lukecwik commented on a change in pull request #12016:
URL: https://github.com/apache/beam/pull/12016#discussion_r447190738
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File path: sdks/python/apache_beam/transforms/core.py
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@@ -622,6 +638,16 @@ class DoFn(WithTypeHints, HasDisplayData,
urns.RunnerApiFn):
def from_callable(fn):
return CallableWrapperDoFn(fn)
+ @staticmethod
+ def unbounded_per_element():
Review comment:
This should also control whether the PCollection is unbounded or not
during expand.
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