xndai commented on issue #1445: [CALCITE-3330] propagateCostImprovements() could result in stack over… URL: https://github.com/apache/calcite/pull/1445#issuecomment-529302728 I have a UT failure at MongoAdapterTest.testGroupByAvgSumCount() due to the operator sequence change. My understand is this does not actually affect the plan. But would appreciate if someone is more familiar with the background can review it. Thx.
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