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https://issues.apache.org/jira/browse/RANGER-1146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Abhay Kulkarni reassigned RANGER-1146:
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Assignee: Abhay Kulkarni
> Policy engine optimization: dynamic reordering of policy evaluation order
> -------------------------------------------------------------------------
>
> Key: RANGER-1146
> URL: https://issues.apache.org/jira/browse/RANGER-1146
> Project: Ranger
> Issue Type: Bug
> Components: plugins
> Reporter: Madhan Neethiraj
> Assignee: Abhay Kulkarni
>
> During initialization, the policy engine sorts the policy evaluators such
> that the policies most likely to match many requests are evaluated at the
> top. To aid this ordering, a eval-score is computed for each policy based on
> the contents of the policy - like users/groups, accessTypes, resource-values,
> etc. However, this order may not be the most efficient for the access request
> pattern at runtime. It will help to reorder the policies dynamically based on
> the number of decisions made by each policy. For example, each time a policy
> determines the result of an access request, its hit-score should be
> incremented. Periodically the policies should be reordered to place policies
> that made most decisions at the top - so that fewer policies need to be
> evaluated to determine the access request.
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