Hi, I would try this:
export CLASSPATH=$(hadoop classpath) Brock On Mon, Apr 30, 2012 at 10:15 AM, Ryan Cole <r...@rycole.com> wrote: > Hello, > > I'm trying to run an application, written in C++, that uses libhdfs. I have > compiled the code and get an error when I attempt to run the application. > The error that I am getting is as follows: "Can't construct instance of > class org.apache.hadoop.conf.Configuration". > > Initially, I was receiving an error saying that CLASSPATH was not set. That > was easy, so I set CLASSPATH to include the following three directories, in > this order: > > > 1. $HADOOP_HOME > 2. $HADOOP_HOME/lib > 3. $HADOOP_HOME/conf > > The CLASSPATH not set error went away, and now I receive the error about > the Configuration class. I'm assuming that I do not have something on the > path that I need to, but everything I have read says to simply include > these three directories. > > Does anybody have any idea what I might be missing? Full exception pasted > below. > > Thanks, > Ryan > > Exception in thread "main" java.lang.NoClassDefFoundError: >> org/apache/hadoop/conf/Configuration >> Caused by: java.lang.ClassNotFoundException: >> org.apache.hadoop.conf.Configuration >> at java.net.URLClassLoader$1.run(URLClassLoader.java:366) >> at java.net.URLClassLoader$1.run(URLClassLoader.java:355) >> at java.security.AccessController.doPrivileged(Native Method) >> at java.net.URLClassLoader.findClass(URLClassLoader.java:354) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:423) >> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:356) >> Can't construct instance of class org.apache.hadoop.conf.Configuration >> node: /home/ryan/.node-gyp/0.7.8/src/node_object_wrap.h:61: void >> node::ObjectWrap::Wrap(v8::Handle<v8::Object>): Assertion >> `handle_.IsEmpty()' failed. >> Aborted (core dumped) -- Apache MRUnit - Unit testing MapReduce - http://incubator.apache.org/mrunit/
