[KAFKA-908] Write duplicate messages during broker failure

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Component/s: replication
• Assignee: Neha Narkhede
• Reporter: Tudor Scurtu
• Created: 16/May/13 15:43
• Updated: 31/Aug/17 18:34
• Resolved: 31/Aug/17 18:34

Description

Reproduction steps:
1. Start a multi-broker quorum (e.g. 3 brokers)
2. Create a multi-replica topic (e.g. 3 replicas)
3. Start an async performance producer with a fixed number of messages to produce
4. Force kill a partition leader broker using SIGKILL (no clean shutdown) - make sure you kill it during actual writes
5. Wait for the producer to stop
6. Read from the topic from the beginning - there will a small amount of duplicate messages

Reproduction rate: sometimes