oozie workflow hdfs example

oozie_hdfs_el.xml

<workflow-app xmlns="uri:oozie:workflow:0.5" name="workflow-example">
    <parameters>
        <property>
            <name>param1</name>
            <value>hdfs://url/</value>
        </property>
    </parameters>

    <start to="decision" />

    <decision name="decision">
        <switch>
            <case to="action1">
                ${ fs:dirSize(param1) gt 0 }
            </case>
            <default to="action_default" />
        </switch>
    </decision>
    
    <action name="action_default">

    <action name="action1">
</workflow>