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

["Chia-Ping Tsai (Jira)" <ji...@apache.org>]

Chia-Ping Tsai created KAFKA-13030:
--------------------------------------

             Summary: FindCoordinators batching make 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


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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