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https://issues.apache.org/jira/browse/HIVE-23361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17118391#comment-17118391
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Simhadri G commented on HIVE-23361:
-----------------------------------
merged to master
[https://github.com/apache/hive/commit/0cde39a7ddb4f8049e3b43724d929da25b045112]
> Optimising privilege synchroniser
> ---------------------------------
>
> Key: HIVE-23361
> URL: https://issues.apache.org/jira/browse/HIVE-23361
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Reporter: Simhadri G
> Assignee: Simhadri G
> Priority: Minor
> Attachments: hive-23361.1.patch, hive-23361.10.patch,
> hive-23361.11.patch, hive-23361.2.patch, hive-23361.3.patch,
> hive-23361.4.patch, hive-23361.5.patch, hive-23361.6.patch,
> hive-23361.7.patch, hive-23361.8.patch, hive-23361.9.patch, hive-23361.patch,
> hive-23361.patch
>
>
> Privilege synchronizer pulls the list of databases, tables and columns from
> the Hive Metastore. For each of these objects it fetches the privilege
> information and invokes HMS API to refresh the privilege information in HMS.
> This patch store the privilege information as bit string. This is done to
> reduce the size of the tbl_col_privs tables in metastore.
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