org.apache.flink.runtime.io.network.partition

类 RoundRobinSubpartitionSelector<T>

java.lang.Object

org.apache.flink.runtime.io.network.partition.RoundRobinSubpartitionSelector<T>

所有已实现的接口:

SubpartitionSelector<T>

public class RoundRobinSubpartitionSelector<T>
extends Object
implements SubpartitionSelector<T>

A SubpartitionSelector that selects all subpartitions in round-robin order.

构造器概要

构造器

构造器和说明
RoundRobinSubpartitionSelector()

方法概要

限定符和类型	方法和说明
T	getNextSubpartitionToConsume() Returns the next subpartition to consume data.
boolean	isMoreSubpartitionSwitchable() Whether the invoker can get a different subpartition in the next invocation of SubpartitionSelector.getNextSubpartitionToConsume().
void	markLastConsumptionStatus(boolean isDataAvailable, boolean isPartialRecord) Records the status of the last consumption attempt on the subpartition returned by the last invocation of SubpartitionSelector.getNextSubpartitionToConsume().
boolean	notifyDataAvailable(T subpartition) Marks a subpartition as having data available.

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

RoundRobinSubpartitionSelector

public RoundRobinSubpartitionSelector()

方法详细资料

notifyDataAvailable

public boolean notifyDataAvailable(T subpartition)

从接口复制的说明: SubpartitionSelector

Marks a subpartition as having data available.

指定者:

notifyDataAvailable 在接口中 SubpartitionSelector<T>

返回:

true if this selector did not already contain the subpartition.

getNextSubpartitionToConsume

public T getNextSubpartitionToConsume()

从接口复制的说明: SubpartitionSelector

Returns the next subpartition to consume data.

指定者:

getNextSubpartitionToConsume 在接口中 SubpartitionSelector<T>

markLastConsumptionStatus

public void markLastConsumptionStatus(boolean isDataAvailable,
                                      boolean isPartialRecord)

从接口复制的说明: SubpartitionSelector

Records the status of the last consumption attempt on the subpartition returned by the last invocation of SubpartitionSelector.getNextSubpartitionToConsume().

This method must be invoked every time a subpartition acquired from this class is consumed.

指定者:

markLastConsumptionStatus 在接口中 SubpartitionSelector<T>

参数:

isDataAvailable - whether the consumption returned a valid data.

isPartialRecord - whether the returned data contains partial record. Ignored if there was no data available.

isMoreSubpartitionSwitchable

public boolean isMoreSubpartitionSwitchable()

从接口复制的说明: SubpartitionSelector

Whether the invoker can get a different subpartition in the next invocation of SubpartitionSelector.getNextSubpartitionToConsume().

指定者:

isMoreSubpartitionSwitchable 在接口中 SubpartitionSelector<T>