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https://issues.apache.org/jira/browse/BOOKKEEPER-665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13722603#comment-13722603
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Ivan Kelly commented on BOOKKEEPER-665:
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Speculative reads should handle the case where a bookie is down. Do you have 
speculative reads disabled? How long is the timeout you are having to wait?
                
> BK client should not try to read entries from non-available bookies
> -------------------------------------------------------------------
>
>                 Key: BOOKKEEPER-665
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-665
>             Project: Bookkeeper
>          Issue Type: Bug
>            Reporter: Matteo Merli
>            Assignee: Matteo Merli
>            Priority: Minor
>         Attachments: BOOKKEEPER-665.patch
>
>
> If a bookie is not in the available list, we shouldn't try to read from it 
> but just treat the read from that replica as failed.
> This could be especially true if the bookie node is partitioned because that 
> could mean we need to wait the connection timeout. Also during the 
> auto-replication of ledgers most of the logs consist of errors that say it 
> was not possible to read from the failed bookie.

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