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