kafka-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sean Morris (semorris)" <semor...@cisco.com>
Subject Re: Kafka 0.9.0.1 failing on new leader election
Date Sat, 30 Jul 2016 11:24:24 GMT
Kafka 0.9.0.1
Zookeeper 3.4.6
Zkclient 0.7

I have verified I only have one zkclient.jar in my class path.

Thanks,
Sean




On 7/29/16, 9:35 PM, "Gwen Shapira" <gwen@confluent.io> wrote:

>you know, I ran into those null pointer exceptions when I accidentally
>tested Kafka with mismatching version of zkclient.
>
>Can you share the versions of both? And make sure you have only one
>zkclient on your classpath?
>
>On Tue, Jul 26, 2016 at 6:40 AM, Sean Morris (semorris)
><semorris@cisco.com> wrote:
>> I have a setup with 2 brokers and it is going through leader re-election but seems
to fail to complete. The behavior I start to see is that some published succeed but others
will fail with NotLeader exceptions like this
>>
>>
>> java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.NotLeaderForPartitionException:
This server is not the leader for that topic-partition.
>>
>>         at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.valueOrError(FutureRecordMetadata.java:56)
>>
>>         at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.get(FutureRecordMetadata.java:43)
>>
>>         at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.get(FutureRecordMetadata.java:25)
>>
>>
>> My Kafka and zookeeper log file has errors like this
>>
>>
>> [2016-07-26 02:01:12,842] ERROR [kafka.controller.ControllerBrokerRequestBatch] Haven't
been able to send metadata update requests, current state of the map is Map(2 -> Map(eox-1
-> (LeaderAndIsrInfo:(Leader:2,ISR:2,1,LeaderEpoch:46,ControllerEpoch:34),ReplicationFactor:2),AllReplicas:2,1),
notify-eportal-1 -> (LeaderAndIsrInfo:(Leader:2,ISR:2,1,LeaderEpoch:51,ControllerEpoch:34),ReplicationFactor:2),AllReplicas:2,1),
psirts-1 -> (LeaderAndIsrInfo:(Leader:2,ISR:2,1,LeaderEpoch:51,ControllerEpoch:34),ReplicationFactor:2),AllReplicas:2,1),
notify-pushNotif-low-1 -> (LeaderAndIsrInfo:(Leader:2,ISR:2,1,LeaderEpoch:51,ControllerEpoch:34),ReplicationFactor:2),AllReplicas:2,1)),
1 -> Map(eox-1 -> (LeaderAndIsrInfo:(Leader:2,ISR:2,1,LeaderEpoch:46,ControllerEpoch:34),ReplicationFactor:2),AllReplicas:2,1),
notify-eportal-1 -> (LeaderAndIsrInfo:(Leader:2,ISR:2,1,LeaderEpoch:51,ControllerEpoch:34),ReplicationFactor:2),AllReplicas:2,1),
psirts-1 -> (LeaderAndIsrInfo:(Leader:2,ISR:2,1,LeaderEpoch:51,ControllerEpoch:34),ReplicationFactor:2),AllReplicas:2,1),
notify-pushNotif-low-1 -> (LeaderAndIsrInfo:(Leader:2,ISR:2,1,LeaderEpoch:51,ControllerEpoch:34),ReplicationFactor:2),AllReplicas:2,1)))
>>
>> [2016-07-26 02:01:12,845] ERROR [kafka.controller.KafkaController] [Controller 1]:
Forcing the controller to resign
>>
>>
>> Which is then followed by a null pointer exception
>>
>>
>> [2016-07-26 02:01:13,021] ERROR [org.I0Itec.zkclient.ZkEventThread] Error handling
event ZkEvent[Children of /isr_change_notification changed sent to kafka.controller.IsrChangeNotificationListener@55ca3750]
>>
>> java.lang.IllegalStateException: java.lang.NullPointerException
>>
>>         at kafka.controller.ControllerBrokerRequestBatch.sendRequestsToBrokers(ControllerChannelManager.scala:434)
>>
>>         at kafka.controller.KafkaController.sendUpdateMetadataRequest(KafkaController.scala:1029)
>>
>>         at kafka.controller.IsrChangeNotificationListener.kafka$controller$IsrChangeNotificationListener$$processUpdateNotifications(KafkaController.scala:1372)
>>
>>         at kafka.controller.IsrChangeNotificationListener$$anonfun$handleChildChange$1.apply$mcV$sp(KafkaController.scala:1359)
>>
>>         at kafka.controller.IsrChangeNotificationListener$$anonfun$handleChildChange$1.apply(KafkaController.scala:1352)
>>
>>         at kafka.controller.IsrChangeNotificationListener$$anonfun$handleChildChange$1.apply(KafkaController.scala:1352)
>>
>>         at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:262)
>>
>>         at kafka.controller.IsrChangeNotificationListener.handleChildChange(KafkaController.scala:1352)
>>
>>         at org.I0Itec.zkclient.ZkClient$10.run(ZkClient.java:842)
>>
>>         at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:71)
>>
>> Caused by: java.lang.NullPointerException
>>
>>         at kafka.controller.KafkaController.sendRequest(KafkaController.scala:699)
>>
>>         at kafka.controller.ControllerBrokerRequestBatch$$anonfun$sendRequestsToBrokers$2.apply(ControllerChannelManager.scala:403)
>>
>>         at kafka.controller.ControllerBrokerRequestBatch$$anonfun$sendRequestsToBrokers$2.apply(ControllerChannelManager.scala:369)
>>
>>         at scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
>>
>>         at scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:99)
>>
>>         at scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:230)
>>
>>         at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:40)
>>
>>         at scala.collection.mutable.HashMap.foreach(HashMap.scala:99)
>>
>>         at kafka.controller.ControllerBrokerRequestBatch.sendRequestsToBrokers(ControllerChannelManager.scala:369)
>>
>>         ... 9 more
>>
>>
>> I eventually restarted zookeeper and my brokers. This has happened twice in the last
week. Any ideas?
>>
>>
>> Thanks,
>>
>> Sean
>>
Mime
View raw message