Vineet Garg updated HIVE-22408:
    Status: Patch Available  (was: Open)

> The fix for CALCITE-2991 creates wrong results on edge case
> -----------------------------------------------------------
>                 Key: HIVE-22408
>                 URL: https://issues.apache.org/jira/browse/HIVE-22408
>             Project: Hive
>          Issue Type: Bug
>          Components: CBO
>    Affects Versions: 3.1.2
>            Reporter: Steve Carlin
>            Assignee: Vineet Garg
>            Priority: Major
>         Attachments: HIVE-22408.1.patch, HIVE-22408.2.patch, 
> HIVE-22408.3.patch, HIVE-22408.4.patch, HIVE-22408.5.patch
> The Calcite upgrade from 1.19 to 1.21 includes a fix for CALCITE-2991.  This 
> patch causes a failure in subquery_ALL.q
> In order to proceed with the upgrade, the patch was bypassed by creating the 
> HiveRelMdMaxRowCount class which overrides the behavior in Calcite.  
> In order to recreate the regression, remove this file and the references to 
> the class in HiveDefaultRelMetadataProvider.
> This Jira is being created before the HIVE-22274 PR has been pushed, so 
> please wait until that is pushed before working on this.

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