cloud-fan commented on pull request #31708:
URL: https://github.com/apache/spark/pull/31708#issuecomment-789444406


   @c21 It's great to see this PR improves the TPCDS plans, but it also reveals 
that the plan change is hard to check sometime.
   
   Can you help to improve the test framework to include the number of 
shuffles, reused shuffles, subqueries, and reused subqueries in the golden 
files?


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