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https://issues.apache.org/jira/browse/QPID-7784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lorenz Quack resolved QPID-7784.
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Resolution: Fixed
Keith and I paired on this work
> Closing a virtualhost does not dispose QBBs still associated with pooled IO
> threads
> -----------------------------------------------------------------------------------
>
> Key: QPID-7784
> URL: https://issues.apache.org/jira/browse/QPID-7784
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Affects Versions: qpid-java-6.0, qpid-java-6.0.6, qpid-java-6.1,
> qpid-java-6.1.2
> Reporter: Keith Wall
> Fix For: qpid-java-6.0.7, qpid-java-broker-7.0.0, qpid-java-6.1.3
>
>
> If I close a virtualhost (either via management or owing to a change of HA
> mastership), the QBBs that are associated with pooled IO threads don't get
> disposed.
> This causes the value returned by {{QBB.getNumberOfActivePooledBuffers()}} to
> be incorrect. This value is used to determine when to flow to disk, to this
> would cause flow to disk to be more frequent than it needs.
> This problem does exist on 6.0/6.1, but is not particular impactful. The
> garbage collector will eventually collect the QBBs and the associated direct
> memory. The number of threads in the pool is small, so this probably won't
> cause a problem.
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