viirya commented on a change in pull request #33958:
URL: https://github.com/apache/spark/pull/33958#discussion_r709305004
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File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/CollapseProjectSuite.scala
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@@ -121,6 +121,16 @@ class CollapseProjectSuite extends PlanTest {
comparePlans(optimized, correctAnswer)
}
+ test("do not collapse project if non-cheap expressions will be repeated") {
Review comment:
Could you add JIRA number?
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