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https://issues.apache.org/jira/browse/KAFKA-8188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mickael Maison resolved KAFKA-8188.
-----------------------------------
Resolution: Won't Fix
We are now removing ZooKeeper support so closing this issue.
> Zookeeper Connection Issue Take Down the Whole Kafka Cluster
> ------------------------------------------------------------
>
> Key: KAFKA-8188
> URL: https://issues.apache.org/jira/browse/KAFKA-8188
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 2.1.1
> Reporter: Candice Wan
> Priority: Critical
> Attachments: thread_dump.log
>
>
> We recently upgraded to 2.1.1 and saw below zookeeper connection issues which
> took down the whole cluster. We've got 3 nodes in the cluster, 2 of which
> threw below exceptions at the same second.
> 2019-04-03 08:25:19.603 [main-SendThread(host2:36100)] WARN
> org.apache.zookeeper.ClientCnxn - Unable to reconnect to ZooKeeper service,
> session 0x10071ff9baf0001 has expired
> 2019-04-03 08:25:19.603 [main-SendThread(host2:36100)] INFO
> org.apache.zookeeper.ClientCnxn - Unable to reconnect to ZooKeeper service,
> session 0x10071ff9baf0001 has expired, closing socket connection
> 2019-04-03 08:25:19.605 [main-EventThread] INFO
> org.apache.zookeeper.ClientCnxn - EventThread shut down for session:
> 0x10071ff9baf0001
> 2019-04-03 08:25:19.605 [zk-session-expiry-handler0] INFO
> kafka.zookeeper.ZooKeeperClient - [ZooKeeperClient] Session expired.
> 2019-04-03 08:25:19.609 [zk-session-expiry-handler0] INFO
> kafka.zookeeper.ZooKeeperClient - [ZooKeeperClient] Initializing a new
> session to host1:36100,host2:36100,host3:36100.
> 2019-04-03 08:25:19.610 [zk-session-expiry-handler0] INFO
> org.apache.zookeeper.ZooKeeper - Initiating client connection,
> connectString=host1:36100,host2:36100,host3:36100 sessionTimeout=6000
> watcher=kafka.zookeeper.ZooKeeperClient$ZooKeeperClientWatcher$@12f8b1d8
> 2019-04-03 08:25:19.610 [zk-session-expiry-handler0] INFO
> o.apache.zookeeper.ClientCnxnSocket - jute.maxbuffer value is 4194304 Bytes
> 2019-04-03 08:25:19.611 [zk-session-expiry-handler0-SendThread(host1:36100)]
> WARN org.apache.zookeeper.ClientCnxn - SASL configuration failed:
> javax.security.auth.login.LoginException: No JAAS configuration section named
> 'Client' was found in specified JAAS configuration file:
> 'file:/app0/common/config/ldap-auth.config'. Will continue connection to
> Zookeeper server without SASL authentication, if Zookeeper server allows it.
> 2019-04-03 08:25:19.611 [zk-session-expiry-handler0-SendThread(host1:36100)]
> INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server
> host1/169.30.47.206:36100
> 2019-04-03 08:25:19.611 [zk-session-expiry-handler0-EventThread] ERROR
> kafka.zookeeper.ZooKeeperClient - [ZooKeeperClient] Auth failed.
> 2019-04-03 08:25:19.611 [zk-session-expiry-handler0-SendThread(host1:36100)]
> INFO org.apache.zookeeper.ClientCnxn - Socket connection established,
> initiating session, client: /169.20.222.18:56876, server:
> host1/169.30.47.206:36100
> 2019-04-03 08:25:19.612 [controller-event-thread] INFO
> k.controller.PartitionStateMachine - [PartitionStateMachine controllerId=3]
> Stopped partition state machine
> 2019-04-03 08:25:19.613 [controller-event-thread] INFO
> kafka.controller.ReplicaStateMachine - [ReplicaStateMachine controllerId=3]
> Stopped replica state machine
> 2019-04-03 08:25:19.614 [controller-event-thread] INFO
> kafka.controller.KafkaController - [Controller id=3] Resigned
> 2019-04-03 08:25:19.615 [controller-event-thread] INFO
> kafka.zk.KafkaZkClient - Creating /brokers/ids/3 (is it secure? false)
> 2019-04-03 08:25:19.628 [zk-session-expiry-handler0-SendThread(host1:36100)]
> INFO org.apache.zookeeper.ClientCnxn - Session establishment complete on
> server host1/169.30.47.206:36100, sessionid = 0x1007f4d2b810000, negotiated
> timeout = 6000
> 2019-04-03 08:25:19.631 [/config/changes-event-process-thread] INFO
> k.c.ZkNodeChangeNotificationListener - Processing notification(s) to
> /config/changes
> 2019-04-03 08:25:19.637 [controller-event-thread] ERROR
> k.zk.KafkaZkClient$CheckedEphemeral - Error while creating ephemeral at
> /brokers/ids/3, node already exists and owner '72182936680464385' does not
> match current session '72197563457011712'
> 2019-04-03 08:25:19.637 [controller-event-thread] INFO
> kafka.zk.KafkaZkClient - Result of znode creation at /brokers/ids/3 is:
> NODEEXISTS
> 2019-04-03 08:25:19.644 [controller-event-thread] ERROR
> k.c.ControllerEventManager$ControllerEventThread - [ControllerEventThread
> controllerId=3] Error processing event RegisterBrokerAndReelect
> org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode =
> NodeExists
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:126)
> at kafka.zk.KafkaZkClient.checkedEphemeralCreate(KafkaZkClient.scala:1631)
> at kafka.zk.KafkaZkClient.registerBroker(KafkaZkClient.scala:87)
> at
> kafka.controller.KafkaController$RegisterBrokerAndReelect$.process(KafkaController.scala:1516)
> at
> kafka.controller.ControllerEventManager$ControllerEventThread.$anonfun$doWork$1(ControllerEventManager.scala:89)
> at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)
> at kafka.metrics.KafkaTimer.time(KafkaTimer.scala:31)
> at
> kafka.controller.ControllerEventManager$ControllerEventThread.doWork(ControllerEventManager.scala:89)
> at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:82)
>
> Thread dump attached
>
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