Hi Harsh, Could you show one sample of how to do this ? I have not seen/written any mapper code where people use log4j logger or log4j file to set the log level.
Thanks in advance -JJ On Thu, May 3, 2012 at 4:32 PM, Harsh J <ha...@cloudera.com> wrote: > Doing (ii) would be an isolated app-level config and wouldn't get > affected by the toggling of > (i). The feature from (i) is available already in CDH 4.0.0-b2 btw. > > On Fri, May 4, 2012 at 4:58 AM, Mapred Learn <mapred.le...@gmail.com> > wrote: > > Hi Harsh, > > > > Does doing (ii) mess up with hadoop (i) level ? > > > > Or does it happen in both the options anyways ? > > > > > > Thanks, > > -JJ > > > > On Fri, Apr 20, 2012 at 8:28 AM, Harsh J <ha...@cloudera.com> wrote: > > > >> Yes this is possible, and there's two ways to do this. > >> > >> 1. Use a distro/release that carries the > >> https://issues.apache.org/jira/browse/MAPREDUCE-336 fix. This will let > >> you avoid work (see 2, which is same as your idea) > >> > >> 2. Configure your implementation's logger object's level in the > >> setup/setConf methods of the task, by looking at some conf prop to > >> decide the level. This will work just as well - and will also avoid > >> changing Hadoop's own Child log levels, unlike the (1) method. > >> > >> On Fri, Apr 20, 2012 at 8:47 PM, Mapred Learn <mapred.le...@gmail.com> > >> wrote: > >> > Hi, > >> > I m trying to find out best way to add debugging in map- red code. > >> > I have System.out.println() statements that I keep on commenting and > >> uncommenting so as not to increase stdout size > >> > > >> > But problem is anytime I need debug, I Hv to re-compile. > >> > > >> > If there a way, I can define log levels using log4j in map-red code > and > >> define log level as conf option ? > >> > > >> > Thanks, > >> > JJ > >> > > >> > Sent from my iPhone > >> > >> > >> > >> -- > >> Harsh J > >> > > > > -- > Harsh J >
