LuciferYang commented on a change in pull request #29689:
URL: https://github.com/apache/spark/pull/29689#discussion_r485393116
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/AttributeSet.scala
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@@ -105,10 +105,12 @@ class AttributeSet private (private val baseSet:
mutable.LinkedHashSet[Attribute
*/
def --(other: Iterable[NamedExpression]): AttributeSet = {
other match {
+ // SPARK-32755: `--` method behave differently under scala 2.12 and 2.13,
+ // use a Scala 2.12 based code to maintains the insertion order in Scala
2.13
case otherSet: AttributeSet =>
- new AttributeSet(baseSet -- otherSet.baseSet)
+ new AttributeSet(baseSet.clone() --= otherSet.baseSet)
Review comment:
ok ~
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