On Fri, Jul 1, 2011 at 1:03 PM, <praveen.pe...@nokia.com> wrote:
> Hi all,
>
> I am using hadoop 0.20.2. I am setting the property
> mapred.tasktracker.map.tasks.maximum = 4 (same for reduce also) on my job
> conf but I am still seeing max of only 2 map and reduce tasks on each node.
> I know my machine can run 4 maps and 4 reduce tasks in parallel. Is this a
> bug in 0.20.2 or am I doing something wrong?
>
>
If I remember correctly, you have to set this in your hadoop-site.xml
and restart your job tracker and task trackers.
>
> Configuration conf = new Configuration();
>
> conf.set("mapred.tasktracker.map.tasks.maximum", "4");
>
> conf.set("mapred.tasktracker.reduce.tasks.maximum", "4");
>
>
>
> Thanks
>
> Praveen
