dnet-hadoop/dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/graph/mergeentities/oozie_app/config-default.xml

<configuration>
    <property>
        <name>oozie.use.system.libpath</name>
        <value>true</value>
    </property>
    <property>
        <name>oozie.action.sharelib.for.spark</name>
        <value>spark2</value>
    </property>
</configuration>