Github user shivaram commented on the pull request:
https://github.com/apache/spark/pull/1632#issuecomment-51873138
@sarutak You are right that using poll wouldn't clear up the internal state
in ConnectionManager. I think @JoshRosen 's idea of using a shared timer pool
or re-using some of the existing thread pools (the future execution context ?)
might be fine.
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