dongjoon-hyun commented on a change in pull request #24082:
[SPARK-27123][SQL][FOLLOWUP] Use isRenaming check for limit too.
URL: https://github.com/apache/spark/pull/24082#discussion_r265223386
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
##########
@@ -699,20 +703,13 @@ object CollapseProject extends Rule[LogicalPlan] {
agg.copy(aggregateExpressions = buildCleanedProjectList(
p.projectList, agg.aggregateExpressions))
}
- case p1 @ Project(_, g @ GlobalLimit(_, l @ LocalLimit(_, p2: Project))) =>
- if (haveCommonNonDeterministicOutput(p1.projectList, p2.projectList)) {
- p1
- } else {
- val newProjectList = buildCleanedProjectList(p1.projectList,
p2.projectList)
- g.copy(child = l.copy(child = p2.copy(projectList = newProjectList)))
- }
- case p1 @ Project(_, l @ LocalLimit(_, p2: Project)) =>
- if (haveCommonNonDeterministicOutput(p1.projectList, p2.projectList)) {
- p1
- } else {
- val newProjectList = buildCleanedProjectList(p1.projectList,
p2.projectList)
- l.copy(child = p2.copy(projectList = newProjectList))
- }
+ case Project(l1, g @ GlobalLimit(_, limit @ LocalLimit(_, p2 @ Project(l2,
_))))
Review comment:
If there is `Alias`, It wasn't. That is the point of my previous PR.
Please see `IsRenaming` logic here. This considers that case, too.
-
https://github.com/apache/spark/pull/24082/files#diff-a636a87d8843eeccca90140be91d4fafL764
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