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https://issues.apache.org/jira/browse/HBASE-6858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475164#comment-13475164
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stack commented on HBASE-6858:
------------------------------

bq. I think the patch doesn't break rolling upgrade because, in retrieving 
data, we use the dynamical id length from the data, not the static copy.

I thought you were writing the seed into znode?
                
> Fix the incorrect BADVERSION checking in the recoverable zookeeper
> ------------------------------------------------------------------
>
>                 Key: HBASE-6858
>                 URL: https://issues.apache.org/jira/browse/HBASE-6858
>             Project: HBase
>          Issue Type: Bug
>          Components: Zookeeper
>            Reporter: Liyin Tang
>            Assignee: Liyin Tang
>            Priority: Critical
>             Fix For: 0.96.0
>
>         Attachments: HBASE-6858.patch, HBASE-6858_v2.patch, 
> HBASE-6858_v3.patch, trunk-6858.patch
>
>
> Thanks for Stack and Kaka's reporting that there is a bug in the recoverable 
> zookeeper when handling BADVERSION exception for setData(). It shall compare 
> the ID payload of the data in zk with its own identifier.

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