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https://issues.apache.org/jira/browse/MAHOUT-848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timothy Potter updated MAHOUT-848:
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    Fix Version/s: 0.7
           Status: Patch Available  (was: Open)

Needed to override Configured's setConf method to install the Oozie action 
configuration resource on the provided Configuration object. This isn't ideal 
but is safe since Hadoop's ToolRunner calls setConf before it calls run.
                
> M/R job launching code should add Oozie's action.xml as a configuration 
> resource of the Hadoop Configuration object
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-848
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-848
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Integration
>    Affects Versions: 0.6
>         Environment: oozie workflow
>            Reporter: Timothy Potter
>            Priority: Minor
>              Labels: oozie
>             Fix For: 0.7
>
>
> Here's an overview of what is happening:
> Oozie workflow has a sub-workflow (and in my case a sub-workflow to the 
> sub-workflow, so 3 levels down) that launches a Mahout job, such as the 
> vectorizer as a Java action. This job fails due to class loading issues, e.g. 
> vectorizer code cannot load a Lucene class, which it's definitely in the job 
> jar and definitely gets found just fine if launched from a simple Oozie 
> (1-level) workflow.
> The solution is to include Oozie's action.xml as a configuration resource of 
> the Hadoop Configuration object, i.e.
>         String oozieActionConfXml = 
> System.getProperty("oozie.action.conf.xml");            
>         if (oozieActionConfXml != null) {
>             conf.addResource(new Path("file:///", oozieActionConfXml));
>         }
> As you can see, there's no adverse affects if not running in an Oozie 
> workflow. This code could be added to AbstractJob with minimal impact and 
> much benefit to those of us using Mahout in our Oozie workflows.

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