ClassNotFound Exception when running SequenceFilesFromDirectory

Hi All,

I am trying to run LDA from Mahout and as a first step I wanted to run the
"SequenceFilesFromDirectory" job to convert the text files into sequence
files. Following is the command I am using:

hadoop jar
/Users/rohitp/Desktop/rohitp/Downloads/mahout-distribution-0.9/mahout-examples-0.9-job.jar
org.apache.mahout.text.SequenceFilesFromDirectory -i
LDA/reuter_example/reuters-sgm/ -o LDA/reuter_example/reuters-sgm_seq/

However, I get the following class not found exception. I also tried to use
the mahout driver program but got the same exception (mahout seqdirectory
-i LDA/reuter_example/reuters-sgm/ -o LDA/reuter_example/reuters-sgm_seq/).

Hadoop Version: Hadoop 1.2.1

Mahout version: 0.9

Any help is much appreciated.

Rohit

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

at
org.apache.hadoop.mapreduce.lib.input.CombineFileRecordReader.initNextRecordReader(CombineFileRecordReader.java:164)

at
org.apache.hadoop.mapreduce.lib.input.CombineFileRecordReader.<init>(CombineFileRecordReader.java:126)

at
org.apache.mahout.text.MultipleTextFileInputFormat.createRecordReader(MultipleTextFileInputFormat.java:43)

at
org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.<init>(MapTask.java:488)

at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:731)

at org.apache.hadoop.mapred.MapTask.run(MapTask.java:364)

at org.apache.hadoop.mapred.Child$4.run(Child.java:255)

at java.security.AccessController.doPrivileged(Native Method)

at javax.security.auth.Subject.doAs(Subject.java:394)

at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)

at org.apache.hadoop.mapred.Child.main(Child.java:249)

Caused by: java.lang.reflect.InvocationTargetException

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)

at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

at java.lang.reflect.Constructor.newInstance(Constructor.java:513)

at
org.apache.hadoop.mapreduce.lib.input.CombineFileRecordReader.initNextRecordReader(CombineFileRecordReader.java:155)

... 10 more

Caused by: java.lang.NoClassDefFoundError:
org/apache/mahout/common/AbstractJob

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)

at java.lang.ClassLoader.defineClass(ClassLoader.java:621)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

at java.net.URLClassLoader.access$000(URLClassLoader.java:58)

at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

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)

at
org.apache.mahout.text.WholeFileRecordReader.<init>(WholeFileRecordReader.java:61)

... 15 more