JBoss EAP 6.1 connector generates CLOSE_WAIT sockets when used with an executor

Issue

• We have configured our JBoss web subsystem's connector to use an executor for its thread pool. This is a non blocking, bounded queue executor with no hand off executor, for example:

    <subsystem xmlns="urn:jboss:domain:threads:1.1">
        <thread-factory name="http-connector-factory-a" group-name="http-a" thread-name-pattern="HTTP-%t" />
        <bounded-queue-thread-pool name="web-a">
            <core-threads count="2"/>
            <queue-length count="2"/>
            <max-threads count="2"/>
            <thread-factory name="http-connector-factory-a"/>
        </bounded-queue-thread-pool>
    </subsystem>
    <subsystem xmlns="urn:jboss:domain:web:1.4" default-virtual-server="default-host" native="false">
        <connector name="http" protocol="HTTP/1.1" scheme="http" socket-binding="http" executor="web-a"/>
        ...
     </subsystem>

• When this executor's thread pool and queue is full, JBoss starts generating CLOSE_WAIT sockets for subsequent, additional connections.