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Posted to dev@hive.apache.org by "Namit Jain (JIRA)" <ji...@apache.org> on 2009/06/16 02:36:07 UTC

[jira] Resolved: (HIVE-561) Make Hash aggregation threshold configurable

     [ https://issues.apache.org/jira/browse/HIVE-561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Namit Jain resolved HIVE-561.
-----------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

Committed. Thanks Zheng

> Make Hash aggregation threshold configurable
> --------------------------------------------
>
>                 Key: HIVE-561
>                 URL: https://issues.apache.org/jira/browse/HIVE-561
>             Project: Hadoop Hive
>          Issue Type: Improvement
>    Affects Versions: 0.3.0, 0.3.1
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>            Priority: Minor
>             Fix For: 0.4.0
>
>         Attachments: HIVE-561.1.patch, HIVE-561.2.patch, HIVE-561.3.patch
>
>
> Currently we stop doing Hash aggregation after seeing 100K rows and the reduction is below 50%. We should make it configurable.

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