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From deneche abdelhakim <a_dene...@yahoo.fr>
Subject Re: class not found bug ?
Date Tue, 18 Aug 2009 17:28:53 GMT
> Try 0.20.0.  Also, you may need to flatten the JOB jar
> into a single jar.

My example and Kmeans example Don't work on 0.20.0 without actually flattening the JOB jar.
But as I wrote in my last post, there may be a simpler solution: modifying "maven/build.xml"
seems to solve the problem, at least for my examples and kmeans:

Index: maven/build.xml
===================================================================
--- maven/build.xml    (revision 804891)
+++ maven/build.xml    (working copy)
@@ -45,9 +45,9 @@
                   includes="**/*.jar"/>
       <zipfileset dir="${core-lib}" prefix="lib"
                   includes="**/*.jar" excludes="hadoop-*.jar"/>
-      <zipfileset dir="../core/target/" prefix="lib" includes="apache-mahout-core-${version}.jar"/>
+      <zipfileset dir="../core/target/classes"/>
       <zipfileset dir="${dest}/dependency" prefix="lib"
-                  includes="**/*.jar"/>
+                  includes="**/*.jar" excludes="apache-mahout-core-${version}..jar"/>
       <zipfileset dir="../core/target/dependency" prefix="lib"
                   includes="**/*.jar"/>
     </jar>


--- En date de : Lun 17.8.09, Grant Ingersoll <gsingers@apache.org> a écrit :

> De: Grant Ingersoll <gsingers@apache.org>
> Objet: Re: class not found bug ?
> À: mahout-dev@lucene.apache.org
> Date: Lundi 17 Août 2009, 14h46
> 
> On Aug 17, 2009, at 7:36 AM, deneche abdelhakim wrote:
> 
> > I moved recently some of the "Decision Forest"
> examples from the core project to the examples project.
> While in core they worked perfectly in hadoop 0..19.1
> (pseudo-distributed), but now they don't !!!
> 
> Try 0.20.0.  Also, you may need to flatten the JOB jar
> into a single jar.
> 
> 
> > 
> > For example, running my
> org.apache.mahout.df.BuildForest gives the following
> exception:
> > 
> > ....
> > 09/08/17 12:02:36 INFO mapred.JobClient: Running job:
> job_200908171136_0020
> > 09/08/17 12:02:37 INFO mapred.JobClient:  map 0%
> reduce 0%
> > 09/08/17 12:02:43 INFO mapred.JobClient: Task Id :
> attempt_200908171136_0020_m_000000_0, Status : FAILED
> > java.lang.NoClassDefFoundError:
> com/thoughtworks/xstream/XStream
> >     at
> org.apache.mahout.utils.StringUtils.<clinit>(StringUtils.java:28)
> >     at
> org.apache.mahout.df.mapred.Builder.getTreeBuilder(Builder.java:117)
> >     at
> org.apache.mahout.df.mapred.MapredMapper.configure(MapredMapper.java:74)
> >     at
> org.apache.mahout.df.mapred.partial.Step1Mapper.configure(Step1Mapper.java:75)
> >     at
> org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58)
> >     at
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:83)
> > ...
> > 
> > 
> > So I tried instead to run one of mahout's : following
> the wiki, kmeans gives me the following error:
> > 
> > ...
> > 09/08/17 11:59:27 INFO kmeans.KMeansDriver: Iteration
> 4
> > ...
> > 09/08/17 11:59:43 INFO kmeans.KMeansDriver:
> Clustering
> > 09/08/17 11:59:43 INFO kmeans.KMeansDriver: Running
> Clustering
> > 09/08/17 11:59:43 INFO kmeans.KMeansDriver: Input:
> output/data Clusters In: output/clusters-4 Out:
> output/points Distance:
> org.apache.mahout.utils.EuclideanDistanceMeasure
> > 09/08/17 11:59:43 INFO kmeans.KMeansDriver:
> convergence: 0.5 Input Vectors:
> org.apache.mahout.matrix.SparseVector
> > 09/08/17 11:59:43 WARN mapred.JobClient: Use
> GenericOptionsParser for parsing the arguments. Applications
> should implement Tool for the same.
> > 09/08/17 11:59:43 INFO mapred..FileInputFormat: Total
> input paths to process : 2
> > 09/08/17 11:59:43 INFO mapred.JobClient: Running job:
> job_200908171136_0019
> > 09/08/17 11:59:44 INFO mapred.JobClient:  map 0%
> reduce 0%
> > 09/08/17 11:59:54 INFO mapred.JobClient: Task Id :
> attempt_200908171136_0019_m_000000_0, Status : FAILED
> > java.lang.NoClassDefFoundError:
> com/google/gson/reflect/TypeToken
> >     at
> java.lang.ClassLoader.defineClass1(Native Method)
> >     at
> java.lang.ClassLoader.defineClass(ClassLoader.java:637)
> >     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$1.run(URLClassLoader.java:212)
> >     at
> java.security.AccessController.doPrivileged(Native Method)
> > ...
> > 
> > The problem seems related to the fact that
> mahout-core.jar is being packed inside examples.jar. So I
> modified maven/build.xml to pack the core classes instead
> (because they are available):
> > 
> > Index: maven/build.xml
> >
> ===================================================================
> > --- maven/build.xml    (revision
> 804891)
> > +++ maven/build.xml    (working copy)
> > @@ -45,9 +45,9 @@
> >               
>    includes="**/*.jar"/>
> >       <zipfileset
> dir="${core-lib}" prefix="lib"
> >               
>    includes="**/*.jar"
> excludes="hadoop-*.jar"/>
> > -      <zipfileset
> dir="../core/target/" prefix="lib"
> includes="apache-mahout-core-${version}.jar"/>
> > +      <zipfileset
> dir="../core/target/classes"/>
> >       <zipfileset
> dir="${dest}/dependency" prefix="lib"
> > -             
>     includes="**/*.jar"/>
> > +             
>     includes="**/*.jar"
> excludes="apache-mahout-core-${version}.jar"/>
> >       <zipfileset
> dir="../core/target/dependency" prefix="lib"
> >               
>    includes="**/*.jar"/>
> >     </jar>
> > 
> > This seems to solve the problem, but I didn't try it
> on all examples
> > 
> > __________________________________________________
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> > 
> 
> --------------------------
> Grant Ingersoll
> http://www.lucidimagination.com/
> 
> Search the Lucene ecosystem
> (Lucene/Solr/Nutch/Mahout/Tika/Droids) using Solr/Lucene:
> http://www.lucidimagination.com/search
> 
> 

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