Dear Yin, Good point: I can try to install 0.19 and reproduce the problem. I'll let you know ASAP.
Thanks, DF ________________________________ From: Yin Lou <yin.lou...@gmail.com> To: mapreduce-user@hadoop.apache.org Sent: Fri, April 29, 2011 5:59:14 PM Subject: Re: Hadoop Mapreduce jobs and LD_LIBRARY_PATH Just curious, can we do this in 0.19? Thanks, Yin On Fri, Apr 29, 2011 at 10:29 AM, Robert Evans <ev...@yahoo-inc.com> wrote: DF, > >You can set mapred.child.java.opts to set java options, but you can also set >mapred.child.env to set environment variables, be careful because they are >space >separated with an = in between them. > > <property> > > <name>mapred.child.env</name> >> >> <value>LD_LIBRARY_PATH=/home/mylibpath1/lib1;home/mylibpath2/lib2;home/mylibpath3/lib3</value> >> >> </property> --Bobby On 4/29/11 5:58 AM, "Donatella Firmani" <donatellafirm...@yahoo.com> wrote: To solve the issue addressed in my previous message, i tried setting property >mapred.child.java.opts in mapred-site.xml. But - even if it seems the right >approach in relation to what said in blogs & forums - there is a big problem >with it. > >Following the tutorial (hadoop website) as section Task Execution & Environment, > >my xml looks like: > ><configuration> > <property> > <name>mapred.job.tracker</name> > <value>localhost:9001</value> > </property> > <property> > <name>mapred.child.java.opts</name> > <value> >-Djava.library.path=/home/mylibpath1/lib1;home/mylibpath2/lib2;home/mylibpath3/lib3 > > > > </value> > </property> ></configuration> > >The problem arises when executing the job, because it is thrown an exception: > >Exception in thread "main" java.lang.NoClassDefFoundError: >-Djava/library/path=/home/mylibpath1/lib1;home/mylibpath2/lib2;home/mylibpath3/lib3 > > > > >Any help would be appreciated. >Thanks in advance, > >DF > > > >----- Original Message ---- >From: Donatella Firmani <donatellafirm...@yahoo.com> >To: mapreduce-user@hadoop.apache.org >Sent: Fri, April 29, 2011 12:57:52 PM >Subject: Hadoop Mapreduce jobs and LD_LIBRARY_PATH > > > >Hi to all, > >I just subscribed to this mailing list and I'd like to ask you if anyone knows >how to deal with LD_LIBRARY_PATH. >I have a Java application that needs a proper setting of this environment >variable to work under Linux-Ubuntu. >I want to use tis application from a mapreduce job, unfortunately I could not >find a way to make things work against the LD_LIBRARY_PATH environment variable. > >I tried so many different strategies and I am stuck. Maybe someone of you can >help. > >Thanks in advance, >Cheers. > >DF > >PS: I use hadoop-0-20-2 > >
