org.apache.flink.runtime.instance

Interface SlotProvider

All Known Implementing Classes:

Scheduler

public interface SlotProvider

The slot provider is responsible for preparing slots for ready-to-run tasks.

It supports two allocating modes:

• Immediate allocating: A request for a task slot immediately gets satisfied, we can call Future.getNow(Object) to get the allocated slot.
• Queued allocating: A request for a task slot is queued and returns a future that will be fulfilled as soon as a slot becomes available.

Method Summary

Methods

Modifier and Type	Method and Description
Future<SimpleSlot>	allocateSlot(ScheduledUnit task, boolean allowQueued) Allocating slot with specific requirement.

Method Detail

allocateSlot

Future<SimpleSlot> allocateSlot(ScheduledUnit task,
                              boolean allowQueued)

Allocating slot with specific requirement.

Parameters:

task - The task to allocate the slot for

allowQueued - Whether allow the task be queued if we do not have enough resource

Returns:

The future of the allocation