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Posted to issues@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2016/07/21 12:46:20 UTC

[jira] [Work started] (HIVE-14307) Account for top operator network cost to choose side table in MapJoin conversion

     [ https://issues.apache.org/jira/browse/HIVE-14307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HIVE-14307 started by Jesus Camacho Rodriguez.
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> Account for top operator network cost to choose side table in MapJoin conversion
> --------------------------------------------------------------------------------
>
>                 Key: HIVE-14307
>                 URL: https://issues.apache.org/jira/browse/HIVE-14307
>             Project: Hive
>          Issue Type: Bug
>          Components: CBO
>    Affects Versions: 2.1.0, 2.2.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-14307.patch
>
>
> This extends HIVE-13096 so the heuristic can take into account top operators that produce large number of rows. In the future, we should choose the side based on total latency for the input.



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