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https://issues.apache.org/jira/browse/BEAM-9574?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brian Hulette resolved BEAM-9574.
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Fix Version/s: 2.21.0
Resolution: Fixed
> NamedTuple instances generated from schemas cannot be pickled
> -------------------------------------------------------------
>
> Key: BEAM-9574
> URL: https://issues.apache.org/jira/browse/BEAM-9574
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Brian Hulette
> Assignee: Brian Hulette
> Priority: Major
> Fix For: 2.21.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Attempting to pickle an instance of a generated NamedTuple class results in
> the following:
> {code}
> _pickle.PicklingError: Can't pickle <class
> 'apache_beam.typehints.schemas.BeamSchema_a7de91e0_ae11_4c52_a041_0b58ada35ac1'>:
> attribute lookup BeamSchema_a7de91e0_ae11_4c52_a041_0b58ada35ac1 on
> apache_beam.typehints.schemas failed
> {code}
> In general, we shouldn't be pickling these instances, but occasionally it may
> be necessary, and we should just do it rather than failing hard.
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