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https://issues.apache.org/jira/browse/KAFKA-18950?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax updated KAFKA-18950:
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Labels: needs-kip (was: )
> Allow to "shift" window-start anchor for Tumbling/Hopping windows
> -----------------------------------------------------------------
>
> Key: KAFKA-18950
> URL: https://issues.apache.org/jira/browse/KAFKA-18950
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Matthias J. Sax
> Assignee: Arti Kumari
> Priority: Major
> Labels: needs-kip
>
> Tumbling/Hopping windows are well defined window boundaries by alining the
> window start time to the UNIX epoch, ie, the very first window always start
> at ts=0.
> It could be a useful addition, to allow users to control the start-time
> "anchor" though, by adding an additional, optional "shift" parameter. This
> would for example allow users, to start a "daily window" at noon, instead of
> midnight.
> As long as we don't have "timezone" support, such a shift parameter should be
> a workaround for daily windows which are currently anchored in UTC timezone...
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