[KAFKA-12788] Improve KRaft replica placement

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 3.0.0
• Labels: kip-500
• Assignee: Colin McCabe
• Reporter: Colin McCabe
• Reviewer: Jun Rao
• Created: 14/May/21 19:57
• Updated: 17/May/21 23:50
• Resolved: 17/May/21 23:50

Description

Implement the existing Kafka replica placement algorithm for KRaft.
This also means implementing rack awareness. Previously, we just chose
replicas randomly in a non-rack-aware fashion. Also, allow replicas to
be placed on fenced brokers if there are no other choices. This was
specified in KIP-631 but previously not implemented.

Issue Links

• links to: GitHub Pull Request #10494