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From "Prasanth Jayachandran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-19376) Statistics: switch to 10bit HLL by default for Hive
Date Fri, 08 Jun 2018 09:27:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-19376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Prasanth Jayachandran updated HIVE-19376:
-----------------------------------------
    Resolution: Not A Problem
        Status: Resolved  (was: Patch Available)

Closing it as HIVE-18079 already changed the default. 

> Statistics: switch to 10bit HLL by default for Hive
> ---------------------------------------------------
>
>                 Key: HIVE-19376
>                 URL: https://issues.apache.org/jira/browse/HIVE-19376
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Statistics
>            Reporter: Gopal V
>            Assignee: Gopal V
>            Priority: Major
>         Attachments: HIVE-19376.1.patch
>
>
> This reduces the memory usage for the metastore cache and the size of bit-vectors in
the DB by 16x.



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