[jira] [Created] (BEAM-12872) Take GLB of types before and after type inference

[Heejong Lee (Jira)]

Heejong Lee created BEAM-12872:
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             Summary: Take GLB of types before and after type inference 
                 Key: BEAM-12872
                 URL: https://issues.apache.org/jira/browse/BEAM-12872
             Project: Beam
          Issue Type: Improvement
          Components: sdk-py-core
            Reporter: Heejong Lee


Take greatest lower bound of types before and after type inference so that we 
can choose most accurate type from the type hints of inner and outer transforms.



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