[FLINK-31707] Constant string cannot be used as input arguments of Pandas UDAF

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.16.2, 1.18.0, 1.17.1
• Component/s: API / Python
• Labels: pull-request-available
• Assignee: Dian Fu
• Reporter: Dian Fu
• Created: 03/Apr/23 11:39
• Updated: 04/Apr/23 05:26
• Resolved: 04/Apr/23 02:18

Description

It will throw exceptions as following when using constant strings in Pandas UDAF:

E                       raise ValueError("field_type %s is not supported." % field_type)
E                   ValueError: field_type type_name: CHAR
E                   char_info {
E                     length: 3
E                   }
E                    is not supported.

Issue Links

• links to: GitHub Pull Request #22332