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https://issues.apache.org/jira/browse/KAFKA-21149?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ken Huang resolved KAFKA-21149.
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Resolution: Fixed
> Speed up JoinGracePeriodDurabilityIntegrationTest
> -------------------------------------------------
>
> Key: KAFKA-21149
> URL: https://issues.apache.org/jira/browse/KAFKA-21149
> Project: Kafka
> Issue Type: Improvement
> Reporter: Chia-Ping Tsai
> Assignee: Jheng-Sing Chen
> Priority: Minor
>
> It can leverage the LEAVE_GROUP to speed up the bounce in
> {{{}shouldRecoverBufferAfterShutdown{}}}, since the restart with the same
> application id waits for the previous member's session timeout otherwise.
> {code:java}
> // restart the driver
>
> driver.close(CloseOptions.groupMembershipOperation(CloseOptions.GroupMembershipOperation.LEAVE_GROUP));
> assertEquals(KafkaStreams.State.NOT_RUNNING, driver.state());
> {code}
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