Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/5004#issuecomment-78974397
I tend to favor this change for `ContextCleaner` and
`AsynchronousListenerBus`, because an exception there kills a thread that is
clearly intended to run forever. I'm not as sure about `FsHistoryProvider`,
since there it is not as clear (yet) that the `Runnable` should cause the
worker to die if it hits an exception. why this one?
I'd like it if, say, @aarondav might comment, since he added one of the
lines being changed.
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