Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Plain View
Kafka, mail # dev - [jira] [Created] (KAFKA-849) Bug in controller's startup/failover logic fails to update in memory leader and isr cache causing other state changes to work incorrectly


Copy link to this message
-
[jira] [Created] (KAFKA-849) Bug in controller's startup/failover logic fails to update in memory leader and isr cache causing other state changes to work incorrectly
"Neha Narkhede 2013-04-04, 06:13
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