Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/7431#issuecomment-122156071
> I'm guessing there might be situations it doesn't recognize the
disconnect right away.
That's the only case in which this code might help; but does that really
happen? The executor process is already gone (otherwise YARN wouldn't notify
the AM). The disconnection message has to go through the akka queues to get to
the destination, but so do the messages being sent here.
So with this code, unless the disconnect message can somehow be lost,
you'll always end up with that `ERROR` log, because the two code paths and sort
of redundant.
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