org.apache.flink.runtime.scheduler.adaptive.scalingpolicy

类 EnforceParallelismChangeRescalingController

java.lang.Object

org.apache.flink.runtime.scheduler.adaptive.scalingpolicy.EnforceParallelismChangeRescalingController

所有已实现的接口:

RescalingController

public class EnforceParallelismChangeRescalingController
extends Object
implements RescalingController

Simple scaling policy. It just checks that the new parallelism is different (either increase or decrease) from the current parallelism.

构造器概要

构造器

构造器和说明
EnforceParallelismChangeRescalingController()

方法概要

限定符和类型	方法和说明
boolean	shouldRescale(VertexParallelism currentParallelism, VertexParallelism newParallelism) This method gets called whenever new resources or resource requirements are available and the scheduler needs to design whether to rescale or not.

从类继承的方法 java.lang.Object

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

构造器详细资料

EnforceParallelismChangeRescalingController

public EnforceParallelismChangeRescalingController()

方法详细资料

shouldRescale

public boolean shouldRescale(VertexParallelism currentParallelism,
                             VertexParallelism newParallelism)

从接口复制的说明: RescalingController

This method gets called whenever new resources or resource requirements are available and the scheduler needs to design whether to rescale or not.

指定者:

shouldRescale 在接口中 RescalingController

参数:

currentParallelism - parallelism of the currently running job graph.

newParallelism - Potential new parallelism with the additional resources.

返回:

true if the policy decided to rescale based on the provided information.