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https://issues.apache.org/jira/browse/KAFKA-13103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17383338#comment-17383338
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Ismael Juma commented on KAFKA-13103:
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What would be the justification for `GROUP_AUTHORIZATION_FAILED`? 
`REBALANCE_IN_PROGRESS` seems really important though, would this be something 
we want to do for 3.0? Or is there a reason why it's ok for now?

> Should group admin handlers consider REBALANCE_IN_PROGRESS and 
> GROUP_AUTHORIZATION_FAILED as retryable errors?
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-13103
>                 URL: https://issues.apache.org/jira/browse/KAFKA-13103
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: David Jacot
>            Assignee: Luke Chen
>            Priority: Major
>
> [~rajinisiva...@gmail.com] and I were discussing if we should consider 
> REBALANCE_IN_PROGRESS and GROUP_AUTHORIZATION_FAILED as retryable errors in 
> the group handlers. I think that this could make sense, especially for 
> `REBALANCE_IN_PROGRESS`. `GROUP_AUTHORIZATION_FAILED` is more debatable as it 
> means that the handler would retry until the request timeout is reached. It 
> might be armful if the authorisation is really denied.



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