Github user andrewor14 commented on the pull request:
https://github.com/apache/spark/pull/7716#issuecomment-128844878
I've bumped the priority of this issue in case it is a regression.
@KaiXinXiaoLei I'm trying to understand how it's possible for an executor
ID to be in both `knownExecutors` and `executorsPendingToRemove`. In the drive
logs of the application that had this negative number, can you search for the
this message `with no recent heartbeats`? I wonder whether this is actually
related to the heartbeat receiver mechanism.
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