[HIVE-15167] remove SerDe interface; undeprecate Deserializer and Serializer

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3.0
• Assignee: Sergey Shelukhin
• Reporter: Sergey Shelukhin
• Created: 09/Nov/16 01:50
• Updated: 07/Feb/20 11:01
• Resolved: 15/Nov/16 01:22

Description

SerDe interfaces were deprecated in HIVE-4007 to suggest that users do not implement them. However, this results in deprecation warnings all over the codebase where they are actually used.
We should un-deprecate (reprecate? precate?) them. We can add a comment for implementers instead (we could add a method with a clearly bogus name like useThisAbstractClassInstead, and implement it in the class, so it would be noticeable, but that would break compat).

Issue Links

• causes: SPARK-30755 Update migration guide and add actionable exception for HIVE-15167
• relates to: HIVE-4007 Create abstract classes for serializer and deserializer
• links to: RB