[ARROW-14131] [Documentation] No description of Map in-memory layout

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Documentation
• External issue URL: https://github.com/apache/arrow/issues/29720
• Assignee: Unassigned
• Reporter: Jorge Leitão
• Created: 26/Sep/21 05:25
• Updated: 11/Jan/23 08:37

Description

The page https://arrow.apache.org/docs/format/Columnar.html#physical-memory-layout has no description of the Map type, even though it is part of the schema.fbs. This makes it difficult to implement and understand when it should be used.