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https://issues.apache.org/jira/browse/KAFKA-9065?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Gustafson resolved KAFKA-9065.
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    Fix Version/s: 2.4.1
       Resolution: Fixed

> Loading offsets and group metadata loops forever
> ------------------------------------------------
>
>                 Key: KAFKA-9065
>                 URL: https://issues.apache.org/jira/browse/KAFKA-9065
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: David Jacot
>            Assignee: David Jacot
>            Priority: Major
>             Fix For: 2.4.1
>
>
> When the metadata manager loads the groups and the offsets of a partition of 
> the __consumer-offsets topic, `GroupMetadataManager.doLoadGroupsAndOffsets` 
> could loop forever if the start offset of the partition is smaller than the 
> end offset and no records are effectively read from the partition.
> While the conditions leading to this issue are not clear, I've got the case 
> where a partition was having two segments which were both empty in a cluster. 
> This could theoretically happen when all the tombstones in the first are 
> expired and the second is truncated or when the partition is accidentally 
> corrupted.
> As a side effect, the `doLoadGroupsAndOffsets` spins forever, blocks the 
> single thread of the scheduler, blocks the loading of all the groups and 
> offsets which are after in the queue, and blocks the expiration of the 
> offsets.



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