[KAFKA-13303] RoundRobinPartitioner broken by KIP-480

• Type: Bug
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.4.0, 2.5.0, 2.4.1, 2.5.1
• Component/s: producer
• Assignee: Unassigned
• Reporter: Jon McEwen
• Created: 15/Sep/21 10:07
• Updated: 20/Jul/23 08:33

Description

Since KIP-480 Sticky Partitioning, the RoundRobinPartitioner doesn't behave correctly.  An additional call to `partition()` on new batch leads to partitions being skipped.

 

I have a fix that I would like to contribute, but I need help getting started as a contributor, e.g. for basic things like formatting the code.

Issue Links

• is duplicated by: KAFKA-9965 Uneven distribution with RoundRobinPartitioner in AK 2.4+
• links to: GitHub Pull Request #11326