Oozie fork节点配置，来自Oozie官网

<workflow-app name="sample-wf" xmlns="uri:oozie:workflow:0.1">
    ...
    <fork name="forking">
        <path start="firstparalleljob"/>
        <path start="secondparalleljob"/>
    </fork>
    <action name="firstparallejob">
        <map-reduce>
            <job-tracker>foo:8021</job-tracker>
            <name-node>bar:8020</name-node>
            <job-xml>job1.xml</job-xml>
        </map-reduce>
        <ok to="joining"/>
        <error to="kill"/>
    </action>
    <action name="secondparalleljob">
        <map-reduce>
            <job-tracker>foo:8021</job-tracker>
            <name-node>bar:8020</name-node>
            <job-xml>job2.xml</job-xml>
        </map-reduce>
        <ok to="joining"/>
        <error to="kill"/>
    </action>
    <join name="joining" to="nextaction"/>
    ...
</workflow-app>