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https://issues.apache.org/jira/browse/HIVE-13287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesus Camacho Rodriguez updated HIVE-13287:
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Attachment: HIVE-13287.01.patch
[~ashutoshc], new patch implements stats calculation for IN clauses natively
(without the IN 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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