Github user srowen commented on the issue:
https://github.com/apache/spark/pull/22241
@kiszk I guess it's because in this case the underlying value type is a
primitive like int or long, so null can't be returned?--- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
