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https://issues.apache.org/jira/browse/KAFKA-14996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17724307#comment-17724307
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Edoardo Comar edited comment on KAFKA-14996 at 5/19/23 2:55 PM:
----------------------------------------------------------------

given that this means a client request can cause a cluster to become 
unavailable, I'd raise the Priority to critical

 

this is a potential denial of service attack?

cc

[~mimaison] [~ijuma] [~rajinisiva...@gmail.com] 


was (Author: ecomar):
given that this means a client request can cause a cluster to become 
unavailable, I'd raise the Priority to critical

 

this is a potential denial of service attack

cc

[~mimaison] [~ijuma] [~rajinisiva...@gmail.com] 

> CreateTopic falis with UnknownServerException if num partitions >= 
> QuorumController.MAX_RECORDS_PER_BATCH 
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-14996
>                 URL: https://issues.apache.org/jira/browse/KAFKA-14996
>             Project: Kafka
>          Issue Type: Bug
>          Components: controller
>            Reporter: Edoardo Comar
>            Assignee: Edoardo Comar
>            Priority: Critical
>
> If an attempt is made to create a topic with
> num partitions >= QuorumController.MAX_RECORDS_PER_BATCH  (10000)
> the client receives an UnknownServerException - it could rather receive a 
> better error.
> The controller logs
> {{2023-05-12 19:25:10,018] WARN [QuorumController id=1] createTopics: failed 
> with unknown server exception IllegalStateException at epoch 2 in 21956 us.  
> Renouncing leadership and reverting to the last committed offset 174. 
> (org.apache.kafka.controller.QuorumController)}}
> {{java.lang.IllegalStateException: Attempted to atomically commit 10001 
> records, but maxRecordsPerBatch is 10000}}
> {{    at 
> org.apache.kafka.controller.QuorumController.appendRecords(QuorumController.java:812)}}
> {{    at 
> org.apache.kafka.controller.QuorumController$ControllerWriteEvent.run(QuorumController.java:719)}}
> {{    at 
> org.apache.kafka.queue.KafkaEventQueue$EventContext.run(KafkaEventQueue.java:127)}}
> {{    at 
> org.apache.kafka.queue.KafkaEventQueue$EventHandler.handleEvents(KafkaEventQueue.java:210)}}
> {{    at 
> org.apache.kafka.queue.KafkaEventQueue$EventHandler.run(KafkaEventQueue.java:181)}}
> {{    at java.base/java.lang.Thread.run(Thread.java:829)}}
> {{[}}



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