[jboss-jira] [JBoss JIRA] (WFLY-1693) ConcurrentModificationException when iterating over Host.getDeployments()

[Tomaz Cerar (JIRA)]

     [ https://issues.jboss.org/browse/WFLY-1693?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tomaz Cerar resolved WFLY-1693.
-------------------------------

    Fix Version/s: 8.0.0.Alpha3
       Resolution: Done

    
> ConcurrentModificationException when iterating over Host.getDeployments()
> -------------------------------------------------------------------------
>
>                 Key: WFLY-1693
>                 URL: https://issues.jboss.org/browse/WFLY-1693
>             Project: WildFly
>          Issue Type: Bug
>          Components: Web (Undertow)
>    Affects Versions: 8.0.0.Alpha2
>            Reporter: Ken Finnigan
>            Assignee: Tomaz Cerar
>             Fix For: 8.0.0.Alpha3
>
>
> Though I understand the reasoning behind using Collections.unmodifiableSet() for the deployments returned from Host.getDeployments(), as its backed by the underlying Set this can still be a problem.
> In making GateIn work on Wildfly, I found that on occasion when iterating over Host.getDeployments() during container startup, I would encounter a ConcurrentModificationException if a new Deployment was added at the same point I was looping through the existing deployments by calling Iterator.next()
> It would be great if the Collection returned from Host.getDeployments() could be a copy of the underlying collection to prevent possible ConcurrentModificationExceptions.

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