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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-9856) CBO (Calcite Return Path): Join cost calculation improvements and algorithm selection implementation [CBO branch]
Date Thu, 12 Mar 2015 18:34:38 GMT

     [ https://issues.apache.org/jira/browse/HIVE-9856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jesus Camacho Rodriguez updated HIVE-9856:
------------------------------------------
    Attachment: HIVE-9856.03.cbo.patch

[~mmokhtar], the latest version of the patch applies cleanly to the CBO branch and solves
and issue with the requirements that was raised by [~jpullokkaran].

> CBO (Calcite Return Path): Join cost calculation improvements and algorithm selection
implementation [CBO branch]
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-9856
>                 URL: https://issues.apache.org/jira/browse/HIVE-9856
>             Project: Hive
>          Issue Type: Sub-task
>          Components: CBO
>    Affects Versions: cbo-branch
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>             Fix For: cbo-branch
>
>         Attachments: HIVE-9856.01.cbo.patch, HIVE-9856.02.cbo.patch, HIVE-9856.03.cbo.patch,
HIVE-9856.cbo.patch
>
>
> This patch implements more precise cost functions for join operators that may help us
decide which join algorithm we want to execute directly in the CBO.



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