First thing I would do is to run the job in the local jobrunner (as a single
process on your local machine without involving the cluster):
JobConf conf = .....
// set other params, mapper, etc. here
conf.set("mapred.job.tracker", "local"); // use localjobrunner
conf.set("fs.default.name", "file:///"); // read from local hard disk
instead of hdfs
JobClient.runJob(conf);
This will actually print stdout, stderr, etc. to your local terminal. Try
this on a single input file. This will let you confirm that it does, in
fact, write to stdout.
- Aaron
On Thu, Apr 30, 2009 at 9:00 AM, Asim <linka...@gmail.com> wrote:
> Hi,
>
> I am not able to see any job output in userlogs/<task_id>/stdout. It
> remains empty even though I have many println statements. Are there
> any steps to debug this problem?
>
> Regards,
> Asim
>
