org.apache.flink.streaming.api

Interface TimerService

All Known Implementing Classes:

SimpleTimerService

@PublicEvolving
public interface TimerService

Interface for working with time and timers.

Method Summary

Methods

Modifier and Type	Method and Description
long	currentProcessingTime() Returns the current processing time.
long	currentWatermark() Returns the current event-time watermark.
void	registerEventTimeTimer(long time) Registers a timer to be fired when the event time watermark passes the given time.
void	registerProcessingTimeTimer(long time) Registers a timer to be fired when processing time passes the given time.

Method Detail

currentProcessingTime

long currentProcessingTime()

Returns the current processing time.

currentWatermark

long currentWatermark()

Returns the current event-time watermark.

registerProcessingTimeTimer

void registerProcessingTimeTimer(long time)

Registers a timer to be fired when processing time passes the given time.

Timers can internally be scoped to keys and/or windows. When you set a timer in a keyed context, such as in an operation on KeyedStream then that context will also be active when you receive the timer notification.

registerEventTimeTimer

void registerEventTimeTimer(long time)

Registers a timer to be fired when the event time watermark passes the given time.

Timers can internally be scoped to keys and/or windows. When you set a timer in a keyed context, such as in an operation on KeyedStream then that context will also be active when you receive the timer notification.