Sam Tunnicliffe created CASSANDRA-14687:
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Summary: Revert parameterization of AuthCacheMBean interface
Key: CASSANDRA-14687
URL: https://issues.apache.org/jira/browse/CASSANDRA-14687
Project: Cassandra
Issue Type: Bug
Components: Auth
Reporter: Sam Tunnicliffe
Assignee: Sam Tunnicliffe
Fix For: 4.0
In CASSANDRA-14662, a type parameter {{<T>}} and {{invalidate<T t>}} method
were added to {{AuthCacheMBean}} with the intention that this would
automatically expose via JMX the {{invalidate}} method from {{AuthCache}}
itself. Actually, this is not the case, as type erasure obscures the actual
type of the parameter and so JMX clients like jconsole and jmc disable access
to the method.
Only {{PasswordAuthenticator.CredentialsCache}} provided method like this
previously, via {{CredentialsCacheMBean extends AuthCacheMBean}}, so the most
straightforward fix is to just revert the change to {{AuthCacheMBean}}.
Future/alternative cache implementations can continue to specify their own
MBean interfaces to add specialised methods as before.
I should've caught this before committing the CASSANDRA-14662 as it broke a
couple of dtests in AuthTest, mea culpa.
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