Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/18906
BTW, what do we get if it returns `None` but it's non-nullable, NEP?--- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
