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https://issues.apache.org/jira/browse/KAFKA-15261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Abhijeet Kumar resolved KAFKA-15261.
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Resolution: Fixed
> ReplicaFetcher thread should not block if RLMM is not initialized
> -----------------------------------------------------------------
>
> Key: KAFKA-15261
> URL: https://issues.apache.org/jira/browse/KAFKA-15261
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Abhijeet Kumar
> Assignee: Abhijeet Kumar
> Priority: Blocker
> Fix For: 3.6.0
>
>
> While building remote log aux state, the replica fetcher fetches the remote
> log segment metadata. If the TBRLMM is not initialized yet, the call blocks.
> Since replica fetchers share a common lock, it prevents other replica
> fetchers from running as well. Also the same lock is shared in the handle
> LeaderAndISR request path, hence those calls get blocked as well.
> Instead, replica fetcher should check if RLMM is initialized before
> attempting to fetch the remote log segment metadata. If RLMM is not
> initialized, it should throw a retryable error so that it can be retried
> later, and also does not block other operations.
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