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https://issues.apache.org/jira/browse/PHOENIX-4800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16527607#comment-16527607
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Janos Gub commented on PHOENIX-4800:
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Thanks [~jamestaylor] will come back with a patch.
> Disallow using a "." in table names
> -----------------------------------
>
> Key: PHOENIX-4800
> URL: https://issues.apache.org/jira/browse/PHOENIX-4800
> Project: Phoenix
> Issue Type: Bug
> Environment: phoenix master 6acdae0ff1a63980f40fe1b794d40ab949cc423d
> with hbase branch-1.4 defe97edb9f95600ec44525c47a2b23da643da2a
> Reporter: Janos Gub
> Assignee: Janos Gub
> Priority: Major
>
> While namespace mapping is disabled the following two tables can be created
> and will point to the same hbase table:
> CREATE TABLE A.B (x INTEGER PRIMARY KEY);
> CREATE TABLE "A.B" (y varchar PRIMARY KEY);
> It is because MetaDataEndpointImpl will determine if a table is created by
> checking the presence of the byte table key in the metadata cache. But the
> byte key for A.B is 00410042 and the byte key for "A.B" is 0041e242.
> This causes other issues I will link to this ticket.
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