robertwb commented on a change in pull request #13549:
URL: https://github.com/apache/beam/pull/13549#discussion_r542921512
##########
File path:
sdks/python/apache_beam/runners/portability/fn_api_runner/translations.py
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@@ -1217,23 +1215,33 @@ def get_ancestors(name):
def _parent_for_fused_stages(stages, context):
- # type: (Iterable[Optional[str]], TransformContext) -> Optional[str]
+ # type: (Iterable[Stage], TransformContext) -> Optional[str]
'''Returns the name of the new parent for the fused stages.
The new parent is the lowest common ancestor of the fused stages that is not
contained in the set of stages to be fused. The provided context is used to
compute ancestors of stages.
'''
+
+ parents = context.parents_map()
+ # If any of the input stages were produced by fusion or an optimizer phase,
Review comment:
Ack. Thanks for the clarification.
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