
MultiNodeSortingManager<N extends SchedulerNode>	Node Sorting Manager which runs all sorter threads and policies.
PendingAskUpdateResult	Result of a resource-request update.
ResourceUsageMultiNodeLookupPolicy<N extends SchedulerNode>	This class has the following functionality:
SimpleCandidateNodeSet<N extends SchedulerNode>	A simple CandidateNodeSet which keeps an unordered map
SingleConstraintAppPlacementAllocator<N extends SchedulerNode>	This is a simple implementation to do affinity or anti-affinity for inter/intra apps.