rohdesamuel commented on a change in pull request #11503:
URL: https://github.com/apache/beam/pull/11503#discussion_r424735647
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File path: sdks/python/apache_beam/runners/direct/direct_runner.py
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@@ -234,7 +234,89 @@ def get_replacement_transform(self, transform):
from apache_beam.runners.direct.test_stream_impl import
_ExpandableTestStream
return _ExpandableTestStream(transform)
+ class GroupByKeyPTransformOverride(PTransformOverride):
+ """A ``PTransformOverride`` for ``GroupByKey``.
+
+ This replaces the Beam implementation as a primitive.
+ """
+ def matches(self, applied_ptransform):
+ # Imported here to avoid circular dependencies.
+ # pylint: disable=wrong-import-order, wrong-import-position
+ from apache_beam.transforms.core import GroupByKey
+ if (isinstance(applied_ptransform.transform, GroupByKey) and
+ not getattr(applied_ptransform.transform, 'override', False)):
+ self.input_type = applied_ptransform.inputs[0].element_type
+ return True
+ return False
+
+ def get_replacement_transform(self, ptransform):
+ # Imported here to avoid circular dependencies.
+ # pylint: disable=wrong-import-order, wrong-import-position
+ from apache_beam.transforms.core import GroupByKey
+
+ # Subclass from GroupByKey to inherit all the proper methods.
Review comment:
Yep, I took out the subclass dependency and simplified the override
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