Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/19873#discussion_r155129282
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala
---
@@ -881,3 +881,10 @@ case class Deduplicate(
override def output: Seq[Attribute] = child.output
}
+
+/** A logical plan for setting a barrier of analysis */
+case class AnalysisBarrier(child: LogicalPlan) extends LeafNode {
--- End diff --
Ok.
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