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Posted to dev@ranger.apache.org by "Madhan Neethiraj (Jira)" <ji...@apache.org> on 2022/09/28 05:57:00 UTC

[jira] [Updated] (RANGER-3934) improve tag cache handling to reduce resource usage

     [ https://issues.apache.org/jira/browse/RANGER-3934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Madhan Neethiraj updated RANGER-3934:
-------------------------------------
    Attachment: RANGER-3934.patch

> improve tag cache handling to reduce resource usage
> ---------------------------------------------------
>
>                 Key: RANGER-3934
>                 URL: https://issues.apache.org/jira/browse/RANGER-3934
>             Project: Ranger
>          Issue Type: Improvement
>          Components: admin
>            Reporter: Madhan Neethiraj
>            Assignee: Madhan Neethiraj
>            Priority: Major
>             Fix For: 3.0.0, 2.4.0
>
>         Attachments: RANGER-3934.patch
>
>
> Ranger admin server maintains a cache of tags so that requests from plugins can be served as quickly as possible. If there were changes to tags since the cache was last loaded/updated, the cache is refreshed. Ranger supports an option to record the changes and apply them on top of existing cache - this minimizes the resources (memory, CPU) needed to rebuild the cache. The cache update implementation can be optimized to minimize objects loaded from db, and also replace use of Map with Set in several places.



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