[ARROW-10791] [Rust] StreamReader, read_dictionary duplicating schema info

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.0.0
• Component/s: Rust
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/26731
• Assignee: Carol Nichols
• Reporter: Carol Nichols
• Created: 02/Dec/20 20:08
• Updated: 11/Jan/23 08:15
• Resolved: 03/Dec/20 05:48

Description

The `read_dictionary` function takes both an ipc schema and a `Schema`, but it can get the information it needs from just the `Schema`. Then the `StreamReader` doesn't need to keep the ipc schema bytes around, because it also has the `Schema`.

The Flight integration test code needs to read dictionaries as well, and it seemed overly complex to need both kinds of schemas. PR coming!

Issue Links

• links to: GitHub Pull Request #8820