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https://issues.apache.org/jira/browse/KAFKA-13102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justine Olshan reassigned KAFKA-13102:
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Assignee: Justine Olshan
> Topic IDs not propagated to metadata cache quickly enough for Fetch path
> ------------------------------------------------------------------------
>
> Key: KAFKA-13102
> URL: https://issues.apache.org/jira/browse/KAFKA-13102
> Project: Kafka
> Issue Type: Bug
> Reporter: Justine Olshan
> Assignee: Justine Olshan
> Priority: Major
>
> Currently, the fetch path for replicas relies on the topic IDs in the
> metadata cache. However, the propagation of topic ID information is done
> through the UpdateMetadata request and is too slow. This has resulted in
> increased partitions in error, frequent closing of sessions and made tests
> like ConsumerBounceTest#testCloseDuringRebalance extremely flaky.
> A quick test with topic IDs stored in the replica manager during the handling
> of LISR requests showed that significantly fewer errors and made
> ConsumerBounceTest#testCloseDuringRebalance much less flaky (passing 50/50
> runs vs. 11/50 runs).
> The task now is figuring out the best strategy to store topic IDs for the
> fetch path using the IDs from the LISR request.
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