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Posted to dev@hive.apache.org by "Harish Butani (JIRA)" <ji...@apache.org> on 2014/08/08 19:41:12 UTC

[jira] [Updated] (HIVE-7662) CBO: changes to Cost Model

     [ https://issues.apache.org/jira/browse/HIVE-7662?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Harish Butani updated HIVE-7662:
--------------------------------

    Summary: CBO: changes to Cost Model  (was: CBO: changes to COst Model)

> CBO: changes to Cost Model
> --------------------------
>
>                 Key: HIVE-7662
>                 URL: https://issues.apache.org/jira/browse/HIVE-7662
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Harish Butani
>            Assignee: Harish Butani
>
> - Model Join cost as Sum of Input sizes
> - Fix bug with NDV calculations. For now use Optiq's default formulas.
> - Model Cummulative cost to favor broad Plans over Deep Plans.



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