程序包 org.apache.flink.streaming.api.windowing.evictors

接口概要

接口	说明
Evictor<T,W extends Window>	An Evictor can remove elements from a pane before/after the evaluation of WindowFunction and after the window evaluation gets triggered by a Trigger A pane is the bucket of elements that have the same key (assigned by the KeySelector) and same Window.
Evictor.EvictorContext	A context object that is given to Evictor methods.

类概要

类	说明
CountEvictor<W extends Window>	An Evictor that keeps up to a certain amount of elements.
DeltaEvictor<T,W extends Window>	An Evictor that keeps elements based on a DeltaFunction and a threshold.
TimeEvictor<W extends Window>	An Evictor that keeps elements for a certain amount of time.