[C++][Python] Register Multiple Kernels for a UDF
- Dominant language
- C++
- Stars
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Description
The current UDF integration (https://issues.apache.org/jira/browse/ARROW-15639) doesn't support multiple kernel registration. It only supports registering a single kernel under a given function name. Enabling multiple kernels to be registered under the same function name is a must for usability and consistency with the existing functions in the function registry.
**Reporter**: [Vibhatha Lakmal Abeykoon](https://issues.apache.org/jira/browse/ARROW-16212) / @vibhatha
**Assignee**: [Vibhatha Lakmal Abeykoon](https://issues.apache.org/jira/browse/ARROW-16212) / @vibhatha
#### PRs and other links:
- [GitHub Pull Request #14320](https://github.com/apache/arrow/pull/14320)
**Note**: *This issue was originally created as [ARROW-16212](https://issues.apache.org/jira/browse/ARROW-16212). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*
Contributor guide
Research direction
Start with the UDF integration described in ARROW-15639 and inspect pull request #14320, which is linked from the issue. Confirm how registration currently handles one kernel and ensure the function registry can accept multiple kernels under one function name in both C++ and Python.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, python
- Domain
- backend-api-design
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 20/100