[KAFKA-9535] Metadata not updated when consumer encounters FENCED_LEADER_EPOCH

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 2.5.0, 2.3.2, 2.4.1
• Assignee: Boyang Chen
• Reporter: Boyang Chen
• Created: 10/Feb/20 23:08
• Updated: 16/Feb/20 23:36
• Resolved: 16/Feb/20 23:36

Description

Inside the consumer Fetcher's handling of ListOffsetResponse, if we hit `FENCED_LEADER_EPOCH` on partition level, the client will blindly retry without refreshing the metadata, creating a stuck state as the local leader epoch never gets updated and constantly fails the broker check.

The solution is to trigger metadata update upon receiving retriable errors, before we kick off another offset list.

Issue Links

• links to: GitHub Pull Request #8088