The ra.xml file for the infinispan connector defined incorrectly the WrrappedConnection and WrappedConnectionFactory classes. Should be:

<connectionfactory-impl-class>org.teiid.resource.spi.WrappedConnectionFactory</connectionfactory-impl-class>
<connection-impl-class>org.teiid.resource.spi.WrappedConnection</connection-impl-class>