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https://issues.apache.org/jira/browse/HBASE-11438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14087247#comment-14087247
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ramkrishna.s.vasudevan commented on HBASE-11438:
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bq.That means we wont be having any validation for lables, while addLable() and 
those in Authorizations?
Yes we won't have.  Because we are going to allow any character as the label or 
in authorization.

> [Visibility Controller] Support UTF8 character as Visibility Labels
> -------------------------------------------------------------------
>
>                 Key: HBASE-11438
>                 URL: https://issues.apache.org/jira/browse/HBASE-11438
>             Project: HBase
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 0.98.4
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.98.6
>
>         Attachments: HBASE-11438_v1.patch, HBASE-11438_v2.patch, 
> HBASE-11438_v3.patch, HBASE-11438_v4.patch, HBASE-11438_v5.patch, 
> HBASE-11438_v6.patch, HBASE-11438_v7.patch
>
>
> This would be an action item that we would be addressing so that the 
> visibility labels could have UTF8 characters in them.  Also allow the user to 
> use a client supplied API that allows to specify the visibility labels inside 
> double quotes such that UTF8 characters and cases like &, |, ! and double 
> quotes itself could be specified with proper escape sequence.  Accumulo too 
> provides one such API in the client side.



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