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https://issues.apache.org/jira/browse/QPID-7783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16012735#comment-16012735
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ASF subversion and git services commented on QPID-7783:
-------------------------------------------------------
Commit b63815ceb13127a1b84266462aefe2c103adc34c in qpid-broker-j's branch
refs/heads/master from [~lorenz.quack]
[ https://git-wip-us.apache.org/repos/asf?p=qpid-broker-j.git;h=b63815c ]
QPID-7783: [Java Broker] Dispose of QpidByteBuffers associated with message
content/headers when stopping/closing a VirtualHost
> Closing a virtualhost does not dispose QBBs associated with messages on queues
> ------------------------------------------------------------------------------
>
> Key: QPID-7783
> URL: https://issues.apache.org/jira/browse/QPID-7783
> 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-broker-7.0.0
>
>
> If I close a virtualhost (either via management or owing to a change of HA
> mastership), the QBBs that hold message header and payload don't get
> released. The QBBs won't fall back into the pool and the JVMs will have to
> reclaim the direct memory (which it does inefficiently).
> On trunk, 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 associated with the
> messages. As the recovery paths uses heap byte buffers: messages recovered
> by it are not affected by this problem.
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