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https://issues.apache.org/jira/browse/CALCITE-4428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17243820#comment-17243820
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Jiatao Tao commented on CALCITE-4428:
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When rename RelNode via VolcanoPlanner#rename(RelNode rel), we may remove rel
from its subset: "subset.set.rels.remove(rel)" if we found equiv rel, so we
should remove the equiv rel from mapRel2Subset, or we will have lots of
outdated rule match.
> Remove the equiv rel from mapRel2Subset when merging set
> --------------------------------------------------------
>
> Key: CALCITE-4428
> URL: https://issues.apache.org/jira/browse/CALCITE-4428
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Jiatao Tao
> Assignee: Jiatao Tao
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
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