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https://issues.apache.org/jira/browse/KAFKA-3107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Onur Karaman resolved KAFKA-3107.
---------------------------------
Resolution: Fixed
This problem should no longer exist after KAFKA-5028.
> Error when trying to shut down auto balancing scheduler of controller
> ---------------------------------------------------------------------
>
> Key: KAFKA-3107
> URL: https://issues.apache.org/jira/browse/KAFKA-3107
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8.2.1
> Reporter: Flavio Junqueira
>
> We observed the following exception when a controller was shutting down:
> {noformat}
> [run] Error handling event ZkEvent[New session event sent to
> kafka.controller.KafkaController$SessionExpirationListener@3278c211]
> java.lang.IllegalStateException: Kafka scheduler has not been started
> at kafka.utils.KafkaScheduler.ensureStarted(KafkaScheduler.scala:114)
> at kafka.utils.KafkaScheduler.shutdown(KafkaScheduler.scala:86)
> at
> kafka.controller.KafkaController.onControllerResignation(KafkaController.scala:350)
> at
> kafka.controller.KafkaController$SessionExpirationListener$$anonfun$handleNewSession$1.apply$mcZ$sp(KafkaController.scala:1108)
> at
> kafka.controller.KafkaController$SessionExpirationListener$$anonfun$handleNewSession$1.apply(KafkaController.scala:1107)
> at
> kafka.controller.KafkaController$SessionExpirationListener$$anonfun$handleNewSession$1.apply(KafkaController.scala:1107)
> at kafka.utils.Utils$.inLock(Utils.scala:535)
> at
> kafka.controller.KafkaController$SessionExpirationListener.handleNewSession(KafkaController.scala:1107)
> at org.I0Itec.zkclient.ZkClient$4.run(ZkClient.java:472)
> at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:71)
> {noformat}
> The scheduler should have been started.
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