Hello, What if each machine has the identical directory structure and Rserve.jar is present at the same place(i.e the entry in the classpath is identical across machines). The will the latter suggestion work?
On Thu, Dec 18, 2008 at 9:02 PM, Zheng Shao <zs...@facebook.com> wrote: > You either need to add the your Rserve.jar to -libjars, or put Rserve.jar in > a cluster-accessible NFS mount (and add it to CLASSPATH/HADOOP_CLASSPATH). > > Zheng > -----Original Message----- > From: Saptarshi Guha [mailto:saptarshi.g...@gmail.com] > Sent: Thursday, December 18, 2008 3:38 PM > To: core-user@hadoop.apache.org > Subject: Classes Not Found even when classpath is mentioned (Starting > mapreduce from another app) > > Hello, > I intend to start a mapreduce job from another java app, using > ToolRunner.run method. This works fine on a local job. However when > distributed i get java.lang.NoClassDefFoundError: > org/rosuda/REngine/Rserve/RserveException > at java.lang.Class.getDeclaredConstructors0(Native Method) > at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389) > at java.lang.Class.getConstructor0(Class.java:2699) > at java.lang.Class.getDeclaredConstructor(Class.java:1985) > at > org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:74) > at org.apache.hadoop.mapred.JobConf.getInputFormat(JobConf.java:402) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:219) > at > org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2207) > > Now, i have a CLASSPATH entry in my .bashrc which contains the > location of Rserve.jar (which contains the above classes), yet I still > get the above error. > Do I have to somehow emulate RunJar.main or is there a simpler way out? > Thank you > Saptarshi > > -- > Saptarshi Guha - saptarshi.g...@gmail.com > -- Saptarshi Guha - saptarshi.g...@gmail.com
