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https://issues.apache.org/jira/browse/BOOKKEEPER-272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13294493#comment-13294493
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Ivan Kelly commented on BOOKKEEPER-272:
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I don't think we need the bookie. As we need to run a check on the ledger to 
find which parts are underreplicated (since some segments may not include the 
failed bookie), we may as well just record the ledger id. Also, it'd be better 
to only have one worker fixing a single ledger to avoid conflicting writes when 
updating the ledger metadata.
                
> Provide automatic mechanism to know bookie failures
> ---------------------------------------------------
>
>                 Key: BOOKKEEPER-272
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-272
>             Project: Bookkeeper
>          Issue Type: Sub-task
>          Components: bookkeeper-server
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>         Attachments: BOOKKEEPER-272.1.patch, BOOKKEEPER-272.2.patch, 
> BOOKKEEPER-272.Auditor.patch
>
>
> The idea is to build automatic mechanism to find out the bookie failures. 
> Setup the bookie failure notifications to start the re-replication process.
> There are multiple approaches to findout bookie failures. Please refer the 
> documents attached in BookKeeper-237.

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