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From "Zoltan Haindrich (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-19500) Prevent multiple selectivity estimations for the same variable in conjuctions
Date Wed, 23 May 2018 16:49:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-19500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16487617#comment-16487617
] 

Zoltan Haindrich commented on HIVE-19500:
-----------------------------------------

I've checked it myself failures are not related 

> Prevent multiple selectivity estimations for the same variable in conjuctions
> -----------------------------------------------------------------------------
>
>                 Key: HIVE-19500
>                 URL: https://issues.apache.org/jira/browse/HIVE-19500
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: 3.0.0, 3.1.0
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>             Fix For: 4.0.0
>
>         Attachments: HIVE-19500.01.patch, HIVE-19500.02.patch, HIVE-19500.03.patch
>
>
> see HIVE-19097 for problem description
> for filters like: {{(d_year in (2001,2002) and d_year = 2001)}} the current estimation
is around {{(1/NDV)**2}} (iff column stats are available) ....
> actually the source of the problem was a small typo in HIVE-17465 



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