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Posted to dev@kafka.apache.org by "Neha Narkhede (JIRA)" <ji...@apache.org> on 2012/08/24 04:09:42 UTC

[jira] [Commented] (KAFKA-420) maintain HW correctly with only 1 replica in ISR

    [ https://issues.apache.org/jira/browse/KAFKA-420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13440878#comment-13440878 ] 

Neha Narkhede commented on KAFKA-420:
-------------------------------------

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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