[ARROW-2022] [Format] Add custom metadata field specific to a RecordBatch message

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.13.0
• Component/s: Format
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/18003
• Assignee: Micah Kornfield
• Reporter: Wes McKinney
• Created: 24/Jan/18 03:43
• Updated: 11/Jan/23 07:18
• Resolved: 12/Mar/19 14:29

Description

While we can have schema- and field-level custom metadata, we cannot send metadata at the record batch level. This could include things like statistics (although statistics isn't a great example, because this might be something we want to eventually standardize), but other things too

See message definitions in https://github.com/apache/arrow/blob/master/format/Message.fbs

Issue Links

• links to: GitHub Pull Request #3812