DESC FUNCTION fails for TVFs with required parameters

[heguanhui]

Version

doris master (trunk)

What's Wrong?

DESC FUNCTION on TVFs with required parameters (e.g., s3, hdfs, parquet_meta, partitions, jobs, tasks, hudi_meta) fails with parameter validation errors. For example:

DESC FUNCTION s3();
-- ERROR: Property uri is required

DESC FUNCTION parquet_meta();
-- ERROR: Property uri or file_path is required for parquet_meta

DESC FUNCTION numbers();
-- ERROR: number not set

DESC FUNCTION only needs to display column metadata and should not trigger full TVF construction, which includes parameter validation, privilege checks, and I/O operations (S3 file listing, BE RPC, HTTP HEAD requests, etc.).

What You Expected?

DESC FUNCTION should work for all TVFs regardless of whether required parameters are provided. It should only return column metadata without triggering full construction.

How to Reproduce?

DESC FUNCTION s3();
DESC FUNCTION hdfs();
DESC FUNCTION parquet_meta();
DESC FUNCTION numbers();

All of the above fail with parameter validation errors.

Are you willing to submit PR?

Yes