Hoss Man created SOLR-5919:
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             Summary: AbstractFullDistribZkTestBase: control server thinks it's 
part of the cloud, takes overseer role
                 Key: SOLR-5919
                 URL: https://issues.apache.org/jira/browse/SOLR-5919
             Project: Solr
          Issue Type: Bug
            Reporter: Hoss Man


I was banging my head trying to figure out why SOLR-5795 combined with 
SOLR-5823 wasn't working when I noticed something interesting as a result of 
some gratuituous logging:

* the control server thinks it's in running in cloud mode, in a cluster 
consisting solely of itself, and acts as overseer
* none of the nodes in the actual cluster being tested think they are the 
overseer

...i haven't dug in very deep, but i suspect that some combination of the 
control server starting up first and thinking it's part of zk is leading to it 
becoming the overseer, even thought it evidently never thinks it's one of the 
leaders/replicas of the cloud cluster.

It's hard to see this problem w/o SOLR-5823 -- i'll update the patch there with 
a test showing hte problem, but i wanted to make sure it got tracked in it's 
own bug.





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