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https://issues.apache.org/jira/browse/FLINK-21989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated FLINK-21989:
-----------------------------------
Labels: pull-request-available (was: )
> Add a SupportsSourceWatermark ability interface
> -----------------------------------------------
>
> Key: FLINK-21989
> URL: https://issues.apache.org/jira/browse/FLINK-21989
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / API, Table SQL / Planner
> Reporter: Timo Walther
> Assignee: Timo Walther
> Priority: Major
> Labels: pull-request-available
>
> FLINK-21899 added a dedicated function that can be used in watermark
> definitions. Currently, the generated watermark strategy is invalid because
> of the exception that we throw in the function’s implementation. We should
> integrate this concept deeper into the interfaces instead of the need to
> implement some expression analyzing utility for every source.
> We propose the following interface:
> {code}
> SupportsSourceWatermark {
> void applySourceWatermark()
> }
> {code}
>
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