[SPARK-43847] Protobuf: Throw structured error when reading descriptor file in Python fails

• Type: Task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.5.0
• Component/s: Protobuf
• Epic Link: Protobuf Support
• Assignee: Unassigned
• Reporter: Raghu Angadi
• Created: 29/May/23 02:26
• Updated: 29/May/23 02:26

Description

`read_descriptor_set_file()` in `protobuf.functions` reads binary descriptor file from a file. It should throw structured Spark SQL error like _PROTOBUF_DESCRIPTOR_FILE_NOT_FOUND when the file is missing. It currently throws native Python error.