[jira] [Commented] (KAFKA-7699) Improve wall-clock time punctuations

["Herman Kolstad Jakobsen (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-7699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17777120#comment-17777120 ] 

Herman Kolstad Jakobsen commented on KAFKA-7699:
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Working with real-time data from the power grid, this feature is really sought for! Our use case is that data should be delivered at given intervals and at a given time within that interval. For instance, data should be delivered every 10 seconds and at second 7 within that interval, e.g. 09:00:07, 09:00:17, etc.

> Improve wall-clock time punctuations
> ------------------------------------
>
>                 Key: KAFKA-7699
>                 URL: https://issues.apache.org/jira/browse/KAFKA-7699
>             Project: Kafka
>          Issue Type: New Feature
>          Components: streams
>            Reporter: Matthias J. Sax
>            Priority: Major
>              Labels: needs-kip
>
> Currently, wall-clock time punctuation allow to schedule periodic call backs based on wall-clock time progress. The punctuation time starts, when the punctuation is scheduled, thus, it's non-deterministic what is desired for many use cases (I want a call-back in 5 minutes from "now").
> It would be a nice improvement, to allow users to "anchor" wall-clock punctation, too, similar to a cron job: Thus, a punctuation would be triggered at "fixed" times like the beginning of the next hour, independent when the punctuation was registered.



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