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https://issues.apache.org/jira/browse/FLINK-11970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17323329#comment-17323329
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Flink Jira Bot commented on FLINK-11970:
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This issue is assigned but has not received an update in 7 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> TableEnvironment#registerFunction should overwrite if the same name function
> existed.
> --------------------------------------------------------------------------------------
>
> Key: FLINK-11970
> URL: https://issues.apache.org/jira/browse/FLINK-11970
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / API
> Reporter: Jeff Zhang
> Assignee: vinoyang
> Priority: Major
> Labels: stale-assigned
>
> Currently, it would throw exception if I try to register user function
> multiple times. Registering udf multiple times is very common usage in
> notebook scenario. And I don't think it would cause issues for users.
> e.g. If user happened to register the same udf multiple times (he intend to
> register 2 different udf actually), then he would get exception at runtime
> where he use the udf that is missing registration.
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