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https://issues.apache.org/jira/browse/HBASE-8015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13594961#comment-13594961
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Francis Liu commented on HBASE-8015:
------------------------------------

{quote}
w.r.t. dot in table name:

  public static final String VALID_USER_TABLE_REGEX = 
"(?:[a-zA-Z_0-9][a-zA-Z_0-9.-]*)";

So dot should be allowed
{quote}
Thanks for the clarification. It seems like '.' and '-' isn't allowed only if 
it's the first character. For backward compatibility why don't we create 
namespaces for those tables that are named that way? 

                
> Support for Namespaces
> ----------------------
>
>                 Key: HBASE-8015
>                 URL: https://issues.apache.org/jira/browse/HBASE-8015
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Francis Liu
>            Assignee: Francis Liu
>         Attachments: NamespaceDesign.pdf
>
>


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