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https://issues.apache.org/jira/browse/ACCUMULO-241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13178805#comment-13178805
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David Medinets commented on ACCUMULO-241:
-----------------------------------------
Not to be obtuse but what is the purpose of any restrictions? I am new to
Accumulo so I don't grok how a label is used. If this information is already
documented, I can go look it up.
> Visibility labels should blacklist non-ASCII characters instead of
> whitelisting select ASCII characters
> -------------------------------------------------------------------------------------------------------
>
> Key: ACCUMULO-241
> URL: https://issues.apache.org/jira/browse/ACCUMULO-241
> Project: Accumulo
> Issue Type: Improvement
> Affects Versions: 1.3.5
> Reporter: John Vines
> Labels: visibility
> Fix For: 1.3.6
>
>
> We currently whitelist our visibility labels to only allow alphanumerics and
> a few select delimiting characters. While we strive for human-readable
> labels, we should instead utilize a blacklist approach where we disallow
> parentheses, ampersands, pipes, and any non-ASCII characters. This will
> provide users with more flexibility in labeling, while still sticking to
> human readability.
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