[jira] [Created] (BEAM-9941) Add a test to prevent a regression in Dataflow when using a Flatten with different input/output coder followed by a GBK

[Luke Cwik (Jira)]

Luke Cwik created BEAM-9941:
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             Summary: Add a test to prevent a regression in Dataflow when using 
a Flatten with different input/output coder followed by a GBK
                 Key: BEAM-9941
                 URL: https://issues.apache.org/jira/browse/BEAM-9941
             Project: Beam
          Issue Type: Bug
          Components: runner-dataflow
            Reporter: Luke Cwik
            Assignee: Craig Chambers


Dataflow used to fail when having an input coder that differed from the output 
coder when followed by a GBK because of an optimization it is performing.



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