liujp opened a new issue, #4988:
URL: https://github.com/apache/incubator-gluten/issues/4988
### Backend
VL (Velox)
### Bug description
In UDF register to gluten, using unordered_map{udf_name, udf_return_type} to
register the udf to gluten, as follows:
<img width="937" alt="image"
src="https://github.com/apache/incubator-gluten/assets/11934146/3852f557-d0b5-4ed0-9c64-bf1c39e1086c";>
so, in this method, udf registered to gluten can only using one return type.
but if I have a UDF that int myudf(int, int) and string myudf(string, int).if
so, I can't register one udf with one more return type
### Spark version
None
### Spark configurations
_No response_
### System information
_No response_
### Relevant logs
_No response_
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