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Posted to issues@hive.apache.org by "Lefty Leverenz (JIRA)" <ji...@apache.org> on 2017/09/04 06:27:00 UTC

[jira] [Updated] (HIVE-17276) Check max shuffle size when converting to dynamically partitioned hash join

     [ https://issues.apache.org/jira/browse/HIVE-17276?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lefty Leverenz updated HIVE-17276:
----------------------------------
    Labels: TODOC3.0  (was: )

> Check max shuffle size when converting to dynamically partitioned hash join
> ---------------------------------------------------------------------------
>
>                 Key: HIVE-17276
>                 URL: https://issues.apache.org/jira/browse/HIVE-17276
>             Project: Hive
>          Issue Type: Bug
>          Components: Physical Optimizer
>    Affects Versions: 3.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>              Labels: TODOC3.0
>             Fix For: 3.0.0
>
>         Attachments: HIVE-17276.01.patch, HIVE-17276.02.patch, HIVE-17276.03.patch, HIVE-17276.patch
>
>
> Currently we only check that the max number of entries in the hashmap for a MapJoin surpasses a certain threshold to decide whether to execute a dynamically partitioned hash join.
> We would like to factor the size of the large input that we will shuffle for the dynamically partitioned hash join into the cost model too.



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