Github user hnfgns commented on the pull request:
https://github.com/apache/drill/pull/503#issuecomment-219573757
I see that you are enabling task hand-off for the first task in the
serializer as well. I am not convinced that this approach will for sure fix the
deadlock case for RPCs and foreman failure case. I do not have time now but I
will think about this issue.
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