Neha Narkhede created KAFKA-849:
-----------------------------------
Summary: Bug in controller's startup/failover logic fails to
update in memory leader and isr cache causing other state changes to work
incorrectly
Key: KAFKA-849
URL: https://issues.apache.org/jira/browse/KAFKA-849
Project: Kafka
Issue Type: Bug
Components: controller
Affects Versions: 0.8
Reporter: Neha Narkhede
Assignee: Neha Narkhede
Priority: Blocker
partitionLeadershipInfo is the in memory cache of the controller that keeps
track of every partition's "last elected" leader and isr. On controller
startup/failover, this cache is bootstrapped only with those partitions whose
leader is alive. This causes the leader and isr cache to be initialized
incorrectly causing other state transitions related to new broker startup,
existing broker failure to not work correctly. For instance, it does not allow
the controller to send the list of *all* replicas that exist on a broker to it
during startup.
Another bug during controller startup is that it invokes OnlinePartition state
change before OnlineReplica state change. This also breaks the guarantee that
the controller sends a full list of replicas to a broker on startup
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
