如何在oozie工作流中将数据从一个动作传递到另一个动作

Question

在动作“A1”中我添加两个数字10＆amp;因此结果将为30.现在该结果30应作为下一个动作“A2”的输入。怎么做？

<workflow-app name="JavaFlow1" xmlns="uri:oozie:workflow:0.4">
<start to="A1"/>
<action name="A1">
    <java>
        <job-tracker>${jobTracker}</job-tracker>
        <name-node>${nameNode}</name-node>
        <main-class>com.demo.Test1</main-class>
        <arg>10</arg>
        <arg>20</arg>
        <capture-output/>
    </java>
    <ok to="A2"/>
    <error to="kill"/>
</action>
<action name="A2">
    <java>
        <job-tracker>${jobTracker}</job-tracker>
        <name-node>${nameNode}</name-node>
        <main-class>com.demo.Test2</main-class>
        <arg>100</arg>
        <capture-output/>
    </java>
    <ok to="end"/>
    <error to="kill"/>
</action>
<kill name="kill">
    <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
</kill>
<end name="end"/>