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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16023) Wrong estimation for number of rows generated by IN expression
Date Fri, 24 Feb 2017 00:07:44 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15881601#comment-15881601
] 

Ashutosh Chauhan commented on HIVE-16023:
-----------------------------------------

+1 
All the log messages should be at debug(). Also log estimated row count for IN.

> Wrong estimation for number of rows generated by IN expression
> --------------------------------------------------------------
>
>                 Key: HIVE-16023
>                 URL: https://issues.apache.org/jira/browse/HIVE-16023
>             Project: Hive
>          Issue Type: Bug
>          Components: Statistics
>    Affects Versions: 2.2.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-16023.patch
>
>
> Code seems to be wrong, as we are factoring the number of rows to create the multiplying
factor, instead of NDV for given column(s) and NDV in IN clause.



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