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https://issues.apache.org/jira/browse/IGNITE-6456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16323627#comment-16323627
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Roman Kondakov commented on IGNITE-6456:
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[~ptupitsyn],
* Exceptions look appropriate solution for this case due to multiple possible 
causes of failure - wrong client, disabled client or unsupported version. And 
exception here is a quite convenient way to stop execution and transfer an 
error message back to the client.
* I've fixed error message.

[~vozerov], [~ptupitsyn], please review. [TC 
run|https://ci.ignite.apache.org/viewLog.html?buildId=1034773&;] is not OK, but 
failures are caused by problems in the master branch. JDBC tests are ok.

> Add flags to ClientConnectorConfiguration which enable/disable different 
> clients
> --------------------------------------------------------------------------------
>
>                 Key: IGNITE-6456
>                 URL: https://issues.apache.org/jira/browse/IGNITE-6456
>             Project: Ignite
>          Issue Type: Improvement
>          Components: jdbc, odbc, thin client
>    Affects Versions: 2.1
>            Reporter: Igor Sapego
>            Assignee: Roman Kondakov
>              Labels: usability
>             Fix For: 2.4
>
>
> There is currently no way to disable only one client. For example, currently 
> you can't disallow thin JDBC driver connectivity alone, you can only disable 
> the whole {{ClientListenerProcessor}}, which is going to disable ODBC and 
> thin .NET clients as well.
> We should add options to disable/enable every single client, supported by the 
> {{ClientListenerProcessor}} separately. For example, we can add flags to the 
> {{ClientConnectorConfiguration}}:
> {{allowJdbc}}
> {{allowOdbc}}
> {{allowClient}}



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