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https://issues.apache.org/jira/browse/ACCUMULO-1970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13840576#comment-13840576
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John Vines commented on ACCUMULO-1970:
--------------------------------------

agreed on deprecation cycles and such. That was a whim, but we can at least 
start with a good base for namespaces since that's a fresh API.

My only real concern about extending them is I think IDEs will want to simplify 
the APIs to throw AccumuloException when there are other Exceptions that extend 
it, but having that enumeration is monumentally helpful to users.

> Namespaces need to create appropriate exceptions
> ------------------------------------------------
>
>                 Key: ACCUMULO-1970
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1970
>             Project: Accumulo
>          Issue Type: Bug
>          Components: client
>            Reporter: John Vines
>            Priority: Blocker
>             Fix For: 1.6.0
>
>
> The ACCUMULO-820 patch left some very strange spaces in the client API around 
> errors regarding namespaces. Dominantly, they are exceptions masked as 
> generic AccumuloExceptions or NamespaceNotFoundExceptions wrapped in 
> IllegalArgument and RuntimeExceptions. We need consistency and accuracy for 
> these prior to putting out an API for them.



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