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https://issues.apache.org/jira/browse/KAFKA-1600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14133551#comment-14133551
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Neha Narkhede commented on KAFKA-1600:
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Marking this as a blocker for 0.8.2 since it is related to delete topic
> Controller failover not working correctly.
> ------------------------------------------
>
> Key: KAFKA-1600
> URL: https://issues.apache.org/jira/browse/KAFKA-1600
> Project: Kafka
> Issue Type: Bug
> Components: controller
> Affects Versions: 0.8.1
> Environment: Linux 3.2.0-4-amd64 #1 SMP Debian 3.2.46-1 x86_64
> GNU/Linux
> java version "1.7.0_03"
> Reporter: Ding Haifeng
> Priority: Blocker
> Fix For: 0.8.2
>
> Attachments: kafka_failure_logs.tar.gz
>
>
> We are running a 10 node Kafka 0.8.1 cluster and experienced a failure as
> following.
> At some time, broker A stopped acting as controller any more. We see this by
> kafka.controller - KafkaController - ActiveControllerCount in JMX metrics
> jumped from 1 to 0.
> In the meanwhile, broker A was still running and registering itself in the
> zookeeper /kafka/controller node. So no other brokers could be elected as new
> controller.
> Since that the cluster was running without controller. Producers and
> consumers still worked. But functions requiring a controller such as new
> topic leader election and topic leader failover were not working any more.
> A force restart of broker A could lead to a controller election and bring the
> cluster back to a correct state.
> Here is our brief observations. I can provide more necessary informations if
> needed.
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