Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/16696#discussion_r99837596
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala
---
@@ -717,7 +717,8 @@ object Limit {
}
}
-case class GlobalLimit(limitExpr: Expression, child: LogicalPlan) extends
UnaryNode {
+abstract class LimitNode extends UnaryNode {
+ def limitExpr: Expression
--- End diff --
do we assume `limitExpr` is foldable? but seems there is no type checking
logic for it.
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