[jira] [Updated] (RANGER-4787) reduce plugin memory footprint by avoiding creation of unnecessary collections

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

     [ https://issues.apache.org/jira/browse/RANGER-4787?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Madhan Neethiraj updated RANGER-4787:
-------------------------------------
    Fix Version/s: 2.5.0

> reduce plugin memory footprint by avoiding creation of unnecessary collections
> ------------------------------------------------------------------------------
>
>                 Key: RANGER-4787
>                 URL: https://issues.apache.org/jira/browse/RANGER-4787
>             Project: Ranger
>          Issue Type: Improvement
>          Components: plugins
>            Reporter: Madhan Neethiraj
>            Assignee: Madhan Neethiraj
>            Priority: Major
>             Fix For: 3.0.0, 2.5.0
>
>
> Model package classes like RangerPolicy initialize collection members with a new collection object (ArrayList/HashMap/HashSet). Many of these members would likely remain empty, resulting in the initialization to be unnecessary. Instead of creating a new collection object, it will help to initialize with Collections.emptyList()/emptySet()/emptyMap() - to save memory while retaining non-null value for collection members.
> Also, set() on these members currently create a new collection object with a copy of the value to be set. This can be avoided by using the given value.



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