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From "Mark Shields (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BEAM-260) Know the getSideInputWindow upper bound so can gc side input state
Date Thu, 05 May 2016 23:40:12 GMT
Mark Shields created BEAM-260:
---------------------------------

             Summary: Know the getSideInputWindow upper bound so can gc side input state
                 Key: BEAM-260
                 URL: https://issues.apache.org/jira/browse/BEAM-260
             Project: Beam
          Issue Type: Bug
          Components: beam-model
            Reporter: Mark Shields
            Assignee: Frances Perry


We currently have no static knowledge about the getSideInputWindow function, and runners are
thus forced to hold on to all side input state / elements in case a future element reaches
back into an earlier side input element.

Maybe we need an upper bound on lag from current to result of getSideInputWindow so we can
have a progressing gc horizon as we do for  GKB window state. 



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