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RE: understanding hadoop job submission
Hi Arindam,

    hadoop jar jarFileName MainClassName

The above command will not submit the job. This command only executes the jar file using the Main Class(Main-class present in manifest info if available otherwise class name(i.e MainClassName in the above command) passed as an argument. If we give any additional arguments in the command, those will be passed to the Main class args.

   We can have a job submission code in the Main Class or any of the classes in the jar file. You can take a look into WordCount example for job submission info.
Thanks
Devaraj

________________________________________
From: Arindam Choudhury [[EMAIL PROTECTED]]
Sent: Wednesday, April 25, 2012 2:14 PM
To: common-user
Subject: understanding hadoop job submission

Hi,

I am new to hadoop and I am trying to understand hadoop job submission.

We submit the job using:

hadoop jar some.jar name input output

this in turn invoke the RunJar . But in RunJar I can not find any
JobSubmit() or any call to JobClient.

Then, how the job gets submitted to the JobTracker?

-Arindam