| Interface | Description |
|---|---|
| OperatorStateMonitor | Used by GracefulShutdownListeners. |
| Class | Description |
|---|---|
| GracefulShutdownListener | Listens to an operator/selector and reports its state and activity to a GracefulShutdownMonitor, shared with other listeners. |
| GracefulShutdownMonitor | The monitor will orchestrate a graceful shutdown, when its shutdownNetwork() method is called. |
| ProcessorPauseResume | A listener to dataflow operators and selectors allowing them to be paused and resumed. |