[ARROW-10259] [Rust] Support field metadata

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0
• Component/s: Rust
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/26255
• Assignee: Qingyou Meng
• Reporter: Neville Dipale
• Created: 09/Oct/20 23:45
• Updated: 11/Jan/23 08:12
• Resolved: 07/Jan/21 09:02

Description

The biggest hurdle to adding field metadata is HashMap and HashSet not implementing Hash, Ord and PartialOrd.

I was thinking of implementing the metadata as a Vec<(String, String)> to overcome this limitation, and then serializing correctly to JSON.

Issue Links

• links to: GitHub Pull Request #9025