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Date: Thu, 03 Apr 2008 14:04:52 -0700
From: Jason Venner <jason@attributor.com>
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To: core-user@hadoop.apache.org
Subject: Re: Quick jar deployment question...
References: <C41A7011.3B965%tdunning@veoh.com>
In-Reply-To: <C41A7011.3B965%tdunning@veoh.com>
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This only happens if you add a class from the jar to the JobConf 
creation line.

      JobConf conf = new JobConf(MyClass.class);

JobConf

public JobConf(Class exampleClass)

    Construct a map/reduce job configuration.
  
    Parameters:
        exampleClass - a class whose containing jar is used as the job's 
jar.
  

Ted Dunning wrote:
> The easiest way is to package all of your code (classes and jars) into a
> single jar file which you then execute.  When you instantiate a JobClient
> and run a job, your jar gets copied to all necessary nodes.  The machine you
> use to launch the job need not even be in the cluster, just able to see the
> cluster.
>
>
> On 4/3/08 11:23 AM, "C G" <parallelguy@yahoo.com> wrote:
>
>   
>> Hi All:
>>    
>>   When deploying a jar file containing code for a Hadoop job, is it necessary
>> to copy the jar to the same path on all nodes in the grid, or just on the node
>> which will launch the job?
>>    
>>   Thanks,
>>   C G
>>    
>>
>>        
>> ---------------------------------
>> You rock. That's why Blockbuster's offering you one month of Blockbuster Total
>> Access, No Cost.
>>     
>
>   

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