Github user jburwell commented on the pull request: https://github.com/apache/cloudstack/pull/1331#issuecomment-210081688 @rafaelweingartner The issue is not one of style but performance and availability. The garbage collector skips reachability evaluations of ``final static`` fields where it must perform those for instance variables. This cost adds up when a large number of object is allocated and deallocated. Second, you cannot log from a static method. Our standard in the codebase is to have ``final static`` loggers, and I don't see a compelling reason to step away from it. In terms of the Mockito approach, I wouldn't have an opinion if the unit test where not requiring us to change the class. The test should always be the servant of the system not the other way around. Personally, I find mocks to be an obfuscation especially when the thing being mocked provides a standard mechanism to observe side-effects.
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