def _get_descending_key(gettime=time.time):
  now_descending = int((_FUTURE_TIME - gettime()) * 100)
  request_id_hash = os.environ.get("REQUEST_ID_HASH")
  if not request_id_hash:
    request_id_hash = str(random.getrandbits(32))
  return "%d%s" % (now_descending, request_id_hash)
Construct data file name from a metadata dictionary.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/mapreduce/model.py/_get_descending_key--crossover with--dataset/ETHPy150Open kdart/pycopia/QA/pycopia/datafile.py/get_filename