[AVRO-4007] [Rust] Faster is_nullable for UnionSchema

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.12.0, 1.11.4
• Component/s: rust
• Labels: pull-request-available
• Assignee: Martin Tzvetanov Grigorov
• Reporter: Martin Tzvetanov Grigorov
• Created: 24/Jun/24 08:04
• Updated: 04/Jul/24 12:52
• Resolved: 24/Jun/24 08:05

Description

https://github.com/apache/avro/pull/2961

Writing large amounts of avro data in rust is slow because (in my case) ~40% of total run time is spent in the function UnionSchema::is_nullable. The issue is that the x == Schema::Null invokes schema canonicalization which is
apparently somewhat slow. I've modified the method to use match instead and see a considerable performance improvement.

Issue Links

• links to: GitHub Pull Request #2961