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https://issues.apache.org/jira/browse/ZOOKEEPER-596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mahadev konar updated ZOOKEEPER-596:
------------------------------------

    Attachment: ZOOKEEPER-596.patch

looks like the patch got stale.... uploading a new patch that applies to the 
trunk.




> The last logged zxid calculated by zookeeper servers could cause problems in 
> leader election if data gets corrupted.
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-596
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-596
>             Project: Zookeeper
>          Issue Type: Bug
>    Affects Versions: 3.2.1
>            Reporter: Mahadev konar
>            Assignee: Mahadev konar
>             Fix For: 3.3.0
>
>         Attachments: ZOOKEEPER-596.patch, ZOOKEEPER-596.patch, 
> ZOOKEEPER-596.patch, ZOOKEEPER-596.patch
>
>
> It is possible that the last loggged zxid as reported by all the servers 
> during leader election is not the last zxid that the server can upload data 
> to. It is very much possible that some transaction or snapshot gets corrupted 
> and the servers actually do not have valid data till last logged zxid. We 
> need to make sure that what the servers report as there last logged zxid, 
> they are able to load data till that zxid.

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