[HIVE-25555] ArrowColumnarBatchSerDe should store map natively instead of converting to list

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.2
• Fix Version/s: 4.0.0-alpha-1
• Component/s: llap, Reader, Serializers/Deserializers
• Target Version/s: 4.0.0
• Assignee: Sruthi Mooriyathvariam
• Reporter: Adesh Kumar Rao
• Created: 24/Sep/21 07:09
• Updated: 17/Nov/22 08:48
• Resolved: 25/Oct/21 14:17

Description

This should also take of creating non-nullable struct and non-nullable key type for the map data-type. Currently, list does not care about child type to be nullable/non-nullable.