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Posted to dev@hive.apache.org by "Prasanth J (JIRA)" <ji...@apache.org> on 2014/08/14 22:04:18 UTC

[jira] [Updated] (HIVE-7734) Join stats annotation rule is not updating columns statistics correctly

     [ https://issues.apache.org/jira/browse/HIVE-7734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Prasanth J updated HIVE-7734:
-----------------------------

    Status: Patch Available  (was: Open)

> Join stats annotation rule is not updating columns statistics correctly
> -----------------------------------------------------------------------
>
>                 Key: HIVE-7734
>                 URL: https://issues.apache.org/jira/browse/HIVE-7734
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor, Statistics
>    Affects Versions: 0.14.0
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>             Fix For: 0.13.0
>
>         Attachments: HIVE-7734.1.patch
>
>
> HIVE-7679 is not doing the correct thing. The scale down/up factor updating column stats was wrong as ratio = newRowCount/oldRowCount is always infinite (oldRowCount = 0). The old row count should be retrieved from parent corresponding to the current column whose statistics is being updated.



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