StefanRRichter commented on a change in pull request #8523:
[FLINK-12481][runtime] Invoke timer callback in task thread (via mailbox)
URL: https://github.com/apache/flink/pull/8523#discussion_r287716344
##########
File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/StreamTask.java
##########
@@ -1358,4 +1358,19 @@ public void actionsUnavailable() throws
InterruptedException {
mailbox.putMail(actionUnavailableLetter);
}
}
+
+ private class TimerInvocationContext implements
SystemProcessingTimeService.ScheduledCallbackExecutionContext {
Review comment:
I am not sure if I like this approach of exposing the mailbox to the timer
service. What is the advantage over simply passing the `MailboxSender`
interface into the SystemProcessingTimeService and if needed a way to handle
the async exception? I think that makes the code easier to follow in comparison
to callback ping-pong between stream task and timer service.
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