[jboss-jira] [JBoss JIRA] (AS7-4828) JGroups subsystem protocol properties should support expressions

[Brian Stansberry (JIRA)]

    [ https://issues.jboss.org/browse/AS7-4828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12714049#comment-12714049 ] 

Brian Stansberry commented on AS7-4828:
---------------------------------------

Did 7.1.2 actually not support expressions at all?  My understanding is it did, but not properly, i.e. the expressions were resolved by the JGroups system property replacement logic. And there was a bug related to that.

That improper support isn't ideal, but it may have worked for a lot of use cases. Rejecting the expression now would break those use cases. In particular it would make a rolling upgrade of a cluster problematic, perhaps impossible.

Apologies in advance if my understanding of the situation in 7.1.2 is incorrect.
                
> JGroups subsystem protocol properties should support expressions
> ----------------------------------------------------------------
>
>                 Key: AS7-4828
>                 URL: https://issues.jboss.org/browse/AS7-4828
>             Project: Application Server 7
>          Issue Type: Feature Request
>          Components: Clustering
>    Affects Versions: 7.1.2.Final (EAP)
>            Reporter: Paul Ferraro
>            Assignee: Richard Achmatowicz
>             Fix For: 7.2.0.Alpha1
>
>
> A sample use case:
> <protocol type="TCPPING">
>   <property name="initial_hosts">${jgroups.tcpping.initial_hosts}</property>
> </protocol>

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