Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/17302#discussion_r107199688
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/object.scala
---
@@ -41,7 +41,20 @@ object CatalystSerde {
}
def generateObjAttr[T : Encoder]: Attribute = {
- AttributeReference("obj", encoderFor[T].deserializer.dataType,
nullable = false)()
+ val deserializer = encoderFor[T].deserializer
+ val dataType = deserializer.dataType
+ val nullable = if (deserializer.childrenResolved) {
--- End diff --
I made a mistake. I should use `val nullable = if (deserializer.resolved)
{`. Even when I made this correction, `deserializer` is resolved.
In the above context, it is ensured that `encoderFor[T].deserializer` is
resolved in the assertion `require(inputAttributes.forall(_.resolved), "Input
attributes must all be resolved.")` at `case class UnresolvedDeserializer`.
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