curcur edited a comment on pull request #16653:
URL: https://github.com/apache/flink/pull/16653#issuecomment-891622506


   I have a bit concern of this fix:
   
   this change swallows all "RejectedExecutionException" no matter it is 
because of task finish or not.
   
   The right way is not to submit mailbox execution after the task finishes, or 
at least identify this case.
   
   I think there should be similar problems for other registered timers, maybe 
we can also unregister this timer before the task finishes?


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