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https://issues.apache.org/jira/browse/KAFKA-8891?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Guozhang Wang resolved KAFKA-8891.
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Fix Version/s: 2.4.0
Resolution: Fixed
> invalid assignment protocol java.lang.IllegalStateException: Coordinator
> selected invalid assignment protocol: null
> -------------------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-8891
> URL: https://issues.apache.org/jira/browse/KAFKA-8891
> Project: Kafka
> Issue Type: Bug
> Reporter: SAIRAM KODURU
> Priority: Major
> Fix For: 2.4.0
>
>
> we are using 0.11.0.2 kafka client in our application.
> we have observed the *below mentioned error* and got flooded with logs in
> *crores*.
> java.lang.IllegalStateException: Coordinator selected invalid assignment
> protocol: null
> at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.onJoinComplete(ConsumerCoordinator.java:218)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.joinGroupIfNeeded(AbstractCoordinator.java:367)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureActiveGroup(AbstractCoordinator.java:316)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:297)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:1078)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1043)
>
> But we are not able to reproduce the issue ?
> we would like to know ,what are the possibilities of this error ?
> How to handle this exception?
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