org.apache.flink.runtime.resourcemanager.slotmanager

Enum LeastUtilizationSlotMatchingStrategy

java.lang.Object

java.lang.Enum<LeastUtilizationSlotMatchingStrategy>

org.apache.flink.runtime.resourcemanager.slotmanager.LeastUtilizationSlotMatchingStrategy

All Implemented Interfaces:

Serializable, Comparable<LeastUtilizationSlotMatchingStrategy>, SlotMatchingStrategy

public enum LeastUtilizationSlotMatchingStrategy
extends Enum<LeastUtilizationSlotMatchingStrategy>
implements SlotMatchingStrategy

SlotMatchingStrategy which picks a matching slot from a TaskExecutor with the least utilization.

Enum Constant Summary

Enum Constants

Enum Constant and Description
INSTANCE

Method Summary

Modifier and Type	Method and Description
<T extends TaskManagerSlotInformation> Optional<T>	findMatchingSlot(ResourceProfile requestedProfile, Collection<T> freeSlots, java.util.function.Function<InstanceID,Integer> numberRegisteredSlotsLookup) Finds a matching slot for the requested ResourceProfile given the collection of free slots and the total number of slots per TaskExecutor.
static LeastUtilizationSlotMatchingStrategy	valueOf(String name) Returns the enum constant of this type with the specified name.
static LeastUtilizationSlotMatchingStrategy[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

INSTANCE

public static final LeastUtilizationSlotMatchingStrategy INSTANCE

Method Detail

values

public static LeastUtilizationSlotMatchingStrategy[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (LeastUtilizationSlotMatchingStrategy c : LeastUtilizationSlotMatchingStrategy.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static LeastUtilizationSlotMatchingStrategy valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

findMatchingSlot

public <T extends TaskManagerSlotInformation> Optional<T> findMatchingSlot(ResourceProfile requestedProfile,
                                                                           Collection<T> freeSlots,
                                                                           java.util.function.Function<InstanceID,Integer> numberRegisteredSlotsLookup)

Description copied from interface: SlotMatchingStrategy

Finds a matching slot for the requested ResourceProfile given the collection of free slots and the total number of slots per TaskExecutor.

Specified by:

findMatchingSlot in interface SlotMatchingStrategy

Parameters:

requestedProfile - to find a matching slot for

freeSlots - collection of free slots

numberRegisteredSlotsLookup - lookup for the number of registered slots

Returns:

Returns a matching slots or Optional.empty() if there is none