[KAFKA-7440] Use leader epoch in consumer fetch requests

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3.0
• Component/s: consumer
• Labels: kip
• Assignee: David Arthur
• Reporter: Jason Gustafson
• Created: 25/Sep/18 16:32
• Updated: 11/Jul/19 15:43
• Resolved: 13/Feb/19 17:51

Description

This patch adds support in the consumer to use the leader epoch obtained from the metadata in fetch requests: https://cwiki.apache.org/confluence/display/KAFKA/KIP-320%3A+Allow+fetchers+to+detect+and+handle+log+truncation

Issue Links

• is related to: KAFKA-6880 Zombie replicas must be fenced
• is related to: KAFKA-7395 Add fencing to replication protocol (KIP-320)
• links to: GitHub Pull Request #6190
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