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https://issues.apache.org/jira/browse/KAFKA-8708?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mickael Maison resolved KAFKA-8708.
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Resolution: Won't Fix
We are now removing ZooKeeper support so closing this issue.
> Zookeeper Session expired either before or while waiting for connection
> -----------------------------------------------------------------------
>
> Key: KAFKA-8708
> URL: https://issues.apache.org/jira/browse/KAFKA-8708
> Project: Kafka
> Issue Type: Bug
> Components: zkclient
> Affects Versions: 2.0.1
> Reporter: Chethan Bheemaiah
> Priority: Major
>
> Recently we had encountered an issue in one of our kafka cluster. One of the
> node went down and was not joining the kafka cluster on restart. We had
> observed Session expired error messages in server.log
> Below is one message
> ERROR kafka.common.ZkNodeChangeNotificationListener: Error while processing
> notification change for path = /config/changes
> kafka.zookeeper.ZooKeeperClientExpiredException: Session expired either
> before or while waiting for connection
> at
> kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply$mcV$sp(ZooKeeperClient.scala:238)
> at
> kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply(ZooKeeperClient.scala:226)
> at
> kafka.zookeeper.ZooKeeperClient$$anonfun$kafka$zookeeper$ZooKeeperClient$$waitUntilConnected$1.apply(ZooKeeperClient.scala:226)
> at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:251)
> at
> kafka.zookeeper.ZooKeeperClient.kafka$zookeeper$ZooKeeperClient$$waitUntilConnected(ZooKeeperClient.scala:226)
> at
> kafka.zookeeper.ZooKeeperClient$$anonfun$waitUntilConnected$1.apply$mcV$sp(ZooKeeperClient.scala:220)
> at
> kafka.zookeeper.ZooKeeperClient$$anonfun$waitUntilConnected$1.apply(ZooKeeperClient.scala:220)
> at
> kafka.zookeeper.ZooKeeperClient$$anonfun$waitUntilConnected$1.apply(ZooKeeperClient.scala:220)
> at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:251)
> at
> kafka.zookeeper.ZooKeeperClient.waitUntilConnected(ZooKeeperClient.scala:219)
> at
> kafka.zk.KafkaZkClient.retryRequestsUntilConnected(KafkaZkClient.scala:1510)
> at
> kafka.zk.KafkaZkClient.kafka$zk$KafkaZkClient$$retryRequestUntilConnected(KafkaZkClient.scala:1486)
> at kafka.zk.KafkaZkClient.getChildren(KafkaZkClient.scala:585)
> at
> kafka.common.ZkNodeChangeNotificationListener.kafka$common$ZkNodeChangeNotificationListener$$processNotifications(ZkNodeChangeNotificationListener.scala:82)
> at
> kafka.common.ZkNodeChangeNotificationListener$ChangeNotification.process(ZkNodeChangeNotificationListener.scala:119)
> at
> kafka.common.ZkNodeChangeNotificationListener$ChangeEventProcessThread.doWork(ZkNodeChangeNotificationListener.scala:145)
> at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:82)
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