Problem in executing "seq2sparse"

[Stuti Awasthi <st...@hcl.com>]

Hi All,

I was trying to run the seq2sparse example of Mahout but every time I get same error of ClassNotFound Exception. I have seen many people post on the same issue. Is this a specific problem with this example.
I have checked by printing the classpath from mahout script. Classpath contains all the jars present in $MAHOUT_HOME/lib which has lucene-core-3.6.0.jar in it. I have also checked that Analyzer class is present in lucene jar.

Command : $MAHOUT_HOME/bin/mahout seq2sparse -i /clustering/reuters-seqfiles -o /clustering/reuters-vectors -ow
Error:
Error: java.lang.ClassNotFoundException: org.apache.lucene.analysis.Analyzer
       at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
       at java.security.AccessController.doPrivileged(Native Method)
       at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
       at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
       at java.lang.ClassLoader.defineClass1(Native Method)
       at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
       at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
       at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
       at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
       at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
       at java.security.AccessController.doPrivileged(Native Method)
       at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
       at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
       at org.apache.mahout.vectorizer.document.SequenceFileTokenizerMapper.setup(SequenceFileTokenizerMapper.java:58)

Any Suggestions to rectify .

Thanks
Stuti


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