def _hashing_map(binary_record):
 proto = file_service_pb.KeyValue()
 proto.ParseFromString(binary_record)
 (yield (proto.key(), proto.value()))

def _hashing_map ( binary_record ) : proto = file_service_pb . KeyValue ( ) proto . ParseFromString ( binary_record ) ( yield ( proto . key ( ) , proto . value ( ) ) )
a map function used in hash phase .