Yes, you need to manually set it. Please see the API at http://hadoop.apache.org/docs/stable2/api/org/apache/hadoop/mapred/JobConf.html#setNumReduceTasks(int)
On Thu, Jan 16, 2014 at 12:45 PM, Ashish Jain <[email protected]> wrote: > Dear All, > > I have a 3 node cluster and have a map reduce job running on it. I have 8 > data blocks spread across all the 3 nodes. While running map reduce job I > could see 8 map tasks running however reduce job is only 1. Is there a way > to configure multiple reduce jobs? > > --Ashish -- Harsh J
