That thread pool subsystem is for AS related Teiid activities that happen during deployment, such as metadata loads. It is unrelated to the engine.
In the standalone.xml that's updated from the teiid cli script, max-threads indicate:
<subsystem xmlns="urn:jboss:domain:threads:1.1">
<bounded-queue-thread-pool name="teiid-async">
<queue-length count="100"/>
<max-threads count="4"/>
</bounded-queue-thread-pool>
</subsystem>
Is this the max-threads setting, or is there one to be set in the "teiid" subsystem?