Guozhang Wang created KAFKA-1188:
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Summary: Stale LeaderAndIsr request could be handled by the broker
on Controller failover
Key: KAFKA-1188
URL: https://issues.apache.org/jira/browse/KAFKA-1188
Project: Kafka
Issue Type: Bug
Reporter: Guozhang Wang
... which will cause the broker to truncate log as responding in makeFollower,
and hence lose data.
One procedure to produce this issue:
3 brokers, 3 partitions, replication factor = 3.
1. Broker 1 is the original controller.
2. Broker 3 lost registration, 1 send LeaderAndIsr to 1 for isr shrinking
(leader of partition 1), but not to 2 since it is not the leader.
3. Broker 1 dies, new controller 2 sends all LeaderAndIsr to 2 and 3 (resumed),
and 2 handles the makeFollower, truncates data.
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