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

[Ken Finnigan (JIRA)]

Ken Finnigan created WFLY-1693:
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             Summary: 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: Stuart Douglas


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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