org.apache.flink.runtime.jobmaster.slotpool

Interface SlotSelectionStrategy

All Known Implementing Classes:

LocationPreferenceSlotSelectionStrategy, PreviousAllocationSlotSelectionStrategy

public interface SlotSelectionStrategy

Interface for slot selection strategies to be used in the Scheduler.

Nested Class Summary

Nested Classes

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

Method Summary

Modifier and Type	Method and Description
Optional<SlotSelectionStrategy.SlotInfoAndLocality>	selectBestSlotForProfile(Collection<SlotSelectionStrategy.SlotInfoAndResources> availableSlots, SlotProfile slotProfile) Selects the best SlotInfo w.r.t.

Method Detail

selectBestSlotForProfile

Optional<SlotSelectionStrategy.SlotInfoAndLocality> selectBestSlotForProfile(@Nonnull
                                                                             Collection<SlotSelectionStrategy.SlotInfoAndResources> availableSlots,
                                                                             @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:

availableSlots - 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.