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Subject [GitHub] [flink] 1u0 commented on a change in pull request #8523: [FLINK-12481][runtime] Invoke timer callback in task thread (via mailbox)
Date Wed, 29 May 2019 07:22:20 GMT
1u0 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_r288425195
 
 

 ##########
 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:
   To clarify. With this change, the `ProcessingTimeCallback` becomes non relevant to `SystemProcessingTimeService`,
it can be substituted by any class (e.g. just `Object`) - this object is just passed on timer
registration as data and returned back by the time service when the timer fires.
   
   The real callback interface now becomes `ScheduledCallbackExecutionContext`.

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