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https://issues.apache.org/jira/browse/KAFKA-420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joel Koshy updated KAFKA-420:
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    Labels: bugs  (was: )
    
> maintain HW correctly with only 1 replica in ISR
> ------------------------------------------------
>
>                 Key: KAFKA-420
>                 URL: https://issues.apache.org/jira/browse/KAFKA-420
>             Project: Kafka
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 0.8
>            Reporter: Jun Rao
>              Labels: bugs
>   Original Estimate: 72h
>  Remaining Estimate: 72h
>
> Currently, the HW maintenance logic is only triggered when handling fetch 
> requests from the follower. As a result, if the ISR has only 1 replica, the 
> HW won't be incremented since there is no request from the follower to 
> trigger the maintenance logic.

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