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https://issues.apache.org/jira/browse/KAFKA-12390?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrey updated KAFKA-12390:
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Attachment: negative lag kafka.png
> error when storing group assignment during SyncGroup
> -----------------------------------------------------
>
> Key: KAFKA-12390
> URL: https://issues.apache.org/jira/browse/KAFKA-12390
> Project: Kafka
> Issue Type: Bug
> Components: offset manager
> Affects Versions: 2.4.0
> Reporter: Andrey
> Priority: Major
> Attachments: negative lag kafka.png
>
>
> There is a cluster consisting of 3 nodes
> Apache Kafka Cluster 2.4.0
> messages were observed in the logs of one of the nodes:
> Preparing to rebalance group corecft-adapter2 in state PreparingRebalance
> with old generation 5043 (__consumer_offsets-22) (reason: error when storing
> group assignment during SyncGroup (member:
> consumer-5-5f3f994d-7c7c-43d6-8e0b-e011bdc2f9ba)) (kafka.
> coordinator.group.GroupCoordinator)
> Messages from the topic were read, but no commit occurred. then there was
> balancing and the data in the topics was "doubled". There was also a
> "negative" lag
> there are no error messages in the zookeeper logs
>
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