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Posted to issues@flink.apache.org by "Jark Wu (Jira)" <ji...@apache.org> on 2021/03/22 03:02:00 UTC

[jira] [Assigned] (FLINK-21899) Introduce SOURCE_WATERMARK built-infunction to preserve watermark from source

     [ https://issues.apache.org/jira/browse/FLINK-21899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jark Wu reassigned FLINK-21899:
-------------------------------

    Assignee: Jark Wu

> Introduce SOURCE_WATERMARK built-infunction to preserve watermark from source
> -----------------------------------------------------------------------------
>
>                 Key: FLINK-21899
>                 URL: https://issues.apache.org/jira/browse/FLINK-21899
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / API
>            Reporter: Jark Wu
>            Assignee: Jark Wu
>            Priority: Major
>
> The SOURCE_WATERMARK function doesn't have concrete implementation. The {{eval()}} function should throw a meaningful exception message to indicate users the function should only be used in DDL to generate a watermark preserved from source system.



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