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https://issues.apache.org/jira/browse/KAFKA-6589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sandor Murakozi reassigned KAFKA-6589:
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Assignee: Sandor Murakozi
> Extract Heartbeat thread from Abstract Coordinator for testability purposes
> ---------------------------------------------------------------------------
>
> Key: KAFKA-6589
> URL: https://issues.apache.org/jira/browse/KAFKA-6589
> Project: Kafka
> Issue Type: Improvement
> Components: consumer
> Reporter: Guozhang Wang
> Assignee: Sandor Murakozi
> Priority: Minor
>
> Today we do not have an easy way to instrument the heartbeat thread in our
> unit test, e.g. to inject a GC or make it crash etc since it is a private
> class inside AbstractCoordinator.
> It is better to extract this class out and also enabling AbstractCoordinator
> to take a heartbeat-thread interface that can be mocked for test utils.
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