[jira] [Created] (QPID-7465) [Java Broker] Stop ServerEncoder from unnecessarily allocating ByteBuffers

["Lorenz Quack (JIRA)" <ji...@apache.org>]

Lorenz Quack created QPID-7465:
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             Summary: [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


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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