Hi Utkarsh, The usage of the jar command is like this,
Usage: hadoop jar <jar> [mainClass] args... If you want the commons-math3.jar to be available for all the tasks you can do any one of these 1. Copy the jar file in $HADOOP_HOME/lib dir or 2. Use the generic option -libjars. Can you give the stack trace of your problem for which class it is giving ClassNotFoundException(i.e for main class or math lib class)? Thanks Devaraj ________________________________________ From: Utkarsh Gupta [[email protected]] Sent: Wednesday, April 04, 2012 12:22 PM To: [email protected] Subject: Including third party jar files in Map Reduce job Hi All, I am new to Hadoop and was trying to generate random numbers using apache commons math library. I used Netbeans to build the jar file and the manifest has path to commons-math jar as lib/commons-math3.jar I have placed this jar file in HADOOP_HOME/lib folder but still I am getting ClassNotFoundException. I tried using –libjar option with $HADOOP_HOME/bin/Hadoop jar myprg.jar <inputpath> <outputpath> –libjar <jarpath> And $HADOOP_HOME/bin/Hadoop jar myprg.jar –libjar <jarpath> <inputpath> <outputpath> But this is not working. Please help. Thanks and Regards Utkarsh Gupta **************** CAUTION - Disclaimer ***************** This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system. ***INFOSYS******** End of Disclaimer ********INFOSYS***
