[jboss-jira] [JBoss JIRA] (AS7-2948) Unsupported messaging subsystem configuration attributes silently ignored

[Brian Stansberry (JIRA)]

    [ https://issues.jboss.org/browse/AS7-2948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12660275#comment-12660275 ] 

Brian Stansberry commented on AS7-2948:
---------------------------------------

There are different factors at play here.

First, the parser should definitely catch and reject unknown elements/attributes. If it doesn't, that's a bug.

Handling unknown parameters coming in on operation requests is more complex.

In a very specific situation like what is described, where a config that's correct on resource type A but not on closely related resource type B is applied to B, the operation handler for B *can* throw an OperationFailedException.

Otherwise, at most it should log a WARN. It's important not to indiscriminately throw exceptions on operations where unknown parameters are received, as that will make it difficult to achieve backward compatibility when hosts running different versions of the AS are operating in a managed domain.
                
> Unsupported messaging subsystem configuration attributes silently ignored
> -------------------------------------------------------------------------
>
>                 Key: AS7-2948
>                 URL: https://issues.jboss.org/browse/AS7-2948
>             Project: Application Server 7
>          Issue Type: Bug
>          Components: JMS
>    Affects Versions: 7.1.0.Beta1
>            Reporter: Martin Vecera
>            Assignee: Andy Taylor
>
> When there is an unsupported configuration attribute in standalone.xml, it is silently ignored and deleted from the configuration without a single warning the first time the server writes the configuration back to the disk. Sample piece of configuration (in standalone.xml):
>                    <connection-factory name="RemoteConnectionFactory">
>                         <transaction mode="xa"/>
>                         <connectors>
>                             <connector-ref connector-name="netty"/>
>                         </connectors>
>                         <entries>
>                             <entry name="RemoteConnectionFactory"/>
>                         </entries>
>                     </connection-factory>
> Transaction mode is unsupported in an ordinary connection-factory. It must be pooled-connection-factory.

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