ryanthompson591 commented on code in PR #17671:
URL: https://github.com/apache/beam/pull/17671#discussion_r877694279


##########
sdks/python/apache_beam/ml/inference/base.py:
##########
@@ -150,27 +155,24 @@ def update(
 
 class _RunInferenceDoFn(beam.DoFn):
   """A DoFn implementation generic to frameworks."""
-  def __init__(self, model_loader: ModelLoader, clock=None):
+  def __init__(self, model_loader: ModelLoader, clock):
     self._model_loader = model_loader
     self._inference_runner = model_loader.get_inference_runner()
     self._shared_model_handle = shared.Shared()
     self._metrics_collector = _MetricsCollector(
         self._inference_runner.get_metrics_namespace())
     self._clock = clock
-    if not clock:
-      self._clock = _ClockFactory.make_clock()
     self._model = None
 
   def _load_model(self):
     def load():
       """Function for constructing shared LoadedModel."""
       memory_before = _get_current_process_memory_in_bytes()
-      start_time = self._clock.get_current_time_in_microseconds()
+      start_time = _to_milliseconds(self._clock.time())
       model = self._model_loader.load_model()
-      end_time = self._clock.get_current_time_in_microseconds()
+      end_time = _to_milliseconds(self._clock.time())

Review Comment:
   This was new to version 3.7.  I think since we don't support 3.6 anymore we 
can do this now.  Done.



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