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Posted to issues@hive.apache.org by "Shannon Ladymon (JIRA)" <ji...@apache.org> on 2016/05/31 23:06:12 UTC

[jira] [Commented] (HIVE-9331) get rid of pre-optimized-hashtable memory optimizations

    [ https://issues.apache.org/jira/browse/HIVE-9331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15308819#comment-15308819 ] 

Shannon Ladymon commented on HIVE-9331:
---------------------------------------

Doc done.

> get rid of pre-optimized-hashtable memory optimizations
> -------------------------------------------------------
>
>                 Key: HIVE-9331
>                 URL: https://issues.apache.org/jira/browse/HIVE-9331
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.15.0
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>             Fix For: 1.1.0
>
>         Attachments: HIVE-9331.01.patch, HIVE-9331.01.patch, HIVE-9331.02.patch, HIVE-9331.patch, HIVE-9331.patch
>
>
> These were added in 13 because optimized hashtable couldn't make it in; they reduced memory usage by some amount (10-25%), and informed the design of the optimized hashtable, but now extra settings and code branches are just confusing and may have their own bugs. Might as well remove them.



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