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Posted to commits@beam.apache.org by "Davor Bonaci (JIRA)" <ji...@apache.org> on 2017/05/04 17:03:04 UTC

[jira] [Assigned] (BEAM-2100) Improve error message for shifting elements back in time

     [ https://issues.apache.org/jira/browse/BEAM-2100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Davor Bonaci reassigned BEAM-2100:
----------------------------------

    Assignee: Thomas Groh

> Improve error message for shifting elements back in time
> --------------------------------------------------------
>
>                 Key: BEAM-2100
>                 URL: https://issues.apache.org/jira/browse/BEAM-2100
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-java-core
>            Reporter: Thomas Groh
>            Assignee: Thomas Groh
>             Fix For: First stable release
>
>
> When an element is shifted forwards in time (often to the end of the Global Window) as a result of a GroupByKey, they can't be reassigned the timestamps the user expects. This is fine, but users don't understand why the elements have been shifted forwards, and we should improve the messaging around this error.



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