[jira] [Created] (RANGER-4905) Reduce memory needed to create Ranger policy engine

["Abhay Kulkarni (Jira)" <ji...@apache.org>]

Abhay Kulkarni created RANGER-4905:
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             Summary: Reduce memory needed to create Ranger policy engine
                 Key: RANGER-4905
                 URL: https://issues.apache.org/jira/browse/RANGER-4905
             Project: Ranger
          Issue Type: Improvement
          Components: Ranger
            Reporter: Abhay Kulkarni
            Assignee: Abhay Kulkarni


Ranger policy engine creates a RangerPolicyResourceMatcher object for every resource specified either in policy or in a tag association. PolicyResourceMatcher, for the services that have more than one level in their resource hierarchy, consists of RangerResourceMatcher objects for each level in the resource-level hierarchy for the resource. In many cases, this leads to creation of multiple RangerResourceMatchers with identical resource specification.

This Jira avoids creation of multiple RangerResourceMatcher objects by maintaining a cache of them in the RangerPluginContext object associated with the Ranger policy engine, thereby reducing policy engine's memory needs.



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