[ZEPPELIN-5209] flink interpreter: Could not register temporary system function. A function named 'HashFunction' does already exist.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 0.9.0
• Fix Version/s: 0.9.1
• Component/s: flink
• Assignee: Unassigned
• Reporter: Peihui He
• Created: 19/Jan/21 10:30
• Updated: 19/Jul/21 09:16
• Resolved: 19/Jul/21 09:16

Description

To create an udf according to the official example，we will get the following error:

org.apache.flink.table.api.ValidationException: Could not register temporary system function. A function named 'HashFunction' does already exist.