org.apache.flink.streaming.api.operators

接口 OnWatermarkCallback<KEY>

@Internal
public interface OnWatermarkCallback<KEY>

A callback registered with the InternalWatermarkCallbackService service. This callback will be invoked for all keys registered with the service, upon reception of a watermark.

方法概要

限定符和类型	方法和说明
void	onWatermark(KEY key, Watermark watermark) The action to be triggered upon reception of a watermark.

方法详细资料

onWatermark

void onWatermark(KEY key,
                 Watermark watermark)
          throws IOException

The action to be triggered upon reception of a watermark.

参数:

key - The current key.

watermark - The current watermark.

抛出:

IOException