Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/2393#issuecomment-58463679
Sorry for the late reply as well, but -1 since this introduces again
Commons IO `FileUtils` which broke the build recently. Use
`Utils.deleteRecursively`.
Why a new callback trait instead of just a `Runnable` or `Callable`?
Also, `Utils` already has a mechanism for deleting files at shutdown from
temp dirs. It would be good to avoid another shutdown hook.
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