Cameron Lee created SAMZA-1760:
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             Summary: SystemAdmin is not started properly in a few places
                 Key: SAMZA-1760
                 URL: https://issues.apache.org/jira/browse/SAMZA-1760
             Project: Samza
          Issue Type: Bug
            Reporter: Cameron Lee
            Assignee: Cameron Lee
             Fix For: 0.14.1


[https://github.com/apache/samza/pull/397] added a "start" and "stop" to the 
SystemAdmin interface. Most places got updated to manage the lifecycle. 
However, a few places were missed (or other changes were made more recently 
that did not correctly manage the lifecycle):
 # CoordinatorStreamSystemConsumer starts a SystemAdmin in its "start" method. 
However, it uses SystemAdmin.getSystemStreamMetadata in "register", which is 
called before "start". This class properly stops SystemAdmin.
 # SystemConsumerBench does not start/stop the SystemAdmin.
 # TestRunner does not start/stop the SystemAdmin.



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