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Posted to dev@kafka.apache.org by "Chia-Ping Tsai (Jira)" <ji...@apache.org> on 2021/07/04 13:45:00 UTC

[jira] [Resolved] (KAFKA-13030) FindCoordinators batching causes slow poll when requesting older broker

     [ https://issues.apache.org/jira/browse/KAFKA-13030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chia-Ping Tsai resolved KAFKA-13030.
------------------------------------
    Resolution: Duplicate

close as duplicate (https://github.com/apache/kafka/pull/10963#issuecomment-873593708)

> FindCoordinators batching causes slow poll when requesting older broker
> -----------------------------------------------------------------------
>
>                 Key: KAFKA-13030
>                 URL: https://issues.apache.org/jira/browse/KAFKA-13030
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: Chia-Ping Tsai
>            Assignee: Chia-Ping Tsai
>            Priority: Major
>
> https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/clients/consumer/internals/AbstractCoordinator.java#L888
> {quote}
>             if (e instanceof NoBatchedFindCoordinatorsException) {
>                 batchFindCoordinator = false;
>                 clearFindCoordinatorFuture();
>                 lookupCoordinator();
>                 return;
>             } 
> {quote}
> The current request future is NOT updated so it can't be completed until timeout. It causes a slow poll when users first poll data from older broker.



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