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https://issues.apache.org/jira/browse/RANGER-5764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Abhishek Singh resolved RANGER-5764.
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Fix Version/s: 3.0.0
Resolution: Fixed
> Enhancing the performance of RangerUserStore
> ---------------------------------------------
>
> Key: RANGER-5764
> URL: https://issues.apache.org/jira/browse/RANGER-5764
> Project: Ranger
> Issue Type: Improvement
> Components: Ranger
> Affects Versions: 3.0.0
> Reporter: Abhishek Singh
> Assignee: Abhishek Singh
> Priority: Major
> Fix For: 3.0.0
>
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> Currently, when RangerUserStoreCache refreshes the user store from the
> database, it always attempts to load user-to-group mappings. In large
> deployments with a high number of users and groups, loading these mappings on
> every refresh can significantly increase DB load time and memory footprint,
> even when downstream consumers do not require the user-group mappings.
> Therefore a flag based approach can be Proposed to include or exclude the
> user-group mappings .
> Currently this line in RangerUserStoreCache.java
> final Map<String, Set<String>> userGroups = xUserMgr.getUserGroups() , is
> the main case of the performance issues in large environments .
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