pabloem commented on a change in pull request #10497: [BEAM-8335] Add the
ReverseTestStream
URL: https://github.com/apache/beam/pull/10497#discussion_r386714777
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File path: sdks/python/apache_beam/runners/direct/transform_evaluator.py
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@@ -471,7 +517,14 @@ def process_element(self, element):
# We can either have the _TestStream or the _WatermarkController to emit
# the elements. We chose to emit in the _WatermarkController so that the
# element is emitted at the correct watermark value.
- for event in self.test_stream.events(self.current_index):
+ events = []
+ if self.watermark == MIN_TIMESTAMP:
Review comment:
I wonder if we intend this to only be called once - and if it's possible for
it to be called more than once.
In our discussion, it seems that:
1) It is possible for this to be called more than once - right?
2) It may be okay for it to be called more htan once.
Let's confirm which of those are true
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