[KAFKA-14766] Improve performance of VarInt encoding/decoding

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.6.0
• Component/s: core
• Assignee: Divij Vaidya
• Reporter: Divij Vaidya
• Reviewer: Ismael Juma
• Created: 27/Feb/23 17:27
• Updated: 05/May/23 12:09
• Resolved: 05/May/23 12:05

Description

Our current implementation in ByteUtils could be improved via loop unrolling and short circuiting scenarios such as 0. 

With the changes in attached PR, we see upto 83% improvement in throughput for  writingVarInt.

Issue Links

• links to: GitHub Pull Request #13312