@Override
  public synchronized Map<String, Object> toMap() {
    return this.snapshot ? this.callInfoMap : generateCallInfoMap();
  }
Registers current handler client details.
@param clientAddress the address of the current client
@param remotePort    the port from which the client connected
hbase-server/src/main/java/org/apache/hadoop/hbase/monitoring/MonitoredRPCHandlerImpl.java