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https://issues.apache.org/jira/browse/KAFKA-8128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17755108#comment-17755108
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Viktor Somogyi-Vass commented on KAFKA-8128:
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I think for clients (since there is no REST API and such) we can either make
the client configs dynamic and/or detect a change in the jaas file and reload
it from the FS.
> Dynamic JAAS change for clients
> -------------------------------
>
> Key: KAFKA-8128
> URL: https://issues.apache.org/jira/browse/KAFKA-8128
> Project: Kafka
> Issue Type: Improvement
> Affects Versions: 2.2.0
> Reporter: Gabor Somogyi
> Assignee: Viktor Somogyi-Vass
> Priority: Major
>
> Clients using JAAS based authentication are now forced to restart themselves
> in order to reload the JAAS configuration. We could
> - make the {{sasl.jaas.config}} dynamically configurable and therefore better
> equip them to changing tokens etc.
> - detect file system level changes in configured JAAS and reload the context.
> Original issue:
> Re-authentication feature on broker side is under implementation which will
> enforce consumer/producer instances to re-authenticate time to time. It would
> be good to set the latest delegation token dynamically and not re-creating
> consumer/producer instances.
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