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https://issues.apache.org/jira/browse/ARTEMIS-874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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clebert suconic closed ARTEMIS-874.
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> ThreadGroup memory leak
> -----------------------
>
> Key: ARTEMIS-874
> URL: https://issues.apache.org/jira/browse/ARTEMIS-874
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Affects Versions: 1.5.0
> Reporter: Damien Hollis
> Fix For: 2.1.0
>
>
> Each ActiveMQConnection has a failoverListenerExecutor, which is initialized
> using the code
> {code:java}
> Executors.newFixedThreadPool(1, ActiveMQThreadFactory.defaultThreadFactory());
> {code}
> Which creates a new ActiveMQThreadFactory and the factory has a ThreadGroup.
> When ThreadGroups are created, they are added to an array on their parent
> ThreadGroup. In our testing, the array of ThreadGroups just keeps growing as
> we keep creating ActiveMQConnections. The problem seems to be that nobody is
> destroying the ThreadGroups (ThreadGroup.destroy()). Note: the
> ActiveMQConnection etc are all cleaned up correctly.
> I've managed to workaround this issue by caching the ActiveMQConnection but
> in some environments this might not be possible.
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