executor="HTTPThreadPool" parameter in EAP 6

Issue

• The application vendor has suggested to put in executor="HTTPThreadPool" parameter in the web subsystem.we do not have it in the existing config file(attached domain.xml) and everything looks to be working fine.
• We wanted to understand what the executor="HTTPThreadPool" parameter in the web subsystem does and if it is required or if there is a default that gets picked up.

Thread Subsystem: -
           <subsystem xmlns="urn:jboss:domain:threads:1.1">
                <bounded-queue-thread-pool name="HTTPThreadPool" allow-core-timeout="true">
                    <core-threads count="${http.threadpool.corethreads:100}"/>
                    <queue-length count="${http.threadpool.queuelength:500}"/>
                    <max-threads count="${http.threadpool.maxthreads:100}"/>
                    <keepalive-time time="${http.threadpool.keepalivetime.seconds:60}" unit="seconds"/>
                </bounded-queue-thread-pool>
            </subsystem>

Web subsystem: - 

            <subsystem xmlns="urn:jboss:domain:web:2.1" default-virtual-server="default-host" instance-id="${jboss.node.name}" native="true">
                <connector name="http" protocol="HTTP/1.1" scheme="http" socket-binding="http"/>
                <connector name="HTTPS" protocol="HTTP/1.1" scheme="https" socket-binding="https" secure="true" max-connections="${http.threadpool.maxthreads:100}">
                </connector>