Di Li created AMBARI-15470:
------------------------------

             Summary: List of decommission-allowed components should be stack 
driven
                 Key: AMBARI-15470
                 URL: https://issues.apache.org/jira/browse/AMBARI-15470
             Project: Ambari
          Issue Type: Improvement
          Components: ambari-server, ambari-web
    Affects Versions: trunk
            Reporter: Di Li
             Fix For: trunk


decommission-allowed components are currently a hardcoded list in 
stack_service_component.js

isDecommissionAllowed: Em.computed.existsIn('componentName', ['DATANODE', 
'TASKTRACKER', 'NODEMANAGER', 'HBASE_REGIONSERVER']),


This should be stack driven by examine metainfo.xml looking for DECOMMISSION 
custom command or a designated flag.



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