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https://issues.apache.org/jira/browse/HIVE-19376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16460146#comment-16460146
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Gopal V commented on HIVE-19376:
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This change already switches the metastore storage to 1kb instead of 16kb.
The parent task right above this JIRA is the one which adds backwards compat
for existing metastores which store the 14bit data.
> 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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