[jira] [Updated] (RANGER-3951) optimize memory used for tags in plugins and server

["Madhan Neethiraj (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/RANGER-3951?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Madhan Neethiraj updated RANGER-3951:
-------------------------------------
    Attachment: RANGER-3951.patch

> optimize memory used for tags in plugins and server
> ---------------------------------------------------
>
>                 Key: RANGER-3951
>                 URL: https://issues.apache.org/jira/browse/RANGER-3951
>             Project: Ranger
>          Issue Type: Improvement
>          Components: admin, plugins
>            Reporter: Madhan Neethiraj
>            Assignee: Madhan Neethiraj
>            Priority: Major
>             Fix For: 3.0.0, 2.4.0
>
>         Attachments: RANGER-3951.patch
>
>
> In deployments using large number of tags, significant amount of memory usage can be reduced by:
>  * cache has as many instances of a tag as the number of resource associations. Enabling dedup of tags eliminates duplicate tag instances
>  * not initializing few collection members with new collection instances (Map, List) - as much as 25% of memory needed to cache tags
>  * skipping serialization of empty collections can reduce the size of the JSON downloaded to plugin
>  



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