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https://issues.apache.org/jira/browse/HBASE-10883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13956541#comment-13956541
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Anoop Sam John commented on HBASE-10883:
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Why to add pattern and regex to HConstants?
We better keep the validation at server side?
And move it to VisibilityLabelsValidator?
VisibilityLabelsValidator#isValidLabel(String)
> Restrict the universe of labels and authorizations
> --------------------------------------------------
>
> Key: HBASE-10883
> URL: https://issues.apache.org/jira/browse/HBASE-10883
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.98.1
> Reporter: Andrew Purtell
> Fix For: 0.99.0, 0.98.2
>
> Attachments: HBASE-10883.patch, HBASE-10883_1.patch
>
>
> Currently we allow any string as visibility label or request authorization.
> However as seen on HBASE-10878, we accept for authorizations strings that
> would not work if provided as labels in visibility expressions. We should
> throw an exception at least in cases where someone tries to define or use a
> label or authorization including visibility expression operators '&', '|',
> '!', '(', ')'.
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