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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10040) CBO (Calcite Return Path): Pluggable cost modules [CBO branch]
Date Wed, 08 Apr 2015 03:33:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14484656#comment-14484656
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Lefty Leverenz commented on HIVE-10040:
---------------------------------------

Doc note:  This adds *hive.cbo.costmodel.extended* to HiveConf.java, so it will need to be
documented in the wiki when cbo-branch merges to trunk.  Should it be mentioned in the CBO
design doc as well as the Configuration Properties?

* [Cost-based optimization in Hive | https://cwiki.apache.org/confluence/display/Hive/Cost-based+optimization+in+Hive]
* [Configuration Properties | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties]
** could put it next to [hive.cbo.enable | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.cbo.enable]

> CBO (Calcite Return Path): Pluggable cost modules [CBO branch]
> --------------------------------------------------------------
>
>                 Key: HIVE-10040
>                 URL: https://issues.apache.org/jira/browse/HIVE-10040
>             Project: Hive
>          Issue Type: Sub-task
>          Components: CBO
>    Affects Versions: cbo-branch
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>              Labels: TODOC-CBO
>             Fix For: cbo-branch
>
>         Attachments: HIVE-10040.01.cbo.patch, HIVE-10040.02.cbo.patch, HIVE-10040.03.cbo.patch,
HIVE-10040.cbo.patch
>
>
> We should be able to deal with cost models in a modular way. Thus, the cost model should
be integrated within a Calcite MD provider that is pluggable.



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