Github user dlyle65535 commented on the issue:

    https://github.com/apache/incubator-metron/pull/415
  
    @merrimanr , @cestella - wrt management of configs from Ambari, the answer 
is kinda. Sensible default configurations are pushed with certain 
user-specified changes that allow the system to function. A complete list can 
be found looking at metron-env.xml.
    
    There is an EXTREMELY important side-effect to this that must not be 
forgotten. Any configuration that has even partial management by Ambari must 
not be modified outside of Ambari if one expects those changes to survive a 
service restart. Ambari will detect a change to the file and overwrite it.
    
    So, I don't know for sure, but I suspect this PR will introduce breaking 
changes to the MPack install which will be corrected during the work on 
METRON-653.


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