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https://issues.apache.org/jira/browse/IMPALA-11718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17638350#comment-17638350
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Csaba Ringhofer commented on IMPALA-11718:
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https://gerrit.cloudera.org/#/c/19177/
> Improve support for Hive Generic UDFs
> -------------------------------------
>
> Key: IMPALA-11718
> URL: https://issues.apache.org/jira/browse/IMPALA-11718
> Project: IMPALA
> Issue Type: New Feature
> Components: Catalog, Frontend
> Reporter: Csaba Ringhofer
> Assignee: Csaba Ringhofer
> Priority: Major
>
> IMPALA-11162 has provided support for loading and running HIve generic UDFs,
> but it does not support handling them in an actually generic way, so the all
> overloads has to be added separately with argument and return types,
> similarly to non-persistent legacy Hive UDFs. This also means that the
> generic UDFs cannot be persisted to HMS, which doesn't expect argument/return
> type, only a .jar path and a function name.
> This ticket is created to add support for actual generic handling and
> persistence to HMS.
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