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https://issues.apache.org/jira/browse/KAFKA-14080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17855927#comment-17855927
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Nicolas Guyomar commented on KAFKA-14080:
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I'm only now noticing some bugs were created for that log, I submitted recently
a PR to lower those idle connection disconnect logs at DEBUG with a more
intuitive message [https://github.com/apache/kafka/pull/16089]
> too many node disconnected message in kafka-clients
> ---------------------------------------------------
>
> Key: KAFKA-14080
> URL: https://issues.apache.org/jira/browse/KAFKA-14080
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Affects Versions: 3.1.1
> Reporter: rui
> Priority: Major
>
> when upgrade kafka-clients from 3.0.1 to 3.1.1, there are a lot of "Node 0
> disconnected" message in networkclient per day per listener(20-30k)
> think it is introduced by
> [https://github.com/a0x8o/kafka/commit/cf22405663ec7854bde7eaa3f22b9818c276563f]
> questions:
> # is it normal with so many "Node X disconnected" message at INFO level? my
> kafka server has any issue?
> # it mentioned a back-off configuration to reduce the message, but does it
> work?(still so many messages)
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