Github user JoshRosen commented on the pull request:
https://github.com/apache/spark/pull/4869#issuecomment-77006078
@andrewor14 Do you think that there's any risk of a cleanup task hanging
indefinitely and thus preventing the SparkContext from being stopped? That's
the only problem that I could anticipate here.
Overall, this fix looks good to me. Thanks for tracking down this race!
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