Github user zhichao-li commented on the pull request:
https://github.com/apache/spark/pull/6822#issuecomment-113370187
Any preference here? just found that the some other existing code would
throw exception during the type checking, so I guess it's fine to do the same
here. Hive return null for such case, but I guess it's not informative and
would confuse the user?
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