How to pass a parameter to map ?

[Alessandro Binhara <bi...@gmail.com>]

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>
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I need select a data on map...
I can pass paramenter to map when i configure a job?

Other questions :
I need sort a data and save in many files. the name of file is a sort Key
..???

thanks ..

Re: How to pass a parameter to map ?

[Marcos Ortiz <ml...@uci.cu>]

On Thu, 2011-03-17 at 13:57 -0700, Ted Yu wrote: 
> >> I can pass paramenter to map when i configure a job?
> You can utilize hadoop Configuration (JobConf).
> 
> On Thu, Mar 17, 2011 at 1:15 PM, Alessandro Binhara <bi...@gmail.com>wrote:
> 
> > >
> > >
> > >
> > I need select a data on map...
> > I can pass paramenter to map when i configure a job?
> >
> > Other questions :
> > I need sort a data and save in many files. the name of file is a sort Key
> > ..???
> >
> > thanks ..
> >
Take a deep look to JobConf object because there are many tuneable
parameters divided by sections:
- HDFS Writing
- Job submission
- Per-Job
- Map task Sumission and Execution
etc

Regards 
-- 
 Marcos Luís Ortíz Valmaseda
 Software Engineer
 Centro de Tecnologías de Gestión de Datos (DATEC)
 Universidad de las Ciencias Informáticas
 http://uncubanitolinuxero.blogspot.com
 http://www.linkedin.com/in/marcosluis2186

Re: How to pass a parameter to map ?

[Ted Yu <yu...@gmail.com>]

>> I can pass paramenter to map when i configure a job?
You can utilize hadoop Configuration (JobConf).

On Thu, Mar 17, 2011 at 1:15 PM, Alessandro Binhara <bi...@gmail.com>wrote:

> >
> >
> >
> I need select a data on map...
> I can pass paramenter to map when i configure a job?
>
> Other questions :
> I need sort a data and save in many files. the name of file is a sort Key
> ..???
>
> thanks ..
>