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https://issues.apache.org/jira/browse/KAFKA-13207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajini Sivaram resolved KAFKA-13207.
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Resolution: Fixed
> Replica fetcher should not update partition state on diverging epoch if
> partition removed from fetcher
> ------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-13207
> URL: https://issues.apache.org/jira/browse/KAFKA-13207
> Project: Kafka
> Issue Type: New Feature
> Components: core
> Affects Versions: 2.8.0
> Reporter: Rajini Sivaram
> Assignee: Rajini Sivaram
> Priority: Critical
> Fix For: 3.0.0, 2.8.1
>
>
> {{AbstractFetcherThread#truncateOnFetchResponse}}{color:#24292e} is used with
> IBP 2.7 and above to truncate partitions based on diverging epoch returned in
> fetch responses. Truncation should only be performed for partitions that are
> still owned by the fetcher and this check should be done while holding
> {color}{{partitionMapLock}}{color:#24292e} to ensure that any partitions
> removed from the fetcher thread are not truncated{color}
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