Re: [ANNOUNCE] New PMC chair: Mickael Maison

[Matthias J. Sax]

Congrats Mickael!

And thanks a lot for taking on this additional task! Glad to have you!


-Matthias

On 4/21/23 9:40 AM, Viktor Somogyi-Vass wrote:

Jun, thank you for all your hard work! Also, congrats Mickael, it is very
well deserved :)

Best,
Viktor

On Fri, Apr 21, 2023, 18:15 Adam Bellemare  wrote:


Thank you for all your hard work Jun - that's a decade-long legacy!
And congratulations to you Mickael!

On Fri, Apr 21, 2023 at 11:20 AM Josep Prat 
wrote:


Thanks Jun for your work as Chair all these years!
Congratulations Mickael!

Best,

———
Josep Prat

Aiven Deutschland GmbH

Alexanderufer 3-7, 10117 Berlin

Amtsgericht Charlottenburg, HRB 209739 B

Geschäftsführer: Oskari Saarenmaa & Hannu Valtonen

m: +491715557497

w: aiven.io

e: josep.p...@aiven.io

On Fri, Apr 21, 2023, 17:10 Jun Rao  wrote:


Hi, everyone,

After more than 10 years, I am stepping down as the PMC chair of Apache
Kafka. We now have a new chair Mickael Maison, who has been a PMC

member

since 2020. I plan to continue to contribute to Apache Kafka myself.

Congratulations, Mickael!

Jun

Addition to Kafka contributor group

[Atul Sharma]

Hi Team,

I would like to contribute to open source Kafka, can you please add me to
Kafka contributor group.

Username: atusharm
Email: atulsharma...@gmail.com

Thanks

Kafka Node Shutting Down Automatically

[Akshay Kumar]

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
+91-8556063696*
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