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https://issues.apache.org/jira/browse/BEAM-4746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17547288#comment-17547288
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Kenneth Knowles commented on BEAM-4746:
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This issue has been migrated to https://github.com/apache/beam/issues/19056
> Validate UDF/UDAF types on creation
> -----------------------------------
>
> Key: BEAM-4746
> URL: https://issues.apache.org/jira/browse/BEAM-4746
> Project: Beam
> Issue Type: New Feature
> Components: dsl-sql
> Reporter: Andrew Pilloud
> Priority: P3
>
> We should validate the primitive types used in UDFs and UDAFs at creation
> time. Similar to the verifyPrimitiveType() call in Row. This will ensure the
> functions don't fail with a cryptic error message.
> See:
> https://stackoverflow.com/questions/51239226/not-able-to-call-udf-in-beamsql
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