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Posted to dev@bookkeeper.apache.org by "Ivan Kelly (JIRA)" <ji...@apache.org> on 2011/09/20 14:07:09 UTC

[jira] [Commented] (BOOKKEEPER-68) Conditional setData

    [ https://issues.apache.org/jira/browse/BOOKKEEPER-68?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13108620#comment-13108620 ] 

Ivan Kelly commented on BOOKKEEPER-68:
--------------------------------------

This patch seems to just cause the open ledger to fail. Shouldn't the failing one just retry to read the metadata?


> Conditional setData
> -------------------
>
>                 Key: BOOKKEEPER-68
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-68
>             Project: Bookkeeper
>          Issue Type: Bug
>            Reporter: Flavio Junqueira
>            Assignee: Flavio Junqueira
>         Attachments: BOOKKEEPER-68.patch
>
>
> The write to ZooKeeper to store ledger metadata when closing a ledger must be conditional, otherwise concurrent clients might end up writing in a way that the update of a client overwrites the update of the other. 

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