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https://issues.apache.org/jira/browse/KAFKA-6772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16432750#comment-16432750
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Ismael Juma commented on KAFKA-6772:
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cc [~rsivaram] [~ewencp] [~junrao]

> Broker should load credentials from ZK before requests are allowed
> ------------------------------------------------------------------
>
>                 Key: KAFKA-6772
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6772
>             Project: Kafka
>          Issue Type: Improvement
>    Affects Versions: 1.0.0, 1.1.0
>            Reporter: Ismael Juma
>            Priority: Major
>
> It is currently possible for clients to get an AuthenticationException during 
> start-up if the brokers have not yet loaded credentials from ZK. This 
> definitely affects SCRAM, but it may also affect delegation tokens.



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