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https://issues.apache.org/jira/browse/FLINK-40608?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dian Fu closed FLINK-40608.
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Fix Version/s: 2.4.0
Resolution: Fixed
Merged to master via b7a2e6d38bf1778d4d30836f505a8621175ded5f
> Extract dataframe UDF type inference into shared module
> -------------------------------------------------------
>
> Key: FLINK-40608
> URL: https://issues.apache.org/jira/browse/FLINK-40608
> Project: Flink
> Issue Type: Sub-task
> Reporter: Mika Naylor
> Assignee: Mika Naylor
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.4.0
>
>
> Should also establish not null by default, with `Optional[T]` functioning as
> the nullable marker.
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