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https://issues.apache.org/jira/browse/CALCITE-5647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adam Kennedy updated CALCITE-5647:
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Summary: RelMdPopulationSize directly calls rel.estimateRowCount instead of
mq.getRowCount (was: RelMdPopulationSize directly calls rel.estimateRowCount
instead mq.getRowCount)
> RelMdPopulationSize directly calls rel.estimateRowCount instead of
> mq.getRowCount
> ---------------------------------------------------------------------------------
>
> Key: CALCITE-5647
> URL: https://issues.apache.org/jira/browse/CALCITE-5647
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.34.0
> Reporter: Adam Kennedy
> Priority: Minor
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> A few locations in Calcite call rel.estimateRowCount(mq) when they should
> instead call mq.getRowCount(red).
> We detected this because we implemented row count estimation entirely within
> an alternative handle instead of RelMdRowCount, and then override
> estimateRowCount to ensure the custom handler is user, by throwing an
> unreachable code exception.
> A few places in Calcite trigger these unreachable exceptions because they do
> not use mq.getRowCount.
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