Github user rxin commented on the issue:
https://github.com/apache/spark/pull/22395
Looks like a use case for a legacy config.
On Mon, Sep 17, 2018 at 6:41 PM Wenchen Fan <[email protected]>
wrote:
> To clarify, it's not following hive, but following the behavior of
> previous Spark versions, which is same as hive.
>
> I also think returning left operand's type is more reasonable, but we
> should do it in another PR since it's a behavior change, and we should
also
> add migration guide for it.
>
> @mgaido91 <https://github.com/mgaido91> do you have time to do this
> change? Thanks!
>
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