robertwb commented on a change in pull request #13177:
URL: https://github.com/apache/beam/pull/13177#discussion_r514434037
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File path:
sdks/python/apache_beam/runners/portability/fn_api_runner/translations.py
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@@ -1702,13 +1702,26 @@ def sort_stages(stages, pipeline_context):
seen = set() # type: Set[Stage]
ordered = []
+ producers = {
+ pcoll: stage
+ for stage in all_stages for t in stage.transforms
Review comment:
This should be sufficient. Generally the subtransform structure is not
preserved when dealing with stages (and is simply reconstructed later).
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