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https://issues.apache.org/jira/browse/HIVE-21928?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HIVE-21928 started by Jesus Camacho Rodriguez.
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> Fix for statistics annotation in nested AND expressions
> -------------------------------------------------------
>
> Key: HIVE-21928
> URL: https://issues.apache.org/jira/browse/HIVE-21928
> Project: Hive
> Issue Type: Bug
> Components: Physical Optimizer
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Critical
> Attachments: HIVE-21928.patch
>
>
> Discovered while working on HIVE-21867. Having predicates with nested AND
> expressions may result in different stats, even if predicates are basically
> similar (from stats estimation standpoint).
> For instance, stats for {{AND(x=5, true, true)}} are different from {{x=5}}.
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