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https://issues.apache.org/jira/browse/HIVE-13287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15216880#comment-15216880
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Ashutosh Chauhan commented on HIVE-13287:
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With previous patch of unnesting into AND/OR some of the estimates changed for
IN. I dont see any golden file update for stats with new patch, suggesting new
logic is not equivalent to old one. Can you comment why its better without
unnesting?
> Add logic to estimate stats for IN operator
> -------------------------------------------
>
> Key: HIVE-13287
> URL: https://issues.apache.org/jira/browse/HIVE-13287
> Project: Hive
> Issue Type: Bug
> Components: Statistics
> Affects Versions: 2.1.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-13287.01.patch, HIVE-13287.patch
>
>
> Currently, IN operator is considered in the default case: reduces the input
> rows to the half. This may lead to wrong estimates for the number of rows
> produced by Filter operators.
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