[jboss-jira] [JBoss JIRA] (WFCORE-3895) module.path of embedded server cannot be modified after it is set

[Jeff Mesnil (JIRA)]

    [ https://issues.jboss.org/browse/WFCORE-3895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13582701#comment-13582701 ] 

Jeff Mesnil commented on WFCORE-3895:
-------------------------------------

[~jamezp] this regression happened with WFCORE-3205 since 5.0.0.Beta1.

This is a regression against WildFly 12 and this should be fixed before WildFly 13 is released

> module.path of embedded server cannot be modified after it is set
> -----------------------------------------------------------------
>
>                 Key: WFCORE-3895
>                 URL: https://issues.jboss.org/browse/WFCORE-3895
>             Project: WildFly Core
>          Issue Type: Bug
>          Components: Embedded
>    Affects Versions: 5.0.0.Beta5
>            Reporter: Erich Duda
>            Assignee: James Perkins
>            Priority: Blocker
>
> *Scenario:*
> * Run CLI in non-modular class loading mode.
> * Run embed-server with {{--jboss-home}} pointing to server A
> * Stop embed-server
> * Remove server A
> * Run embed-server with {{--jboss-home}} pointing to server B
> *Expectation:* embed-server with {{--jboss-home}} pointing to server B will boot.
> *Reality*: The following error message is thrown. As you can see the embed server tries to load modules from server A directory even if the jboss-home was set to server B.
> {code}
> Cannot start embedded server: The first directory of the specified module path /home/eduda/Projects/wildfly/dist/target/wildfly-A/modules is invalid or does not exist.
> {code}
> *Users impact:* Behavior of non-modular class loading \[1\] has changed. This change can break user's automation or tests.
> *Blocker priority* was chosen because this is change in behavior against Wildfly 12.
> *Technical details*
> When the embed-server is started for the second time, following warning is logged.
> {code}
> 2018-05-28 08:10:57,621 WARN  [org.jboss.as.embedded] (main) WFLYEMB0145: The module loader has already been configured. Changing the module.path property will have no effect
> {code}
> It seems that the change in behavior was caused by commit \[2\].
> \[1\] http://wildfly.org/news/2015/03/13/Offline-CLI/#classloading
> \[2\] https://github.com/wildfly/wildfly-core/commit/22f3956f1adcdf8b1cb11e24f2b904dd4e900429



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