[GitHub] [incubator-kyuubi] bowenliang123 commented on issue #3607: [Umbrella] RangerSparkExtension support {OWNER} variable in Ranger Policy

[GitBox <gi...@apache.org>]

bowenliang123 commented on issue #3607:
URL: https://github.com/apache/incubator-kyuubi/issues/3607#issuecomment-1277722485

   This would be helpful for applying {OWNER} to policies.
   
   But two problem to consider about this ,
   1. is it investigating the owner for all tables even with no {OWNER} rules on them?  This will cause a heavy cpu time to fetch these information, and additional cache will leave more memory footprints to it .
   2. what is the proper caching and evicting strategy for caching table owners ? LTT or max cache counts will introducing worries for missed queries, whether they will be fetched again which could causing more action and load in 1.
   


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