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From "Jason Gustafson (Jira)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-9145) AbstractCoordinator should respect retry backoff between rebalances
Date Tue, 05 Nov 2019 19:55:00 GMT
Jason Gustafson created KAFKA-9145:

             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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