Possibly related to AS-1304

See the forum (link below) for details on how to reproduce.

In the resource-adapter connection definition when you specify properties for the adapter like so:

<connection-definition class-name="org.apache.jackrabbit.jca.JCAManagedConnectionFactory"
jndi-name="java:/jca/DocumentStore" enabled="true" use-java-context="true"
pool-name="jackrabbit-jca-2_2_7_rar-Pool" use-ccm="true">
<config-property name="HomeDir">
/Users/bwallis/InfoMedix/JBoss/jboss-as-7.1.0.Alpha1-SNAPSHOT/repository
</config-property>
<config-property name="ConfigFile">
/Users/bwallis/InfoMedix/JBoss/jboss-as-7.1.0.Alpha1-SNAPSHOT/repository/repository.xml
</config-property>
...

The values passed through to the resource adapter seems to come through as the strings

("HomeDir" => "/Users/bwallis/InfoMedix/JBoss/jboss-as-7.1.0.Alpha1-SNAPSHOT/repository")
("ConfigFile" => "/Users/bwallis/InfoMedix/JBoss/jboss-as-7.1.0.Alpha1-SNAPSHOT/repository/repository.xml")

ie: not just the path as required. Result in the jackrabbit adapter case is that a directory called '("HomeDir" => "' is created.