[jira] [Created] (KAFKA-9145) AbstractCoordinator should respect retry backoff between rebalances

["Jason Gustafson (Jira)" <ji...@apache.org>]

Jason Gustafson created KAFKA-9145:
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             Summary: AbstractCoordinator should respect retry backoff between rebalances
                 Key: KAFKA-9145
                 URL: https://issues.apache.org/jira/browse/KAFKA-9145
             Project: Kafka
          Issue Type: Improvement
          Components: consumer, KafkaConnect
            Reporter: Jason Gustafson
             Fix For: 2.5.0


We hit a situation where the connect worker seems to have been requesting group rejoins repeatedly for some reason. In theory the same thing could happen to the consumer if a user repeatedly changes the subscribed topics in a tight loop. Currently AbstractCoordinator would not backoff in these cases because the rebalances may all be completing successfully. It probably makes sense to enforce a minimum time between locally triggered rebalances in order to avoid overloading the broker with repeated group rebalances.



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