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https://issues.apache.org/jira/browse/BEAM-13624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17543027#comment-17543027
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Beam JIRA Bot commented on BEAM-13624:
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This issue is P2 but has been unassigned without any comment for 60 days so it
has been labeled "stale-P2". If this issue is still affecting you, we care!
Please comment and remove the label. Otherwise, in 14 days the issue will be
moved to P3.
Please see https://beam.apache.org/contribute/jira-priorities/ for a detailed
explanation of what these priorities mean.
> pipeline_fragment incorrectly prunes producer transform
> -------------------------------------------------------
>
> Key: BEAM-13624
> URL: https://issues.apache.org/jira/browse/BEAM-13624
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Brian Hulette
> Priority: P2
> Labels: stale-P2
>
> Unfortunately I haven't been able to diagnose the exact issue here or come up
> with a minimal repro. I just have some code to reproduce in
> https://github.com/apache/beam/pull/16445.
> That PR adds support for value_count(bins) in the DataFrame API, which for
> some reason is interacting poorly with pipeline pruning in interactive Beam
> (rehydrating the pipeline raises an error about a PCollection's producer
> missing). The PR also adds a test to transform_test.py that replicate the
> issue, as well as a temporary mitigation in pipeline_fragment.py. I think the
> mitigation is effectively disabling pipeline pruning, so it likely shouldn't
> be merged.
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