[ARROW-8796] [Rust] Allow parquet to be written directly to memory

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.0.0
• Component/s: Rust
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/24941
• Assignee: Unassigned
• Reporter: Markus Westerlind
• Created: 14/May/20 09:20
• Updated: 11/Jan/23 08:02
• Resolved: 09/Apr/21 18:13

Description

The `TryClone` bound currently needed in `ParquetWriter` makes it awkward to write parquet to memory, forcing either a `Rc` + `RefCell` wrapper or to write to a `File` first.

By explictly threading lifetimes around the underlying writer can be passed mutably through all parts of the writer, allowing `&mut Vec<u8>` or any other implementors of the basic io traits to be used directly.

Issue Links

• links to: GitHub Pull Request #7176