Github user tdas commented on the pull request:
https://github.com/apache/spark/pull/2056#issuecomment-53469866
This could be an acceptable solution, but we dont know whether 10 * default
akka timeout is a good threshold either. The error is happening because we made
the ContextCleaner block on each deletion event (rdd, broadcast, or shuffle)
and shuffles can take a long time to be deleted. Given that the RC is imminent,
its better to not change for all blocks and make a narrower change in the
context cleaner - not wait for shuffle cleanups to complete.
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