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Posted to commits@beam.apache.org by "Kenneth Knowles (JIRA)" <ji...@apache.org> on 2017/04/20 04:13:04 UTC

[jira] [Assigned] (BEAM-311) Add 'garbage collection' hold when receive late element

     [ https://issues.apache.org/jira/browse/BEAM-311?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kenneth Knowles reassigned BEAM-311:
------------------------------------

    Assignee:     (was: Kenneth Knowles)

> Add 'garbage collection' hold when receive late element
> -------------------------------------------------------
>
>                 Key: BEAM-311
>                 URL: https://issues.apache.org/jira/browse/BEAM-311
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-core
>            Reporter: Mark Shields
>
> We currently add a 'garbage collection' hold in WatermarkHold (invoked via ReduceFnRunner) if the closing behavior is FIRE_ALWAYS. This means an element which has come in too late for a data holds and an end-of-window hold may end up setting no hold at all. As a result, the eventual pane containing that element may end up dropped as being too late.



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