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Posted to commits@beam.apache.org by "Thomas Groh (JIRA)" <ji...@apache.org> on 2016/03/30 01:44:25 UTC

[jira] [Created] (BEAM-156) Implement Quiescence Signalling in the InProcessPipelineRunner

Thomas Groh created BEAM-156:
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             Summary: Implement Quiescence Signalling in the InProcessPipelineRunner
                 Key: BEAM-156
                 URL: https://issues.apache.org/jira/browse/BEAM-156
             Project: Beam
          Issue Type: Improvement
          Components: sdk-java-core
            Reporter: Thomas Groh
            Assignee: Davor Bonaci


A pipeline is quiescent when the following two properties hold:
  There are no triggers that can fire, given the current processing time and watermark
  All pending elements cannot make progress until a side input produces additional output

This is approximately equivalent to: If no more input is received, the pipeline will not perform any additional processing absent advances in processing time or event time

See also: https://docs.google.com/document/d/1fZUUbG2LxBtqCVabQshldXIhkMcXepsbv2vuuny8Ix4/edit#



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