Running Oozie SSH + Java Action

Question

How to run a SSH+JAVA Action ? .

I need to run SSH action to my remote machine. In which in my remote machine i had a jar file + properties file has to get executed. How to write a workflow for this ?

In that case whether jar file will be copied from oozie lib folder to the remote machine . If so in which place it will be copied /home/user/oozie-oozi/

I had wrote a workflow like below

   <action name="ssh-FileValidation">
    <ssh xmlns="uri:oozie:ssh-action:0.1">
         <host>user@myremotenode-ip</host>
            <command>/home/user/testscript.sh</command>
    </ssh>
    <ok to="mr-job"/>
    <error to="fail"/>
</action>

For the Above solution i need to copy the jar file and Properties file to my remote machine.

Is there any other way in that i need not required to copy jar file to each machine . As while running oozie ,oozie itself will copy required jar file to the location in which jar will be getting executed

FYI, But remote machine mounted in hadoop installed cluster only .

Dmitry Dmitry · Accepted Answer · 2014-07-14T13:53:35

Put your jar into lib directory near your workflow.xml in HDFS, and properties file near workflow.xml:

/user/syed/super-oozie-app/
  workflow.xml
  super-oozie-app.properties
  lib/
    super-oozie-app.jar

Then you can define Java action as follows (supposing com.example.SuperOozieAppAction class is located in super-oozie-app.jar and it has main method that you want to run):

<action name="super-oozie-app-action">
    <java>
        ...
        <main-class>com.example.SuperOozieAppAction</main-class>
        <file>super-oozie-app.properties#super-oozie-app.properties</file>
    </java>
    ...
</action>

This way Oozie solves the problem of files distribution for you. SuperOozieAppAction will be started and super-oozie-app.properties will be located in its current directory.

Read more about java actions here and about files distribution here.

Running Oozie SSH + Java Action

1 Answers