org.apache.flink.runtime.clusterframework.types

Class SlotProfile

java.lang.Object

org.apache.flink.runtime.clusterframework.types.SlotProfile

public class SlotProfile
extends Object

A slot profile describes the profile of a slot into which a task wants to be scheduled. The profile contains attributes such as resource or locality constraints, some of which may be hard or soft. It also contains the information of resources for the physical slot to host this task slot, which can be used to allocate a physical slot when no physical slot is available for this task slot. A matcher can be generated to filter out candidate slots by matching their SlotContext against the slot profile and, potentially, further requirements.

Method Summary

Modifier and Type	Method and Description
ResourceProfile	getPhysicalSlotResourceProfile() Returns the desired resource profile for the physical slot to host this task slot.
Collection<AllocationID>	getPreferredAllocations() Returns the desired allocation ids for the slot.
Collection<TaskManagerLocation>	getPreferredLocations() Returns the preferred locations for the slot.
Set<AllocationID>	getReservedAllocations() Returns a set of all reserved allocation ids from the execution graph.
ResourceProfile	getTaskResourceProfile() Returns the desired resource profile for the task slot.
static SlotProfile	priorAllocation(ResourceProfile taskResourceProfile, ResourceProfile physicalSlotResourceProfile, Collection<TaskManagerLocation> preferredLocations, Collection<AllocationID> priorAllocations, Set<AllocationID> reservedAllocations) Returns a slot profile for the given resource profile, prior allocations and all prior allocation ids from the whole execution graph.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getTaskResourceProfile

public ResourceProfile getTaskResourceProfile()

Returns the desired resource profile for the task slot.

getPhysicalSlotResourceProfile

public ResourceProfile getPhysicalSlotResourceProfile()

Returns the desired resource profile for the physical slot to host this task slot.

getPreferredLocations

public Collection<TaskManagerLocation> getPreferredLocations()

Returns the preferred locations for the slot.

getPreferredAllocations

public Collection<AllocationID> getPreferredAllocations()

Returns the desired allocation ids for the slot.

getReservedAllocations

public Set<AllocationID> getReservedAllocations()

Returns a set of all reserved allocation ids from the execution graph. It will used by PreviousAllocationSlotSelectionStrategy to support local recovery. In this case, a vertex cannot take an reserved allocation unless it exactly prefers that allocation.

This is optional and can be empty if unused.

priorAllocation

public static SlotProfile priorAllocation(ResourceProfile taskResourceProfile,
                                          ResourceProfile physicalSlotResourceProfile,
                                          Collection<TaskManagerLocation> preferredLocations,
                                          Collection<AllocationID> priorAllocations,
                                          Set<AllocationID> reservedAllocations)

Returns a slot profile for the given resource profile, prior allocations and all prior allocation ids from the whole execution graph.

Parameters:

taskResourceProfile - specifying the required resources for the task slot

physicalSlotResourceProfile - specifying the required resources for the physical slot to host this task slot

preferredLocations - specifying the preferred locations

priorAllocations - specifying the prior allocations

reservedAllocations - specifying all reserved allocations

Returns:

Slot profile with all the given information

toString

public String toString()

Overrides:

toString in class Object