[SPARK-20349] ListFunctions returns duplicate functions after using persistent functions

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.2, 2.1.0
• Fix Version/s: 2.2.0
• Component/s: SQL
• Target Version/s: 2.2.0
• Assignee: Xiao Li
• Reporter: Xiao Li
• Created: 16/Apr/17 07:32
• Updated: 18/Apr/17 00:57
• Resolved: 17/Apr/17 16:51

Description

The session catalog caches some persistent functions in the FunctionRegistry, so there can be duplicates. Our Catalog API listFunctions does not handle it.

Issue Links

• links to: [Github] Pull Request #17646 (gatorsmile)
• links to: [Github] Pull Request #17661 (gatorsmile)