The web-clustering Galleon layer in the eap-cloud-galleon-pack (tested with 1.1.0.Final-redhat-00001) used by the eap-8.0 channel adds the following replicated-cache to the standalone.xml file:

<replicated-cache name="repl">
    <locking isolation="REPEATABLE_READ"/>
    <transaction mode="BATCH"/>
    <expiration interval="0"/>
    <file-store/>
</replicated-cache>

Unfortunately, due to WFLY-16672, it looks like the default values of the purge and passivation attributes of the file-store tag changed from true to false. This means that the above definition is effectively <file-store purge="false" passivation="false" />, which is not optimal in a clustered environment.

The eap-cloud-galleon-pack should be updated to specify <file-store purge="true" passivation="true" />.

Note: The actual definitions seem to be coming from the wildfly-cekit-modules/web-clustering which references os-infinispan-web-repl-cache.xml.

Workaround

It is possible to use the packaging-scripts feature of the eap-maven-plugin to run jboss-cli commands like the following which set the attributes to true:

<packaging-scripts>
    <execution>
        <commands>
            <command>/subsystem=infinispan/cache-container=web/replicated-cache=repl/store=file:write-attribute(name=purge,value=true)</command>
            <command>/subsystem=infinispan/cache-container=web/replicated-cache=repl/store=file:write-attribute(name=passivation,value=true)</command>
        </commands>
    </execution>
</packaging-scripts>