[jira] [Created] (CALCITE-4030) Assert error during top-down optimization with Project/Filter Traits passdown and derivation

[Rui Wang (Jira)]

Rui Wang created CALCITE-4030:
---------------------------------

             Summary: Assert error during top-down optimization with 
Project/Filter Traits passdown and derivation 
                 Key: CALCITE-4030
                 URL: https://issues.apache.org/jira/browse/CALCITE-4030
             Project: Calcite
          Issue Type: Task
            Reporter: Rui Wang


For example, with https://github.com/apache/calcite/pull/1985, and enable 
top-down opt by set "calcite.planner.topdown.opt=true" in saffron.properties, 

run test case SortRemoveRuleTest.removeSortOverEnumerableHashJoin, we can see:


{code:java}
java.lang.AssertionError
        at 
org.apache.calcite.plan.volcano.OptimizeTask$RelNodeOptTask.execute(OptimizeTask.java:232)
        at 
org.apache.calcite.plan.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:553)
        at 
org.apache.calcite.tools.Programs$RuleSetProgram.run(Programs.java:327)
        at 
org.apache.calcite.prepare.PlannerImpl.transform(PlannerImpl.java:362)
        at 
org.apache.calcite.rel.rules.SortRemoveRuleTest.transform(SortRemoveRuleTest.java:77)
        at 
org.apache.calcite.rel.rules.SortRemoveRuleTest.removeSortOverEnumerableHashJoin(SortRemoveRuleTest.java:102)
{code}




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