Adding your jar files in the $HADOOP_HOME/lib folder works, but you would
have to restart all your tasktrackers to have your jar files loaded.
If you repackage your map-reduce jar file (e.g. hadoop-0.18.0-examples.jar)
with your jar file and run your job with the newly repackaged jar file, it
would work, too.
On Tue, Oct 7, 2008 at 6:55 AM, Tarandeep Singh <[EMAIL PROTECTED]> wrote:
> thanks Mahadev for the reply.
> So that means I have to copy my jar file in the $HADOOP_HOME/lib folder on
> all slave machines like before.
>
> One more question- I am adding a conf file (just like HADOOP_SITE.xml) via
> -conf option and I am able to query parameters in mapper/reducers. But is
> there a way I can query the parameters in my job driver class -
>
> public class jobDriver extends Configured
> {
> someMethod( )
> {
> ToolRunner.run( new MyJob( ), commandLineArgs);
> // I want to query parameters present in my conf file here
> }
> }
>
> public class MyJob extends Configured implements Tool
> {
> }
>
> Thanks,
> Taran
>
> On Mon, Oct 6, 2008 at 2:46 PM, Mahadev Konar <[EMAIL PROTECTED]>
> wrote:
>
> > HI Tarandeep,
> > the libjars options does not add the jar on the client side. Their is an
> > open jira for that ( id ont remember which one)...
> >
> > Oyu have to add the jar to the
> >
> > HADOOP_CLASSPATH on the client side so that it gets picked up on the
> client
> > side as well.
> >
> >
> > mahadev
> >
> >
> > On 10/6/08 2:30 PM, "Tarandeep Singh" <[EMAIL PROTECTED]> wrote:
> >
> > > Hi,
> > >
> > > I want to add a jar file (that is required by mappers and reducers) to
> > the
> > > classpath. Initially I had copied the jar file to all the slave nodes
> in
> > the
> > > $HADOOP_HOME/lib directory and it was working fine.
> > >
> > > However when I tried the libjars option to add jar files -
> > >
> > > $HADOOP_HOME/bin/hadoop jar myApp.jar -conf $MY_CONF_FILE -libjars
> > jdom.jar
> > >
> > >
> > > I got this error-
> > >
> > > java.lang.NoClassDefFoundError: org/jdom/input/SAXBuilder
> > >
> > > Can someone please tell me what needs to be fixed here ?
> > >
> > > Thanks,
> > > Taran
> >
> >
>
