Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/5029#issuecomment-82297290
OK, I basically left the code as-is with respect to recursive deletion.
Yeah adding a new trait to every test might be too much for the moment. I think
this zaps a few minor actual problems (stray temp files) and helps clean up
more stuff in more cases, and that leaves us with little practical problem.
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