AngersZhuuuu commented on issue #26437: [SPARK-29800][SQL] Plan non-correlated Exists 's subquery in PlanSubqueries URL: https://github.com/apache/spark/pull/26437#issuecomment-558476143 > For top-level limit, we use a special physical plan `CollectLimitExec`, which doesn't have a shuffle. The perf should be the same, but we can avoid adding a new physical node and planner change. Yea, I will try these way to see the change.
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