Chamikara Jayalath created BEAM-3923:
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             Summary: Define and add updates needed to run a simple Java 
transform using Python SDK on top of the reference runner (ULR)
                 Key: BEAM-3923
                 URL: https://issues.apache.org/jira/browse/BEAM-3923
             Project: Beam
          Issue Type: New Feature
          Components: sdk-java-core, sdk-java-harness
            Reporter: Chamikara Jayalath
            Assignee: Chamikara Jayalath


Task here is the do research and perform updates necessary to run a simple Java 
transform that does not require expansion through Beam portability offering. 
Initially we'll try to get this working for ULR and will try to expand into 
other runners later.

This will also including coming up with a reasonable mechanism to define a shim 
in SDK A for a transform that is fully defined in SDK B.

This should be combined with efforts to introduce mechanisms to expand cross 
platform transforms (see [1]) to achieve a full cross language transform 
offering which will, for example, allow IOs defined in SDK B to be used in SDK 
A.

[1] [https://s.apache.org/beam-mixed-language-pipelines]



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