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Posted to issues@hive.apache.org by "Prasanth Jayachandran (JIRA)" <ji...@apache.org> on 2018/06/08 09:27:00 UTC
[jira] [Updated] (HIVE-19376) Statistics: switch to 10bit HLL by
default for Hive
[ 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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