[jira] [Created] (BEAM-2421) Migrate Dataflow to use impulse primitive as the only root primitive

["Luke Cwik (JIRA)" <ji...@apache.org>]

Luke Cwik created BEAM-2421:
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             Summary: Migrate Dataflow to use impulse primitive as the only root primitive
                 Key: BEAM-2421
                 URL: https://issues.apache.org/jira/browse/BEAM-2421
             Project: Beam
          Issue Type: Improvement
          Components: beam-model-fn-api, beam-model-runner-api, sdk-java-core, sdk-py
            Reporter: Luke Cwik


The impulse source emits a single byte array element within the global window.

This is in preparation for using SDF as the replacement for different bounded and unbounded source implementations.

Before:
Read(Source) -> ParDo -> ...
Impulse -> SDF(Source) -> ParDo -> ...



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