public void handleAddressNodeMapping(Address address, String nodeId) throws Exception
public void handleAddressNodeMapping(Address address, int nodeId) throws Exception
   public void handleAddressNodeMapping(Address address, String nodeId) throws Exception   {      lock.writeLock().acquire();            try      {          nodeIdAddressMap.put(nodeId, address);      }      finally      {         lock.writeLock().release();      }   }