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From Terry Blankers <te...@amritanet.com>
Subject Re: SparseVectorsFromSequenceFiles StandardAnalyzer ClassNotFoundException issue
Date Tue, 03 Jun 2014 21:35:42 GMT
Thanks Suneel. I thought having the jar as a dependency and the class 
imported was enough.


On 6/3/14, 4:18 PM, Suneel Marthi wrote:
> You r missing the Lucene jars from ur classpath. Mahout's presently at Lucene 4.6.1 that's
what u should be including.
>
>
>
> On Tuesday, June 3, 2014 3:40 PM, Terry Blankers <terry@amritanet.com> wrote:
>   
>
>
> Hello, can anyone please give me a clue as to what I may be missing here?
>
> I'm trying to run a SparseVectorsFromSequenceFiles job via ToolRunner
> from a java project and I'm getting the following exception:
>
> Error: java.lang.ClassNotFoundException:
> org.apache.lucene.analysis.standard.StandardAnalyzer
>       at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
>       at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
>       at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
>       at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
>       at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
>       at
> org.apache.mahout.vectorizer.document.SequenceFileTokenizerMapper.setup(SequenceFileTokenizerMapper.java:62)
>       at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:142)
>       at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
>       at org.apache.hadoop.mapred.MapTask.run(MapTask.java:339)
>       at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at javax.security.auth.Subject.doAs(Subject.java:415)
>       at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
>       at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:157)
>
>
> I've tried adding the location of lucene-analyzers-common-4.6.1.jar to
> my hadoop classpath which doesn't make any difference.
>
>
> I'm running against Hadoop 2.2 and Mahout trunk, compiled with:
>
>       mvn clean install  -Dhadoop2.version=2.2.0 -DskipTests
>
>
> I'm trying to run the job like this:
>
>       String[] args = {"--input","/input/index"
>               ,"--output","/output/vectors"
>               ,"--maxNGramSize","3"
>               ,"--namedVector", "--overwrite"
>       };
>       SparseVectorsFromSequenceFiles sparse = new
> SparseVectorsFromSequenceFiles();
>       ToolRunner.run(configuration, sparse, args);
>
>
> Running seq2sparse from the commandline works successfully with no
> exceptions:
>
>       $MAHOUT_HOME/bin/mahout seq2sparse -i /input/index --namedVector -o
> /output/vectors -ow --maxNGramSize 3
>
>
> Many thanks,
>
> Terry


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