[jira] [Commented] (SENTRY-1961) Optimize memory usage for SimplePrivilegeCache

["Alexander Kolbasov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SENTRY-1961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16176937#comment-16176937 ] 

Alexander Kolbasov commented on SENTRY-1961:
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What is the proposed more efficient representation?

> Optimize memory  usage for SimplePrivilegeCache
> -----------------------------------------------
>
>                 Key: SENTRY-1961
>                 URL: https://issues.apache.org/jira/browse/SENTRY-1961
>             Project: Sentry
>          Issue Type: Task
>          Components: Sentry
>    Affects Versions: 2.0.0
>            Reporter: Na Li
>            Assignee: Na Li
>
> The implementation of SimplePrivilegeCache and in particular the 2 map<String, Set<String>> fields, cachedAuthzPrivileges and wildCardAuthz is not memory efficient. The strings stored in these structures can be quite long e.g. (server=server1->database=b1, (server=server1->database=b1->action=insert)). For really big installations with lots of entities (roles and privileges) these fields may end up taking some non-substantial amount of memory. 
> We should come up with of a more efficient memory representation to implement PrivilegeCache



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