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Posted to dev@kafka.apache.org by "Sriharsha Chintalapani (JIRA)" <ji...@apache.org> on 2014/10/22 20:06:34 UTC
[jira] [Assigned] (KAFKA-1724) Errors after reboot in single node
setup
[ https://issues.apache.org/jira/browse/KAFKA-1724?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sriharsha Chintalapani reassigned KAFKA-1724:
---------------------------------------------
Assignee: Sriharsha Chintalapani
> Errors after reboot in single node setup
> ----------------------------------------
>
> Key: KAFKA-1724
> URL: https://issues.apache.org/jira/browse/KAFKA-1724
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8.2
> Reporter: Ciprian Hacman
> Assignee: Sriharsha Chintalapani
>
> In a single node setup, after reboot, Kafka logs show the following:
> {code}
> [2014-10-22 16:37:22,206] INFO [Controller 0]: Controller starting up (kafka.controller.KafkaController)
> [2014-10-22 16:37:22,419] INFO [Controller 0]: Controller startup complete (kafka.controller.KafkaController)
> [2014-10-22 16:37:22,554] INFO conflict in /brokers/ids/0 data: {"jmx_port":-1,"timestamp":"1413995842465","host":"ip-10-91-142-54.eu-west-1.compute.internal","version":1,"port":9092} stored data: {"jmx_port":-1,"timestamp":"1413994171579","host":"ip-10-91-142-54.eu-west-1.compute.internal","version":1,"port":9092} (kafka.utils.ZkUtils$)
> [2014-10-22 16:37:22,736] INFO I wrote this conflicted ephemeral node [{"jmx_port":-1,"timestamp":"1413995842465","host":"ip-10-91-142-54.eu-west-1.compute.internal","version":1,"port":9092}] at /brokers/ids/0 a while back in a different session, hence I will backoff for this node to be deleted by Zookeeper and retry (kafka.utils.ZkUtils$)
> [2014-10-22 16:37:25,010] ERROR Error handling event ZkEvent[Data of /controller changed sent to kafka.server.ZookeeperLeaderElector$LeaderChangeListener@a6af882] (org.I0Itec.zkclient.ZkEventThread)
> 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$$anonfun$2.apply$mcV$sp(KafkaController.scala:162)
> at kafka.server.ZookeeperLeaderElector$LeaderChangeListener$$anonfun$handleDataDeleted$1.apply$mcZ$sp(ZookeeperLeaderElector.scala:138)
> at kafka.server.ZookeeperLeaderElector$LeaderChangeListener$$anonfun$handleDataDeleted$1.apply(ZookeeperLeaderElector.scala:134)
> at kafka.server.ZookeeperLeaderElector$LeaderChangeListener$$anonfun$handleDataDeleted$1.apply(ZookeeperLeaderElector.scala:134)
> at kafka.utils.Utils$.inLock(Utils.scala:535)
> at kafka.server.ZookeeperLeaderElector$LeaderChangeListener.handleDataDeleted(ZookeeperLeaderElector.scala:134)
> at org.I0Itec.zkclient.ZkClient$6.run(ZkClient.java:549)
> at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:71)
> [2014-10-22 16:37:28,757] INFO Registered broker 0 at path /brokers/ids/0 with address ip-10-91-142-54.eu-west-1.compute.internal:9092. (kafka.utils.ZkUtils$)
> [2014-10-22 16:37:28,849] INFO [Kafka Server 0], started (kafka.server.KafkaServer)
> [2014-10-22 16:38:56,718] INFO Closing socket connection to /127.0.0.1. (kafka.network.Processor)
> [2014-10-22 16:38:56,850] INFO Closing socket connection to /127.0.0.1. (kafka.network.Processor)
> [2014-10-22 16:38:56,985] INFO Closing socket connection to /127.0.0.1. (kafka.network.Processor)
> {code}
> The last log line repeats forever and is correlated with errors on the app side.
> Restarting Kafka fixes the errors.
> Steps to reproduce (with help from the mailing list):
> # start zookeeper
> # start kafka-broker
> # create topic or start a producer writing to a topic
> # stop zookeeper
> # stop kafka-broker( kafka broker shutdown goes into WARN Session
> 0x14938d9dc010001 for server null, unexpected error, closing socket connection and attempting reconnect (org.apache.zookeeper.ClientCnxn) java.net.ConnectException: Connection refused)
> # kill -9 kafka-broker
> # restart zookeeper and than kafka-broker leads into the the error above
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