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https://issues.apache.org/jira/browse/KAFKA-10233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17306407#comment-17306407
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John Roesler commented on KAFKA-10233:
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This has been ongoing for quite a while. I'll go ahead and bump it to 3.0,
since at this point, a bug must be a regression or a severe issue to continue
blocking 2.8
> KafkaConsumer polls in a tight loop if group is not authorized
> --------------------------------------------------------------
>
> Key: KAFKA-10233
> URL: https://issues.apache.org/jira/browse/KAFKA-10233
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Reporter: Rajini Sivaram
> Assignee: Rajini Sivaram
> Priority: Major
> Fix For: 3.0.0
>
>
> Consumer propagates GroupAuthorizationException from poll immediately when
> trying to find coordinator even though it is a retriable exception. If the
> application polls in a loop, ignoring retriable exceptions, the consumer
> tries to find coordinator in a tight loop without any backoff. We should
> apply retry backoff in this case to avoid overloading brokers.
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