org.apache.flink.runtime.scheduler

类 DefaultVertexParallelismInfo

java.lang.Object

org.apache.flink.runtime.scheduler.DefaultVertexParallelismInfo

所有已实现的接口:

VertexParallelismInformation

public class DefaultVertexParallelismInfo
extends Object
implements VertexParallelismInformation

A VertexParallelismInformation implementation that provides common validation.

构造器概要

构造器

构造器和说明
DefaultVertexParallelismInfo(int parallelism, int maxParallelism, java.util.function.Function<Integer,Optional<String>> rescaleMaxValidator) Create VertexParallelismInformation with max parallelism rescaling validation for a vertex.

方法概要

限定符和类型	方法和说明
boolean	canRescaleMaxParallelism(int desiredMaxParallelism) Returns whether the vertex's max parallelism can be changed to a given value.
int	getMaxParallelism() Returns the vertex's max parallelism.
int	getParallelism() Returns a vertex's parallelism.
void	setMaxParallelism(int maxParallelism) Changes a given vertex's max parallelism property.
void	setParallelism(int parallelism) Set a given vertex's parallelism property.

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

DefaultVertexParallelismInfo

public DefaultVertexParallelismInfo(int parallelism,
                                    int maxParallelism,
                                    java.util.function.Function<Integer,Optional<String>> rescaleMaxValidator)

Create VertexParallelismInformation with max parallelism rescaling validation for a vertex.

参数:

parallelism - the vertex's parallelism

maxParallelism - the vertex's max parallelism

rescaleMaxValidator - the validation function to provide an error message if a max parallelism rescale is not allowed

方法详细资料

getParallelism

public int getParallelism()

从接口复制的说明: VertexParallelismInformation

Returns a vertex's parallelism.

指定者:

getParallelism 在接口中 VertexParallelismInformation

返回:

the parallelism for the vertex

getMaxParallelism

public int getMaxParallelism()

从接口复制的说明: VertexParallelismInformation

Returns the vertex's max parallelism.

指定者:

getMaxParallelism 在接口中 VertexParallelismInformation

返回:

the max parallelism for the vertex

setParallelism

public void setParallelism(int parallelism)

从接口复制的说明: VertexParallelismInformation

Set a given vertex's parallelism property. The parallelism can be changed only if the vertex parallelism was not decided yet (i.e. was -1).

指定者:

setParallelism 在接口中 VertexParallelismInformation

参数:

parallelism - the parallelism for the vertex

setMaxParallelism

public void setMaxParallelism(int maxParallelism)

从接口复制的说明: VertexParallelismInformation

Changes a given vertex's max parallelism property. The caller should first check the validity of the new setting via VertexParallelismInformation.canRescaleMaxParallelism(int), otherwise this operation may fail.

指定者:

setMaxParallelism 在接口中 VertexParallelismInformation

参数:

maxParallelism - the new max parallelism for the vertex

canRescaleMaxParallelism

public boolean canRescaleMaxParallelism(int desiredMaxParallelism)

从接口复制的说明: VertexParallelismInformation

Returns whether the vertex's max parallelism can be changed to a given value.

指定者:

canRescaleMaxParallelism 在接口中 VertexParallelismInformation

参数:

desiredMaxParallelism - the desired max parallelism for the vertex

返回:

whether the max parallelism can be changed to the given value