TheNeuralBit opened a new issue, #22714:
URL: https://github.com/apache/beam/issues/22714

   ### What happened?
   
   The NamedTuple types we generate in `apache_beam.typehints.schemas` confound 
pickle libraries. We work around this in many places (e.g. 
GeneratedClassRowTypeConstraint #22679). We should see if we can find a way to 
make these types picklable, and clean up the workarounds.
   
   Making the types work with cloudpickle should be the priority.
   
   ### Issue Priority
   
   Priority: 2
   
   ### Issue Component
   
   Component: sdk-py-core


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