Github user marmbrus commented on the pull request:
https://github.com/apache/spark/pull/4995#issuecomment-91955538
@DoingDone9, really? In my tests it null pointers when you try to get the
session state on an executor. It seems like they made this change in Hive 13
on purpose because you should not be accessing session state from an executor.
If this is something we really want to support, I think we should instead
add a rule to `prepareForExecution` that rewrite this expression statically
with the current database. Until then I propose we close this issue.
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