Hi Akshay, Thanks for reporting the issue. It looks like a bug. Could you open a JIRA <https://issues.apache.org/jira/browse/KAFKA> ticket to track it?
Thank you. Luke On Fri, Apr 21, 2023 at 10:16 PM Akshay Kumar <akshayku...@ameyo.com.invalid> wrote: > Hello team, > > - We are using the zookeeper less Kafka (kafka Kraft). > - The cluster is having 3 nodes. > - One of the nodes gets automatically shut down randomly. > - Checked the logs but didn't get the exact reason. > - Sharing the logs below. Kafka version - 3.3.1 > > *Logs - * > > [2023-04-13 01:49:17,411] WARN [Controller 1] Renouncing the leadership > due to a metadata log event. We were the leader at epoch 37110, but in the > new epoch 37111, the leader is (none). Reverting to last committed offset > 28291464. (org.apache.kafka.controller.QuorumController) > [2023-04-13 01:49:17,531] INFO [RaftManager nodeId=1] Completed transition > to Unattached(epoch=37112, voters=[1, 2, 3], electionTimeoutMs=982) > (org.apache.kafka.raft.QuorumState) > > [2023-04-13 02:00:33,902] WARN [Controller 1] Renouncing the leadership > due to a metadata log event. We were the leader at epoch 37116, but in the > new epoch 37117, the leader is (none). Reverting to last committed offset > 28292807. (org.apache.kafka.controller.QuorumController) > [2023-04-13 02:00:33,936] INFO [RaftManager nodeId=1] Completed transition > to Unattached(epoch=37118, voters=[1, 2, 3], electionTimeoutMs=1497) > (org.apache.kafka.raft.QuorumState) > > [2023-04-13 02:00:35,014] ERROR [Controller 1] processBrokerHeartbeat: > unable to start processing because of NotControllerException. > (org.apache.kafka.controller.QuorumController) > > [2023-04-13 02:12:21,883] WARN [Controller 1] Renouncing the leadership > due to a metadata log event. We were the leader at epoch 37129, but in the > new epoch 37131, the leader is (none). Reverting to last committed offset > 28294206. (org.apache.kafka.controller.QuorumController) > > [2023-04-13 02:13:41,328] WARN [Controller 1] Renouncing the leadership > due to a metadata log event. We were the leader at epoch 37141, but in the > new epoch 37142, the leader is (none). Reverting to last committed offset > 28294325. (org.apache.kafka.controller.QuorumController) > > [2023-04-13 02:13:41,328] INFO [Controller 1] writeNoOpRecord: failed with > NotControllerException in 16561838 us > (org.apache.kafka.controller.QuorumController) > > [2023-04-13 02:13:41,328] INFO [Controller 1] maybeFenceReplicas: failed > with NotControllerException in 8520846 us > (org.apache.kafka.controller.QuorumController) > > [2023-04-13 02:13:41,328] INFO [BrokerToControllerChannelManager broker=1 > name=heartbeat] Client requested disconnect from node 1 > (org.apache.kafka.clients.NetworkClient) > [2023-04-13 02:13:41,329] INFO [BrokerLifecycleManager id=1] Unable to > send a heartbeat because the RPC got timed out before it could be sent. > (kafka.server.BrokerLifecycleManager) > [2023-04-13 02:13:41,351] ERROR Encountered fatal fault: exception while > renouncing leadership > (org.apache.kafka.server.fault.ProcessExitingFaultHandler) > java.lang.NullPointerException > at > org.apache.kafka.timeline.SnapshottableHashTable$HashTier.mergeFrom(SnapshottableHashTable.java:125) > at org.apache.kafka.timeline.Snapshot.mergeFrom(Snapshot.java:68) > at > org.apache.kafka.timeline.SnapshotRegistry.deleteSnapshot(SnapshotRegistry.java:236) > at > org.apache.kafka.timeline.SnapshotRegistry$SnapshotIterator.remove(SnapshotRegistry.java:67) > at > org.apache.kafka.timeline.SnapshotRegistry.revertToSnapshot(SnapshotRegistry.java:214) > at > org.apache.kafka.controller.QuorumController.renounce(QuorumController.java:1232) > at > org.apache.kafka.controller.QuorumController.access$3300(QuorumController.java:150) > at > org.apache.kafka.controller.QuorumController$QuorumMetaLogListener.lambda$handleLeaderChange$3(QuorumController.java:1076) > at > org.apache.kafka.controller.QuorumController$QuorumMetaLogListener.lambda$appendRaftEvent$4(QuorumController.java:1101) > at > org.apache.kafka.controller.QuorumController$ControlEvent.run(QuorumController.java:496) > at > org.apache.kafka.queue.KafkaEventQueue$EventContext.run(KafkaEventQueue.java:121) > at > org.apache.kafka.queue.KafkaEventQueue$EventHandler.handleEvents(KafkaEventQueue.java:200) > at > org.apache.kafka.queue.KafkaEventQueue$EventHandler.run(KafkaEventQueue.java:173) > at java.lang.Thread.run(Thread.java:750) > [2023-04-13 02:13:41,385] INFO [BrokerServer id=1] Transition from STARTED > to SHUTTING_DOWN (kafka.server.BrokerServer) > > > > Regards, > *[image: Inline image 1] * > *Akshay Kumar* > > *Senior Software Engineer ll | AMEYO > <http://www.ameyo.com/?utm_source=signature&utm_medium=email&utm_campaign=Email-Signature>+91-8556063696* > *[image: Facebook] <https://www.facebook.com/AmeyoCIM> [image: Twitter] > <https://twitter.com/AmeyoCIM> [image: Google Plus] > <https://plus.google.com/+AmeyoCIM/> [image: Linkedin] > <https://www.linkedin.com/company/ameyocim> * > *Latest from the Ameyo Blog* > <http://www.ameyo.com/blog/?utm_source=signature&utm_medium=email&utm_campaign=Email-Signature> > > > *[image: > https://exotel.com/virtual-telecom-operator-india/?utm_campaign=ulvno&utm_medium=email-signature&utm_source=corp-emails] > <https://exotel.com/virtual-telecom-operator-india/?utm_campaign=ulvno&utm_medium=email-signature&utm_source=corp-emails>* > > *Disclaimer:* The information in this communication is confidential and > may be legally privileged. 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