Github user srowen commented on the issue:
https://github.com/apache/spark/pull/16451
OK right, so the problem is still fundamentally about not deleting open
files. The recursive deletion itself is OK on Windows.
I sort of still favor using Utils.deleteRecursively and catching the
exception for consistency. The one thing that could let us do is only ignore
the exception on Windows, in the tests, because we don't expect any such error
on other OSes.
What do you think, is that overkill?
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