[KAFKA-12875] Change Log layer segment map mutations to avoid absence of active segment

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.3.0
• Assignee: Yu Yang
• Reporter: Kowshik Prakasam
• Created: 01/Jun/21 21:27
• Updated: 31/Mar/22 17:59
• Resolved: 31/Mar/22 17:59

Description

https://github.com/apache/kafka/pull/10650 showed a case where active segment was absent when Log layer segments were iterated. We should investigate Log layer code to see if we can change Log layer segment map mutations to avoid absence of active segment at any given point. For example, if we are clearing all segments and creating a new one, maybe we can reverse the order to create a new segment first and then clear the old ones later.

Issue Links

• links to: GitHub Pull Request #11950