[jboss-jira] [JBoss JIRA] (WFCORE-3948) Potential race condition on deployment of EAR when Class-Path manifest entry is in use

[Scott Marlow (Jira)]

    [ https://issues.jboss.org/browse/WFCORE-3948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13788173#comment-13788173 ] 

Scott Marlow commented on WFCORE-3948:
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Could it help to get the "topLevelDeployment.addToAttachmentList(Attachments.ADDITIONAL_MODULES, module)" call to happen before the subdeployers are called?

Alternative could be to have readers (and writer) of Attachments.ADDITIONAL_MODULES synchronize, which slows deployment down but might help complex deployments that might be hitting this but not reporting it.

[~yersan] have you looked at this before?

> Potential race condition on deployment of EAR when Class-Path manifest entry is in use
> --------------------------------------------------------------------------------------
>
>                 Key: WFCORE-3948
>                 URL: https://issues.jboss.org/browse/WFCORE-3948
>             Project: WildFly Core
>          Issue Type: Bug
>          Components: Server
>            Reporter: Stuart Douglas
>            Priority: Major
>
> Attachments#ADDITIONAL_MODULES is attached to the top level DU, but modified by sub deployments in ManifestClassPathProcessor#createAdditionalModule without any sort of synchronisation. This can result in ConcurrentModificationException when the list is read/written to by other sub deployments at the same time.



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