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https://issues.apache.org/jira/browse/RANGER-3231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17527879#comment-17527879
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Andras Katona commented on RANGER-3231:
---------------------------------------

Yes, that unsupported operation exception is intentional. We thought it'd be 
better to let know the tools what is not supported rather than giving empty 
response.

> Ranger should use kafka Authorizer from KIP-504
> -----------------------------------------------
>
>                 Key: RANGER-3231
>                 URL: https://issues.apache.org/jira/browse/RANGER-3231
>             Project: Ranger
>          Issue Type: Improvement
>          Components: plugins
>            Reporter: Ismael Juma
>            Assignee: Andras Katona
>            Priority: Major
>             Fix For: 3.0.0
>
>         Attachments: ranger_kafka.zip
>
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> As described in the KIP, `org.apache.kafka.server.authorizer.Authorizer` is 
> an improvement over `kafka.security.auth.Authorizer` and it's a pure Java 
> interface (instead of Scala).
> `kafka.security.auth.Authorizer` has been deprecated since December 2019 and 
> it will be removed in Apache Kafka 3.0 (roughly planned for July/August).
> See the KIP for more details:
> https://cwiki.apache.org/confluence/display/KAFKA/KIP-504+-+Add+new+Java+Authorizer+Interface



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