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Posted to dev@kafka.apache.org by "Jason Gustafson (JIRA)" <ji...@apache.org> on 2015/09/25 01:46:04 UTC

[jira] [Created] (KAFKA-2579) Unauthorized clients should not be able to join groups

Jason Gustafson created KAFKA-2579:
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             Summary: Unauthorized clients should not be able to join groups 
                 Key: KAFKA-2579
                 URL: https://issues.apache.org/jira/browse/KAFKA-2579
             Project: Kafka
          Issue Type: Sub-task
    Affects Versions: 0.9.0.0
            Reporter: Jason Gustafson


The JoinGroup authorization is only checked in the response callback which is invoked after the request has been forwarded to the ConsumerCoordinator and the client has joined the group. This allows unauthorized members to impact the rest of the group since the coordinator will assign partitions to them. It would be better to check permission and return immediately if the client is unauthorized.



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