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From Rita Liu <crystaldol...@gmail.com>
Subject Re: Log4j Logger in MapReduce applications
Date Mon, 06 Sep 2010 05:59:42 GMT
Thanks so much for the kind reply! :) I looked at the web ui of jobtracker
(50030) but still couldn't find my logger messages. Could you please explain
a little more? Thanks a lot!
-Rita :)

On Sun, Sep 5, 2010 at 10:47 PM, Hemanth Yamijala <yhemanth@gmail.com>wrote:

> Hi,
>
> On Mon, Sep 6, 2010 at 9:49 AM, Rita Liu <crystaldoll06@gmail.com> wrote:
> > Hi! :)
> >
> > I add some Log4j loggers into the mapper, the reducer, and the main
> method
> > of WordCount.java. However, after I run this application on the cluster,
> I
> > couldn't find any of my log messages from WordCount in any of the hadoop
> log
> > files (JobTracker, TaskTracker, Namenode, Secondary Namenode, Datanode).
> How
> > may I see my logging messages from WordCount, or, any of the MapReduce
> > applications?
> >
>
> logger messages added to the mapper and reducers are added to user
> logs that are generated on the cluster where the tasks run. You can
> view them from the web ui of the jobtracker, if you navigate to the
> job, and then its tasks.
>
> Thanks
> Hemanth
>
> > If possible, please help me out? Thank you very much!!
> >
> > Best,
> > Rita :)
> >
>

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