anchor.diff:  Periscope can work with any Hadoop 2/ YARN cluster provisioned with Apache Ambari, and supports any YARN application.
   
   ##Clusters [/clusters/{id}]
  -###Add a cluster to be monitored by Periscope[POST]
  -Add a Hadoop cluster to be monitored by Periscope. Note that Periscope does not require any pre-installation of components on cluster nodes. To link a Hadoop cluster with Periscope the only required this is the Apache Ambari REST API endpoint.
  +###Add a cluster to be monitored[POST]
  +Add a Hadoop cluster to be monitored by Periscope. Note that Periscope does not require any pre-installation of components on cluster nodes. 
  +To link a Hadoop cluster with Periscope the only required this is the Apache Ambari REST API endpoint.
   
   + Parameters
       + id (required String `id`) ... The id of the cluster to be monitored.
  
positive.code: 
  
  ##  Clusters [/clusters/{id}]
  ###Retrieve information about a cluster monitored by Periscope[GET]
  
  + Parameters
      + id (required String `id`) ... The id of the cluster.
  
  + Request
          {
  
          }
  
negative.code: =======
  
  #Group Configuration
  The CapacityScheduler is designed to run Hadoop applications as a shared, multi-tenant cluster in an operator-friendly manner while maximizing the throughput and the utilization of the cluster.
  Periscope facilites the reconfiguration of the CapacityScheduler, used by the application movement/re-prioritization of running applications.
  
  ##Configuration [/clusters/{clusterId}/configurations]
  ###Reload the Hadoop YARN configuration [POST]
  
  + Parameters
      + clusterId (required String `clusterID`) ... The id of the cluster.
  