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Posted to issues@flink.apache.org by "Xintong Song (Jira)" <ji...@apache.org> on 2023/03/23 08:52:15 UTC

[jira] [Updated] (FLINK-28538) Eagerly emit a watermark the first time we exceed Long.MIN_VALUE

     [ https://issues.apache.org/jira/browse/FLINK-28538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xintong Song updated FLINK-28538:
---------------------------------
    Fix Version/s: 1.18.0
                       (was: 1.17.0)

> Eagerly emit a watermark the first time we exceed Long.MIN_VALUE
> ----------------------------------------------------------------
>
>                 Key: FLINK-28538
>                 URL: https://issues.apache.org/jira/browse/FLINK-28538
>             Project: Flink
>          Issue Type: Improvement
>          Components: API / DataStream
>            Reporter: Chesnay Schepler
>            Priority: Major
>             Fix For: 1.18.0
>
>
> The built-in watermark generators are set up to start with a Long.MIN_VALUE watermark, that is updated on each event and periodically emitted later on.
> As a result, before the first periodic emission is triggered (shortly after job (re)start) no element is ever considered late.
> We should be able to remedy that by emitting a watermark on the first event.



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