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https://issues.apache.org/jira/browse/KAFKA-14941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17722596#comment-17722596
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Bikash Adhikari commented on KAFKA-14941:
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I am trying to dig deeper into this issue.
How can I figure out and separate which configuration options are applicable
only to nodes with the broker process role and which ones are applicable only
to the nodes with the controller process roles?
> Document which configuration options are applicable only to processes with
> broker role or controller role
> ---------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-14941
> URL: https://issues.apache.org/jira/browse/KAFKA-14941
> Project: Kafka
> Issue Type: Improvement
> Reporter: Jakub Scholz
> Priority: Major
>
> When running in KRaft mode, some of the configuration options are applicable
> only to nodes with the broker process role and some are applicable only to
> the nodes with the controller process roles. It would be great if this
> information was part of the documentation (e.g. in the [Broker
> Configs|https://kafka.apache.org/documentation/#brokerconfigs] table on the
> website), but if it was also part of the config classes so that it can be
> used in situations when the configuration is dynamically configured to for
> example filter the options applicable to different nodes. This would allow
> having configuration files with only the actually used configuration options
> and for example, help to reduce unnecessary restarts when rolling out new
> configurations etc.
> For some options, it seems clear and the Kafka node would refuse to start if
> they are set - for example the configurations of the non-controler-listeners
> in controller-only nodes. For others, it seems a bit less clear (Does
> {{compression.type}} option apply to controller-only nodes? Or the
> configurations for the offset topic? etc.).
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