Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/19730#discussion_r150419908
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
---
@@ -1015,7 +1015,9 @@ case class Cast(child: Expression, dataType:
DataType, timeZoneId: Option[String
}
val rowClass = classOf[GenericInternalRow].getName
val result = ctx.freshName("result")
+ ctx.addMutableState(s"$rowClass", result, "")
val tmpRow = ctx.freshName("tmpRow")
+ ctx.addMutableState("InternalRow", tmpRow, "")
--- End diff --
ditto
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