[CARBONDATA-4160] Alter carbon schema related to complex columns

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: spark-integration
• Assignee: Unassigned
• Reporter: Akshay
• Created: 02/Apr/21 08:49
• Updated: 22/Apr/21 07:37

Description

Add complex columns(only array and struct) to carbon table. For example - 

array<int>, struct<a:int, b:string>

Command - 

ALTER TABLE <table_name> ADD COLUMNS(arr array<double>)

Design document - https://docs.google.com/document/d/1DhhkVXM8rMvOuKDZeccJpFEfO3VkA9C0c7JHCV88NXI/edit

Sub-Tasks

• Support adding of single-level complex columns(array/struct): Resolved
• Support adding of multi-level complex columns(array/struct): Resolved
• Support adding of single-level and multi-level map columns: Resolved
• Support dropping of parent complex columns(for both single and multi-level array/struct/map): Resolved
• Support renaming of complex columns including nested levels(array/struct): Resolved
• Support renaming of map columns including nested levels: Resolved
• Alter change datatype at nested levels: Resolved
• Altering complex structure like add and drop at nested level: Open