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https://issues.apache.org/jira/browse/KAFKA-18950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18122200#comment-18122200
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sanghyeok An commented on KAFKA-18950:
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[~codeunravel] Hi!
Sorry to pinging you out of the blue.
Are you currently working on this issue? If it's okay with you, I'd be happy to
take it from here and continue working on it.
> 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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