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https://issues.apache.org/jira/browse/QPID-7465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15594510#comment-15594510
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Alex Rudyy commented on QPID-7465:
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The changes look reasonable. We need to port them into 6.0.5
> [Java Broker] Stop ServerEncoder from unnecessarily allocating ByteBuffers
> --------------------------------------------------------------------------
>
> Key: QPID-7465
> URL: https://issues.apache.org/jira/browse/QPID-7465
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Reporter: Lorenz Quack
> Assignee: Alex Rudyy
> Fix For: qpid-java-6.0.5
>
> Attachments: QPID-7465.diff, QPID-7465_v2.diff, QPID-7465_v2.diff
>
>
> As reported by [this email
> thread|http://qpid.2158936.n2.nabble.com/java-broker-6-0-2-OOM-tp7651831.html]
> the broker can currently run out of direct memory without flow-to-disk ever
> kicking in.
> A defect in {{SeverEncoder#init()}} means that we allocate a new 8 kB direct
> bytebuffer everytime it is called (i.e. on every AMQP 0-10 method or
> command). This is wasteful and in some cases the GC does not collect these
> direct byte buffers fast enough leading to the OOM.
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