org.apache.flink.streaming.api.operators.source

接口 TimestampsAndWatermarks.WatermarkUpdateListener

封闭接口:

TimestampsAndWatermarks<T>

@Internal
public static interface TimestampsAndWatermarks.WatermarkUpdateListener

Lets the owner/creator of the output know about latest emitted watermark.

方法概要

限定符和类型	方法和说明
void	updateCurrentEffectiveWatermark(long watermark) Effective watermark covers the WatermarkStatus.

方法详细资料

updateCurrentEffectiveWatermark

void updateCurrentEffectiveWatermark(long watermark)

Effective watermark covers the WatermarkStatus. If an output becomes idle, this method should be called with Long.MAX_VALUE, but what is more important, once it becomes active again it should call this method with the last emitted value of the watermark.