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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/09/27 02:25:09 UTC
[GitHub] [spark] LuciferYang commented on pull request #29871: [SPARK-32995][SQL] CostBasedJoinReorder optimizer rule should be idempotent
LuciferYang commented on pull request #29871:
URL: https://github.com/apache/spark/pull/29871#issuecomment-699574633
If there are multiple candidate plans with the same cost, I think `different inputs produce different outputs` is reasonableļ¼so only need ensure the same behavior in Scala 2.12 and Scala 2.13
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