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https://issues.apache.org/jira/browse/BOOKKEEPER-199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13437855#comment-13437855
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Sijie Guo commented on BOOKKEEPER-199:
--------------------------------------

@Vinay,

I don't see any benefit running a separated thread than checking only exception 
happens. If I missed your idea, please correct me. 
                
> Provide bookie readonly mode, when journal/ledgers flushing has failed with 
> IOE
> -------------------------------------------------------------------------------
>
>                 Key: BOOKKEEPER-199
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-199
>             Project: Bookkeeper
>          Issue Type: Bug
>          Components: bookkeeper-server
>    Affects Versions: 4.0.0
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>            Priority: Critical
>             Fix For: 4.2.0
>
>         Attachments: BOOKKEEPER-199.patch
>
>
> Bookkeeper should change to readonly(r-o) mode when the journal/ledgers 
> flushing has failed with IOException. Later on, reject write requests on 
> server side and will accept only the read requests from the clients, because 
> even if flushing fails, the data in the bookie which has been flushed is 
> still valid.

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