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

["Rui Wang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-4030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17119290#comment-17119290 ] 

Rui Wang commented on CALCITE-4030:
-----------------------------------

This Jira is opened to keep a tracking for this special assert error. We will need to investigate the root case before make top-down optimization as default.

> 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
>            Priority: Major
>
> 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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