def _FindServerInMapping(mapping, hashed):
 server_list = list(mapping.servers)
 val = _BisectHashList(server_list, 0, (len(server_list) - 1), hashed).index
 return val

def _FindServerInMapping ( mapping , hashed ) : server_list = list ( mapping . servers ) val = _BisectHashList ( server_list , 0 , ( len ( server_list ) - 1 ) , hashed ) . index return val
find the corresponding data server id given an hashed subject .