Github user piaozhexiu commented on the pull request:
https://github.com/apache/spark/pull/5536#issuecomment-94636451
> My suspicion is that simply capping numExecutorsPending at 0 may turn out
to be a duct tape solution, and that we're slowly leaking downwards.
@sryza , I cannot prove whether my fix is right or wrong, and I'll leave
that to you guys. But at least, I don't see any side effects that you're
worried about w/ my fix. It seems to work nicely.
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