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https://issues.apache.org/jira/browse/BEAM-2100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17145478#comment-17145478
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Beam JIRA Bot commented on BEAM-2100:
-------------------------------------
This issue was marked "stale-P2" and has not received a public comment in 14
days. It is now automatically moved to P3. If you are still affected by it, you
can comment and move it back to P2.
> 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: P3
>
> 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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