Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/19683
From the stack trace, it looks like at somewhere we cast a `Seq[Alias]` to
`Seq[Attribute]` and pass it to `Generate.unrequiredChildOuput`,--- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
