WatermarkOutputMultiplexer.WatermarkUpdateListener (Flink : Core 2.1.1-cp2 API)

All Known Implementing Classes:

WatermarkOutputMultiplexer.NoOpWatermarkUpdateListener

Enclosing class:

WatermarkOutputMultiplexer
```
@Internal
public static interface WatermarkOutputMultiplexer.WatermarkUpdateListener
```
A callback for propagating changes to split based watermarks.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onIdleUpdate(boolean idle)`	Called when the idle state changes.
`void`	`onWatermarkUpdate(long watermark)`	Called when the watermark increases.

- Method Detail
  - onWatermarkUpdate
```
void onWatermarkUpdate(long watermark)
```
    Called when the watermark increases.
  - onIdleUpdate
```
void onIdleUpdate(boolean idle)
```
    Called when the idle state changes.