Package org.apache.flink.runtime.jobmaster.slotpool

Interface SlotSelectionStrategy

All Known Implementing Classes:

LocationPreferenceSlotSelectionStrategy, PreviousAllocationSlotSelectionStrategy

public interface SlotSelectionStrategy

Interface for slot selection strategies.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	SlotSelectionStrategy.SlotInfoAndLocality	This class is a value type that combines a SlotInfo with a Locality hint.

Method Summary

Modifier and Type	Method	Description
Optional<SlotSelectionStrategy.SlotInfoAndLocality>	selectBestSlotForProfile(FreeSlotTracker freeSlotTracker, SlotProfile slotProfile)	Selects the best SlotInfo w.r.t. a certain selection criterion from the provided list of available slots and considering the given SlotProfile that describes the requirements.

Method Detail

selectBestSlotForProfile

Optional<SlotSelectionStrategy.SlotInfoAndLocality> selectBestSlotForProfile(@Nonnull
                                                                             FreeSlotTracker freeSlotTracker,
                                                                             @Nonnull
                                                                             SlotProfile slotProfile)

Selects the best SlotInfo w.r.t. a certain selection criterion from the provided list of available slots and considering the given SlotProfile that describes the requirements.

Parameters:

freeSlotTracker - a list of the available slots together with their remaining resources to select from.

slotProfile - a slot profile, describing requirements for the slot selection.

Returns:

the selected slot info with the corresponding locality hint.