Abhijeet Kumar created KAFKA-15261:
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Summary: 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
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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