[HIVE-25333] Refactor Existing UDF

• Type: Improvement
• Status: In Progress
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.1.2, 4.0.0
• Component/s: UDF
• Labels: Refactoring UDF
• Target Version/s: 4.0.0
• Assignee: Ashish Sharma
• Reporter: Ashish Sharma
• Created: 15/Jul/21 07:14
• Updated: 15/Jul/21 07:27

Description

Description

Most of the UDF code is write in 2013 no changes has done after since in UDF.

Objective of this EPIC -
1. Refactor all existing UDF implementation from UDF.class to GenericUDF.class
2. Clean the up the code to reduce code duplication

DOD
Refactor all UDF

Sub-Tasks

• Refactor GenericUDFDateDiff: Closed
• Refactor UDF CAST(<Date string> as TIMESTAMP): Closed
• Refactor UDF CAST(<Date string> as DATE): Closed
• Refactor UDFToBoolean to GenericUDFToBoolean: In Progress
• Refactor UDFToByte to GenericUDFToByte: In Progress
• Refactor UDFToInteger to GenericUDFToInteger: In Progress
• Fix from_unixtime() to consider leap seconds: Closed
• Refactor GenericUDFToUnixTimeStamp: Open