AppliedPTransform.from_runner_api fails on unexpected non-ParDo class with PAR_DO.urn
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Description
This is failing on a google-internal test.
Unexpected class is apache_beam.transforms.core.RunnerAPIPTransformHolder.
Failed assertion: https://github.com/apache/beam/blob/a59f897a64b0006ef3fcbe5a750d5f46499cfe61/sdks/python/apache_beam/pipeline.py#L1052-L1053
Imported from Jira [BEAM-9168](https://issues.apache.org/jira/browse/BEAM-9168). Original Jira may contain additional context.
Reported by: udim.
Contributor guide
Research direction
Start by reading sdks/python/apache_beam/pipeline.py around lines 1052-1053 and inspect how AppliedPTransform.from_runner_api handles PAR_DO.urn. Use the reported google-internal test or an equivalent reproduction involving RunnerAPIPTransformHolder, and consider the issue complete when that unexpected non-ParDo class no longer triggers the failed assertion.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- data-engineering
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100