[jira] [Created] (IMPALA-10671) Add a way to override Hive UDFs with native ones with the same name

["Csaba Ringhofer (Jira)" <ji...@apache.org>]

Csaba Ringhofer created IMPALA-10671:
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             Summary: Add a way to override Hive UDFs with native ones with the same name
                 Key: IMPALA-10671
                 URL: https://issues.apache.org/jira/browse/IMPALA-10671
             Project: IMPALA
          Issue Type: Improvement
          Components: Frontend
            Reporter: Csaba Ringhofer


This would be very useful in one specific use case:
if a view is used by both Hive and Impala then all the non-builtin functions it uses have to be Hive UDFs. It would be nice to add the possibility to write a native version too and if Impala would automatically prefer that.

A possible implementation is to choose a prefix like __impala_, and when loading UDFs these prefixis would be removed and __impala_funname() would be preferred over funname()



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