I compiled using javac: javac -classpath :/usr/local/hadoop/hadoop-core-0.20.203.0.jar:/usr/local/hadoop/lib/commons-cli-1.2.jar:/usr/local/mahout/math/target/mahout-math-0.6-SNAPSHOT.jar -d makevector_classes/ MakeVector.java;
If I don't include the mahout-math jar, it gives me a compile error because of DenseVector. On Jan 30, 2012, at 10:42 PM, Prashant Kommireddi wrote: > How are you building the mapreduce jar? Try not to include the Mahout dist > while building MR jar, and include it only on "-libjars" option. > > On Mon, Jan 30, 2012 at 10:33 PM, Daniel Quach <danqu...@cs.ucla.edu> wrote: > >> I have been compiling my mapreduce with the jars in the classpath, and I >> believe I need to also add the jars as an option to -libjars to hadoop. >> However, even when I do this, I still get an error complaining about >> missing classes at runtime. (Compilation works fine). >> >> Here is my command: >> hadoop jar makevector.jar org.myorg.MakeVector -libjars >> /usr/local/mahout/math/target/mahout-math-0.6-SNAPSHOT.jar input/ output/ >> >> This is the error I receive: >> Exception in thread "main" java.lang.NoClassDefFoundError: >> org/apache/mahout/math/DenseVector >> >> I wonder if I am using the GenericOptionsParser incorrectly? I'm not sure >> if there is a deeper problem here. >>
