[jira] [Commented] (KAFKA-3761) Controller has RunningAsBroker instead of RunningAsController state

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-3761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15353508#comment-15353508 ] 

ASF GitHub Bot commented on KAFKA-3761:
---------------------------------------

Github user theduderog closed the pull request at:

    https://github.com/apache/kafka/pull/1437


> Controller has RunningAsBroker instead of RunningAsController state
> -------------------------------------------------------------------
>
>                 Key: KAFKA-3761
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3761
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Ismael Juma
>            Assignee: Roger Hoover
>
> In `KafkaServer.start`, we start `KafkaController`:
> {code}
> /* start kafka controller */
> kafkaController = new KafkaController(config, zkUtils, brokerState, kafkaMetricsTime, metrics, threadNamePrefix)
> kafkaController.startup()
> {code}
> Which sets the state to `RunningAsController` in `KafkaController.onControllerFailover`:
> `brokerState.newState(RunningAsController)`
> And this later gets set to `RunningAsBroker`.
> This doesn't match the diagram in `BrokerStates`. [~junrao] suggested that we should start the controller after we register the broker in ZK, but this seems tricky as we need to controller in `KafkaApis`.



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