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https://issues.apache.org/jira/browse/HBASE-10581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13909061#comment-13909061
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Jeffrey Zhong commented on HBASE-10581:
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{quote}
It's kind of crazy to even tacitly support customers writing their own custom
znodes under /hbase , right?
{quote}
It sounds crazy but never under estimate our users' innovation here. In
addition, cleaning data without knowing what it is also seems a bit dangerous.
I'll wait more time to see if other more folks want to delete unknown znodes at
the end. If that's the case, I'll amend the patch otherwise I'll check the
current version early next week. Thanks for the reviews & feedbacks.
> ACL znode are left without PBed during upgrading hbase0.94* to hbase0.96+
> -------------------------------------------------------------------------
>
> Key: HBASE-10581
> URL: https://issues.apache.org/jira/browse/HBASE-10581
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.0, 0.96.0, 0.96.1
> Reporter: Jeffrey Zhong
> Assignee: Jeffrey Zhong
> Priority: Critical
> Attachments: hbase-10581.patch
>
>
> ACL znodes are left in the upgrade process when upgrading 0.94 to 0.96+
> Those 0.94 znodes will choke HMaster because their data aren't PBed.
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