@namespace("org.apache.hadoop.yarn")
protocol ResourceTracker {

  import idl "yarn/yarn-api/src/main/avro/yarn-types.genavro";
  
  // ResourceTracker
  record NodeID {
    int id;
  }

  record NodeHealthStatus {
    boolean isNodeHealthy;
    union {string, null} healthReport;
    long lastHealthReportTime;
  }

  record NodeStatus {
    NodeID nodeId;
	int responseId;
	long lastSeen;
    map<array<org.apache.hadoop.yarn.Container>> containers;
	NodeHealthStatus nodeHealthStatus;
  }

  record RegistrationResponse {
    NodeID nodeID;
    union {bytes, null} secretKey;
  }

  record HeartbeatResponse {
    int responseId;
    boolean reboot;
    array<org.apache.hadoop.yarn.Container> containersToCleanup;
    array<org.apache.hadoop.yarn.ApplicationID> appplicationsToCleanup;
  }
  
  RegistrationResponse registerNodeManager(string node, org.apache.hadoop.yarn.Resource resource) throws YarnRemoteException;
  HeartbeatResponse nodeHeartbeat(NodeStatus nodeStatus) throws YarnRemoteException;
  
}