Github user mgaido91 commented on the issue:
https://github.com/apache/spark/pull/22450
@cloud-fan I checked the other operations and they have no issue with
negative scale. This is the reason why this fix is only for Divide: it is the
only operation which wasn't dealing it properly.
I also thought about doing that but I chose not to do in order not to
introduce regressions. Anyway I'll argument more in your PR. Thanks.
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