[HIVE-5278] Move some string UDFs to GenericUDFs, for better varchar support

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Component/s: Types, UDF
• Assignee: Jason Dere
• Reporter: Jason Dere
• Created: 12/Sep/13 02:36
• Updated: 15/Oct/13 23:29
• Resolved: 15/Sep/13 23:22

Description

To better support varchar/char types in string UDFs, select UDFs should be converted to GenericUDFs. This allows the UDF to return the resulting char/varchar length in the type metadata.

This work is being split off as a separate task from HIVE-4844. The initial UDFs as part of this work are concat/lower/upper.

Issue Links

• is part of: HIVE-4844 Add varchar data type