Package org.apache.flink.streaming.api.operators

Class InternalTimerServiceAsyncImpl<K,N>

java.lang.Object

org.apache.flink.streaming.api.operators.InternalTimerServiceImpl<K,N>

org.apache.flink.streaming.api.operators.InternalTimerServiceAsyncImpl<K,N>

Type Parameters:

K - Type of timer's key.

N - Type of the namespace to which timers are scoped.

All Implemented Interfaces:

InternalTimerService<N>

@Internal
public class InternalTimerServiceAsyncImpl<K,N>
extends InternalTimerServiceImpl<K,N>

An implementation of InternalTimerService that is used by org.apache.flink.streaming.runtime.operators.asyncprocessing.AbstractAsyncStateStreamOperator. The timer service will set RecordContext for the timers before invoking action to preserve the execution order between timer firing and records processing.

See Also:

FLIP-425 timers section.

Field Summary

Fields inherited from class org.apache.flink.streaming.api.operators.InternalTimerServiceImpl

cancellationContext, currentWatermark, eventTimeTimersQueue, keyContext, nextTimer, processingTimeService, processingTimeTimersQueue, taskIOMetricGroup, triggerTarget

Method Summary

Modifier and Type	Method	Description
void	advanceWatermark(long time)	Advance one watermark, this will fire some event timers.
protected void	foreachTimer(BiConsumerWithException<N,Long,Exception> consumer, KeyGroupedInternalPriorityQueue<TimerHeapInternalTimer<K,N>> queue)	Iterator each timer in the queue, and invoke the consumer.

Methods inherited from class org.apache.flink.streaming.api.operators.InternalTimerServiceImpl

currentProcessingTime, currentWatermark, deleteEventTimeTimer, deleteProcessingTimeTimer, forEachEventTimeTimer, forEachProcessingTimeTimer, getKeySerializer, getNamespaceSerializer, numEventTimeTimers, numEventTimeTimers, numProcessingTimeTimers, numProcessingTimeTimers, registerEventTimeTimer, registerProcessingTimeTimer, restoreTimersForKeyGroup, snapshotTimersForKeyGroup, startTimerService, tryAdvanceWatermark

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

advanceWatermark

public void advanceWatermark(long time)
                      throws Exception

Advance one watermark, this will fire some event timers.

Overrides:

advanceWatermark in class InternalTimerServiceImpl<K,N>

Parameters:

time - the time in watermark.

Throws:

Exception

foreachTimer

protected void foreachTimer(BiConsumerWithException<N,Long,Exception> consumer,
                            KeyGroupedInternalPriorityQueue<TimerHeapInternalTimer<K,N>> queue)
                     throws Exception

Iterator each timer in the queue, and invoke the consumer. This function is mainly used by state-processor-API. TODO: Ensure state-processor-API that only uses sync state API.

Overrides:

foreachTimer in class InternalTimerServiceImpl<K,N>

Throws:

Exception