The configuration of partition-handling has only one element which is placed inside the configuration for replicated/distributed cache:

          <xs:element name="partition-handling" minOccurs="0" maxOccurs="1">
             <xs:annotation>
                <xs:documentation>
                   Configures the way this cache reacts to node crashes and split brains.
                </xs:documentation>
             </xs:annotation>
             <xs:complexType>
                <xs:attribute name="enabled" type="xs:boolean" use="optional">
                   <xs:annotation>
                      <xs:documentation>
                         Enable/disable the partition handling functionality. Defaults to false.
                      </xs:documentation>
                   </xs:annotation>
                </xs:attribute>
             </xs:complexType>
          </xs:element>

Changed the doc text to reflect that the feature can be used. It's just the configuration schema that misses information about configuration.

PR: https://github.com/infinispan/jdg/pull/390

The partition handling configuration for library mode now looks like this:
<partitionHandling enabled="true" /> ,
and is placed inside <clustering> configuration element.