def AddStats(ClientStats):
    """Test function"""
    global NodesCheckedin, NodesLock
#    print "In AddStats"
    stats = json.loads(ClientStats)

    for host in stats.keys():        
        for filesystem in stats[host]:
            if filesystem not in BWFileSystems.keys():
                sys.stderr.write ("skipping " + filesystem + ", not a known file system \n")
                continue
            else:
                AggrQueueDict[filesystem].put(stats[host][filesystem])
        
    with NodesLock:
        NodesCheckedin += 1
        
    return True
        sys.exit(-1)
    try:
        NumNodes = int(NumNodes)
    except ValueError:
        sys.stderr.write("Invalid PBS_NUM_NODES value,", NumNodes," exiting. \n")
        sys.exit(-1)
        
    try:
        Port = int(JobID.split(".")[0])
    except ValueError:
        sys.stderr.write("Invalid PBS_JOBID value,", JobID," exiting. \n")
        sys.exit(-1)

#    print "JobID is", JobID
    
    for fs in BWFileSystems.keys():
        AggrQueueDict[fs] = Queue.Queue()
        AggrThreads.append(Thread(target=AggregateStats, args=(fs,)))
        AggrThreads[-1].start()
        
    http_server = pyjsonrpc.ThreadingHttpServer(
                                            server_address=(gethostname(), Port),
                                            RequestHandlerClass=RequestHandler
                                            )
    
        
    # Start server in a different thread    
    ServerThread = Thread(target=runServer)
    ServerThread.start()
    
    for thrd in AggrThreads: