[ARROW-10506] [Rust] Make reserve methods of builders public

• Type: Wish
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Component/s: Rust
• External issue URL: https://github.com/apache/arrow/issues/26477
• Assignee: Unassigned
• Reporter: Ritchie
• Created: 06/Nov/20 06:32
• Updated: 11/Jan/23 08:13
• Resolved: 26/Apr/21 12:37

Description

There are situations where it isn't possible to know the required size beforehand. There is already a resize method on all builders, but it isn't public.