Davor Bonaci created BEAM-22:
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             Summary: DirectPipelineRunner: support for unbounded collections
                 Key: BEAM-22
                 URL: https://issues.apache.org/jira/browse/BEAM-22
             Project: Beam
          Issue Type: Improvement
            Reporter: Davor Bonaci
            Assignee: Davor Bonaci


DirectPipelineRunner currently runs over bounded PCollections only, and 
implements only a portion of the Beam Model.

We should improve it to faithfully implement the full Beam Model, such as add 
ability to run over unbounded PCollections, and better resemble execution model 
in a distributed system.

This further enables features such as a testing source which may simulate late 
data and test triggers in the pipeline.

Once this is done, we should update this StackOverflow question:
http://stackoverflow.com/questions/35350113/testing-triggers-with-processing-time/35401426#35401426



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