Github user JoshRosen commented on the pull request:
https://github.com/apache/spark/pull/2824#issuecomment-59468593
Maybe this is being overly-conservative, but could we add an undocumented
configuration option that allows users to bypass the `transferTo` here? If we
ship 1.1.1 or 1.2 and this bug resurfaces, it would be nice if there was a way
for users to revert back to the older version of this code without having to
recompile. A lot of users can't simply upgrade their kernel, so I think we
need to offer an easy workaround for them.
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