On 1/6/10 4:53 PM, "psdc1978" wrote:
See my question inline.
Are these values enough to not run the reduce tasks? I don't think so,
because I've also searched "/tmp/hadoop-pcosta/" directory that to
find the output of the map, but I can't find them. Are this output
written in binary?
The
Setting mapred.reduce.tasks to zero is enough. You need not modify other
configurations.
Also, you need not modify the values in mapred-default.xml, you can have a
mapred-site.xml with :
mapred.reduce.tasks
0
The default number of reduce tasks per job. Typically set to 99%
of the cluster
See my question inline.
On Tue, Jan 5, 2010 at 6:32 PM, Owen O'Malley wrote:
>
> On Jan 5, 2010, at 9:13 AM, psdc1978 wrote:
>
>> 1 - I would like to see what is output that the Maps is doing on my
>> example. Is it possible to put hadoop only running Map tasks,
>> excluding the Reduce tasks?
>
>
