I think you've done the right thing. The project doesn't support Hadoop 2.x, and CDH = Hadoop 2.x.
On Wed, Jan 2, 2013 at 1:11 PM, Sloot, Hans-Peter <[email protected]> wrote: > Hello all, > > I have installed Clouder cdh4 and added the mahout rpm afterwards. > > When starting mahout I see the following output. > > MAHOUT_LOCAL is not set; adding HADOOP_CONF_DIR to classpath. > Running on hadoop, using /usr/lib/hadoop-0.20-mapreduce/bin/hadoop and > HADOOP_CONF_DIR=/etc/hadoop/conf > MAHOUT-JOB: /usr/lib/mahout/mahout-examples-0.6-cdh4.0.1-job.jar > Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/hadoop/util/PlatformName > Caused by: java.lang.ClassNotFoundException: > org.apache.hadoop.util.PlatformName > at java.net.URLClassLoader$1.run(URLClassLoader.java:202) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:190) > at java.lang.ClassLoader.loadClass(ClassLoader.java:306) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) > at java.lang.ClassLoader.loadClass(ClassLoader.java:247) > Could not find the main class: org.apache.hadoop.util.PlatformName. Program > will exit. > Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/hadoop/util/RunJar > Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.util.RunJar > at java.net.URLClassLoader$1.run(URLClassLoader.java:202) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:190) > at java.lang.ClassLoader.loadClass(ClassLoader.java:306) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) > at java.lang.ClassLoader.loadClass(ClassLoader.java:247) > Could not find the main class: org.apache.hadoop.util.RunJar. Program will > exit. > > Apparently the main issue is that mahout cannot find the classes PlatformName > and RunJar > > I looked around and found that these classes are in > /usr/lib/hadoop/hadoop-common-2.0.0-cdh4.0.1.jar > > Since /usr/bin/mahout is a shell script I added the jar to the > HADOOP_CLASSPATH variable in it. > export > HADOOP_CLASSPATH="/usr/lib/mahout/mahout-examples-*-job.jar":/usr/lib/hadoop/hadoop-common-2.0.0-cdh4.0.1.jar:$HADOOP_CLASSPATH > > Is there a ‘official’ way to get the configuration right? > > When starting it without any parameters it now shows: > [nl19856@nlvora150 ~]$ mahout > MAHOUT_LOCAL is not set; adding HADOOP_CONF_DIR to classpath. > Running on hadoop, using /usr/lib/hadoop-0.20-mapreduce/bin/hadoop and > HADOOP_CONF_DIR=/etc/hadoop/conf > MAHOUT-JOB: /usr/lib/mahout/mahout-examples-0.6-cdh4.0.1-job.jar > SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". > SLF4J: Defaulting to no-operation (NOP) logger implementation > SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further > details. > An example program must be given as the first argument. > Valid program names are: > arff.vector: : Generate Vectors from an ARFF file or directory > baumwelch: : Baum-Welch algorithm for unsupervised HMM training > canopy: : Canopy clustering > cat: : Print a file or resource as the logistic regression models would see > it > .. etc.. > vectordump: : Dump vectors from a sequence file to text > viterbi: : Viterbi decoding of hidden states from given output states > sequence > wikipediaDataSetCreator: : Splits data set of wikipedia wrt feature like > country > wikipediaXMLSplitter: : Reads wikipedia data and creates ch > Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 > at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:119) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at org.apache.hadoop.util.RunJar.main(RunJar.java:208) > > Do I need to change the configuration for this too? > > Regards Hans-Peter > > > > > > > > Dit bericht is vertrouwelijk en kan geheime informatie bevatten enkel bestemd > voor de geadresseerde. 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