beliefer commented on code in PR #44527:
URL: https://github.com/apache/spark/pull/44527#discussion_r1438237574
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/encoders/ExpressionEncoder.scala:
##########
@@ -325,11 +325,17 @@ case class ExpressionEncoder[T](
assert(serializer.forall(_.references.isEmpty), "serializer cannot reference
any attributes.")
assert(serializer.flatMap { ser =>
val boundRefs = ser.collect { case b: BoundReference => b }
- assert(boundRefs.nonEmpty,
- "each serializer expression should contain at least one
`BoundReference`")
+ assert(boundRefs.nonEmpty || isEmptyStruct(ser),
+ "each serializer expression should contain at least one `BoundReference`
" +
+ "or be an empty struct")
Review Comment:
The error msg is not clear.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
