Hi,

Is there a way to change the number of reduce tasks? Without using Job
object to call the set function.Since it does not work. I need to keep
track of the number of mappers per reducer for experimentation purposes. So
how do i go about it ?

Thank you in advance
Regards,
Preethi

Hello Preethi,

You can do it through the shell at the time of job submission.
-D mapred.reduce.tasks=desired_no_reduce_tasks.

Alternatively, you can do that  through the mapred-site.xml.

Warm Regards,
Tariq
https://mtariq.jux.com/
cloudfront.blogspot.com
On Tue, Mar 12, 2013 at 4:10 PM, preethi ganeshan <
[EMAIL PROTECTED]> wrote:

> Hi,
>
> Is there a way to change the number of reduce tasks? Without using Job
> object to call the set function.Since it does not work. I need to keep
> track of the number of mappers per reducer for experimentation purposes. So
> how do i go about it ?
>
> Thank you in advance
> Regards,
> Preethi
>