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https://issues.apache.org/jira/browse/KAFKA-420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13440878#comment-13440878
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Neha Narkhede commented on KAFKA-420:
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Looks good. +1
> 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
> Assignee: Jun Rao
> Labels: bugs
> Attachments: kafka-420_v1.patch
>
> 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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