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https://issues.apache.org/jira/browse/KAFKA-2849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ismael Juma updated KAFKA-2849:
-------------------------------
       Resolution: Not A Problem
    Fix Version/s:     (was: 0.9.0.0)
           Status: Resolved  (was: Patch Available)

It turns out that this is intentional. Part of the confusion is that the 
authenticator implementations are returning `KafkaPrincipal` so I thought we 
were losing the principal type in `RequestChannel.Session`. But, in fact, the 
authenticator implementations always return KafkaPrincipal instances with 
principal type of USER_TYPE. I think it would be clearer if we don't use 
`KafkaPrincipal` in `Authenticator` implementations. I will file a separate 
issue about that.

> Pass `KafkaChannel.principal` to `RequestChannel.Session`
> ---------------------------------------------------------
>
>                 Key: KAFKA-2849
>                 URL: https://issues.apache.org/jira/browse/KAFKA-2849
>             Project: Kafka
>          Issue Type: Bug
>          Components: security
>            Reporter: Ismael Juma
>            Assignee: Ismael Juma
>
> The current code does:
> {code}
> val session = RequestChannel.Session(new 
> KafkaPrincipal(KafkaPrincipal.USER_TYPE, channel.principal().getName), 
> channel.socketDescription)
> {code}
> It looks to me like we should just pass `channel.principal`.
> cc [~parth.brahmbhatt]



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