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From "Scott Wegner (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BEAM-249) Combine.GroupedValues re-wraps combineFn from Combine.PerKey and loses identity for DisplayData
Date Mon, 02 May 2016 18:26:13 GMT
Scott Wegner created BEAM-249:
---------------------------------

             Summary: Combine.GroupedValues re-wraps combineFn from Combine.PerKey and loses
identity for DisplayData
                 Key: BEAM-249
                 URL: https://issues.apache.org/jira/browse/BEAM-249
             Project: Beam
          Issue Type: Sub-task
          Components: sdk-java-core
            Reporter: Scott Wegner
            Assignee: Davor Bonaci
            Priority: Minor


Combine.PerKey is implemented in terms of Combine.GroupedValues, but it passed as wrapped
combineFn which gets re-wrapped in Combine.GroupedValues. As a result, we lose the identity
of the original combineFn for display data.

We should update the API to also pass the original identity downstream.



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