Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/21061#discussion_r200572386
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
---
@@ -3261,3 +3261,339 @@ case class ArrayDistinct(child: Expression)
override def prettyName: String = "array_distinct"
}
+
+object ArraySetLike {
+ def throwUnionLengthOverflowException(length: Int): Unit = {
+ throw new RuntimeException(s"Unsuccessful try to union arrays with
$length " +
+ s"elements due to exceeding the array size limit " +
+ s"${ByteArrayMethods.MAX_ROUNDED_ARRAY_LENGTH}.")
+ }
+}
+
+
+abstract class ArraySetLike extends BinaryArrayExpressionWithImplicitCast {
+ override def dataType: DataType = left.dataType
--- End diff --
Oh, you are right. I will follow #21704
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