rkhachatryan commented on a change in pull request #15146:
URL: https://github.com/apache/flink/pull/15146#discussion_r593172534
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File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/io/checkpointing/AlternatingController.java
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@@ -188,12 +266,12 @@ private boolean canTimeout(CheckpointBarrier barrier) {
return barrier.getCheckpointOptions().isTimeoutable()
&& barrier.getId() <= lastSeenBarrier
&& barrier.getCheckpointOptions().getAlignmentTimeout() *
1_000_000
- < (System.nanoTime() - firstBarrierArrivalTime);
+ < (clock.relativeTimeNanos() - lastBarrierArrivalTime);
}
- private long getArrivalTime(CheckpointBarrier announcedBarrier) {
- return announcedBarrier.getCheckpointOptions().isTimeoutable()
- ? System.nanoTime()
- : Long.MAX_VALUE;
+ /** A provider for a method to register a delayed action. */
+ @FunctionalInterface
+ public interface DelayedActionRegistration {
+ void schedule(Callable<?> callable, Duration delay);
Review comment:
> First of all I think the alignment timeout plays no role in the number
of timers
Could you explain why? My reasoning is:
- each checkpoint causes timer registration
- timer is not unregistered in the current implementation
- timer fires after alignment timeout
So during the alignment timeout, pedning timers accumulate.
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