Ensure you have a Job/JobConf.setJar (or setJarByClass) call in your Driver, before launching the job.
On Tue, Apr 17, 2012 at 6:26 AM, Ranjan Banerjee <rbanerj...@wisc.edu> wrote: > Hello, > I am running the default map reduce job (word count) in Hadoop. The job > runs fine and I am able to delve into the statistics. However I get a warning > as follows > "No job jar file set. User classes may not be found. See JobConf(Class) or > JobConf#setJar(String)." > Also I set the following parameter in the core-site.xml > > > <property> > <name>mapred.map.tasks</name> > <value>2</value> > <description>The default number of map tasks per job. Typically set > to a prime several times greater than number of available hosts. > Ignored when mapred.job.tracker is "local". > </description> > </property> > However I still get only one map task and not two. Can someone suggest the > solution to this problem. > > Thanking you > > Yours faithfully > Ranjan Banerjee -- Harsh J
