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https://issues.apache.org/jira/browse/CALCITE-1048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17202349#comment-17202349
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Julian Hyde commented on CALCITE-1048:
--------------------------------------

[~ChunfengPei], Yes, please log a separate JIRA case for getMaxRowCount, and 
fully describe the problem.

This seems very closely related to CALCITE-3963. (Note that I mention 'fold' 
operator in both cases.)

> Make metadata more robust
> -------------------------
>
>                 Key: CALCITE-1048
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1048
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Julian Hyde
>            Priority: Major
>
> Following CALCITE-794, make metadata more robust and performant, so we can 
> safely derive metadata from a large RelNode graph.



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