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https://issues.apache.org/jira/browse/ACCUMULO-4686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16100377#comment-16100377
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Ivan Bella commented on ACCUMULO-4686:
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The code suggests that this is done correctly (Accumulo.upgradeAccumuloVersion)
however we definitely had an instance where this failed. Doing more
investigation as to why.
> 1.8 upgrade path does not update version on multiple volumes
> ------------------------------------------------------------
>
> Key: ACCUMULO-4686
> URL: https://issues.apache.org/jira/browse/ACCUMULO-4686
> Project: Accumulo
> Issue Type: Bug
> Components: master
> Affects Versions: 1.8.1
> Reporter: Ivan Bella
> Assignee: Ivan Bella
> Fix For: 1.8.2, 2.0.0
>
>
> The upgrade path from 1.6+ to 1.8 does not update the version across all
> volumes in a multi-hdfs-volume cluster. Only one of them gets updated and
> subsequently all of the tservers will complain and ultimately fail.
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