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https://issues.apache.org/jira/browse/BEAM-2100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Beam JIRA Bot updated BEAM-2100:
--------------------------------
    Labels: stale-P2  (was: )

> 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
>            Priority: P2
>              Labels: stale-P2
>
> 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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