huaxingao opened a new pull request, #17966:
URL: https://github.com/apache/iceberg/pull/17966
Follow-up to #15180, which added listFunctions and loadFunction. This adds
the remaining function lifecycle operations that do not require a metadata
update model:
- createFunction (POST .../functions)
- dropFunction (DELETE .../functions/{function})
- functionExists (HEAD .../functions/{function})
createFunction takes a new CreateFunctionRequest carrying the function name
and its definitions. The server assigns function-uuid, format-version and
definition-log, so those are not part of the request. It returns the loaded
function so clients do not need a follow-up load to learn the assigned UUID
and metadata location.
Errors use IcebergErrorResponse to match the existing function endpoints, and
a FunctionAlreadyExistsError example is added for the 409 case.
updateFunction is left for a follow-up, since committing changes to a
function
requires a metadata update and requirement model that the UDF spec does not
define yet. Rename is also deferred: the function endpoints use
CatalogObjectIdentifier while RenameTableRequest uses TableIdentifier, and
which shape rename should use is worth settling separately.
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