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https://issues.apache.org/jira/browse/HIVE-29652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18086942#comment-18086942
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Ruben Q L commented on HIVE-29652:
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See discussion here:
https://github.com/apache/hive/pull/6503#discussion_r3356327939
> Improve range selectivity estimations in the absence of histograms
> ------------------------------------------------------------------
>
> Key: HIVE-29652
> URL: https://issues.apache.org/jira/browse/HIVE-29652
> Project: Hive
> Issue Type: Improvement
> Components: CBO
> Reporter: Ruben Q L
> Priority: Major
>
> FilterSelectivityEstimator currently returns some hardcoded values for range
> selectivity when histograms are not present, the goal of the current ticket
> is to explore the possibility of providing better estimations in these cases.
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