[KAFKA-14334] DelayedFetch purgatory not completed when appending as follower

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.4.0, 3.3.2
• Assignee: Jeff Kim
• Reporter: Jeff Kim
• Reviewer: David Jacot
• Created: 24/Oct/22 15:33
• Updated: 18/Nov/22 15:26
• Resolved: 16/Nov/22 14:04

Description

Currently, the ReplicaManager.delayedFetchPurgatory is only completed when appending as leader. With https://cwiki.apache.org/confluence/display/KAFKA/KIP-392%3A+Allow+consumers+to+fetch+from+closest+replica enabled, followers will also have to complete delayed fetch requests after successfully replicating. Otherwise, consumer fetches to closest followers will hit fetch.max.wait.ms

Issue Links

• links to: GitHub Pull Request #12783