Kenneth Knowles created BEAM-3207:
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             Summary: Publicly document primitive transforms and their URNs - 
give "impulse" a URN
                 Key: BEAM-3207
                 URL: https://issues.apache.org/jira/browse/BEAM-3207
             Project: Beam
          Issue Type: Improvement
          Components: beam-model
            Reporter: Kenneth Knowles
            Assignee: Kenneth Knowles


CC [~herohde]

The "impulse" transform was discussed and introduced in some contexts, since an 
SDK with only splittable DoFn needs some way to get things moving, but we don't 
really have a central place where these specs live, except perhaps the proto 
comments.

TBD how best to address the fairly amorphous way these things are introduced 
and propagated.

Incidentally we have inconsistent version strings in the draft URNs in the Java 
codebase, so there's plenty that would also improve in technical quality by 
having more eyes on it.



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