Yes, the job is submitted by the api calls in map reduce code On Wed, Apr 25, 2012 at 3:56 AM, Devaraj k <devara...@huawei.com> wrote:
> 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 [arindamchoudhu...@gmail.com] > 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 > -- Jay Vyas MMSB/UCHC
