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" <g...@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) ><semor...@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 >>
