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

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Frontend
• Epic Color: ghx-label-1
• Assignee: Unassigned
• Reporter: Csaba Ringhofer
• Created: 23/Apr/21 09:54
• Updated: 23/Apr/21 09:54

Description

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()