[jira] [Created] (CASSANDRA-16958) Prewarm role and credentials caches to avoid timeouts at startup

["Josh McKenzie (Jira)" <ji...@apache.org>]

Josh McKenzie created CASSANDRA-16958:
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             Summary: Prewarm role and credentials caches to avoid timeouts at startup
                 Key: CASSANDRA-16958
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16958
             Project: Cassandra
          Issue Type: Improvement
          Components: Feature/Authorization
            Reporter: Josh McKenzie
            Assignee: Josh McKenzie


With our current auth querying setup, you can end up with a thundering herd on reconnect due to delays on auth resolution.

We should instead allow the ability to do a 'select' on all roles and pre-load the cache before turning on native transport. Notably, this could present some unacceptable delays on start with a very large count of users (thousands), or someone who uses a third party auth system rather than the built-in authorizer so this should be configurable and opt-in.



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