Chethan Bheemaiah created KAFKA-8708:
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Summary: 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
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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