John Fung created KAFKA-457:
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Summary: Leader Re-election is broken in rev. 1368092
Key: KAFKA-457
URL: https://issues.apache.org/jira/browse/KAFKA-457
Project: Kafka
Issue Type: Bug
Reporter: John Fung
Assignee: Yang Ye
Priority: Blocker
Steps to reproduce:
1. Check out rev. 1368092 and execute the command: $ ./sbt update package
2. Replace <kafka_home>/system_test/single_host_multi_brokers/bin/run-test.sh
with the attached script because the logging message related to "shut down
completed" and "leader state transition" has been modified in this revision.
3. Execute the command bin/run-test.sh
4. The test seems to be hung.
5. The reason is that there is no leader re-election happening after the first
leader is terminated. By checking the logs, there may be only 1 "completed the
leader state transition" log message found in the server logs:
$ grep "completed the leader state transition" *
kafka_server_3.log:[2012-08-13 10:07:58,085] INFO Replica Manager on Broker 3,
completed the leader state transition for topic mytest partition 0
(kafka.server.ReplicaManager)
6. The correct behavior as in rev 1367821, re-election log messages are found
after leader termination as follows:
$ grep "completed the leader state transition" *
kafka_server_1.log:[2012-08-13 09:40:23,542] INFO Broker 1 completed the leader
state transition for topic mytest partition 0 (kafka.server.ReplicaManager)
kafka_server_1.log:[2012-08-13 09:42:17,881] INFO Broker 1 completed the leader
state transition for topic mytest partition 0 (kafka.server.ReplicaManager)
kafka_server_2.log:[2012-08-13 09:40:29,082] INFO Broker 2 completed the leader
state transition for topic mytest partition 0 (kafka.server.ReplicaManager)
kafka_server_3.log:[2012-08-13 09:44:06,695] INFO Broker 3 completed the leader
state transition for topic mytest part
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