[
https://issues.apache.org/jira/browse/MAHOUT-450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12892855#action_12892855
]
Sebastian Schelter commented on MAHOUT-450:
-------------------------------------------
from a first look I'd say that org.apache.commons.cli2.OptionException from
commons cli cannot be loaded, are you sure that your jar-file is correctly
built?
> RowSimilarityJob error
> -----------------------
>
> Key: MAHOUT-450
> URL: https://issues.apache.org/jira/browse/MAHOUT-450
> Project: Mahout
> Issue Type: Test
> Components: Collaborative Filtering
> Affects Versions: 0.4
> Reporter: Hui Wen Han
> Fix For: 0.4
>
>
> when ran RowSimilarityJob job as following:
> hadoop jar ../../singlejar/prefetch-hadoop-1.0-full.jar
> org.apache.mahout.math.hadoop.similarity.RowSimilarityJob --input
> /steer/item/tap/temp/maybePruneItemUserMatrixPath --output
> /steer/item/tap/temp/similarityMatrix -s SIMILARITY_COOCCURRENCE -r 10000 -m
> 100
> got following error:
> Error: java.lang.ClassNotFoundException:
> org.apache.commons.cli2.OptionException
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
> at
> org.apache.mahout.math.hadoop.similarity.RowSimilarityJob$SimilarityReducer.setup(RowSimilarityJob.java:284)
> at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:174)
> at
> org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:566)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:408)
> at org.apache.hadoop.mapred.Child.main(Child.java:170)
> 10/07/27 12:14:31 INFO mapred.JobClient: Task Id :
> attempt_201007261131_0026_r_000000_1, Status : FAILED
> Error: java.lang.ClassNotFoundException:
> org.apache.commons.cli2.OptionException
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
> at
> org.apache.mahout.math.hadoop.similarity.RowSimilarityJob$SimilarityReducer.setup(RowSimilarityJob.java:284)
> at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:174)
> at
> org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:566)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:408)
> at org.apache.hadoop.mapred.Child.main(Child.java:170)
> 10/07/27 12:14:44 INFO mapred.JobClient: Task Id :
> attempt_201007261131_0026_r_000000_2, Status : FAILED
> Error: java.lang.ClassNotFoundException:
> org.apache.commons.cli2.OptionException
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
> at
> org.apache.mahout.math.hadoop.similarity.RowSimilarityJob$SimilarityReducer.setup(RowSimilarityJob.java:284)
> at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:174)
> at
> org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:566)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:408)
> at org.apache.hadoop.mapred.Child.main(Child.java:170)
> It seemed that here error:
> public static class SimilarityReducer
> extends Reducer<WeightedRowPair,Cooccurrence,SimilarityMatrixEntryKey,
> MatrixEntryWritable> {
> private DistributedVectorSimilarity similarity;
> private int numberOfColumns;
> @Override
> protected void setup(Context ctx) throws IOException,
> InterruptedException {
> super.setup(ctx);
> similarity =
> instantiateSimilarity(ctx.getConfiguration().get(DISTRIBUTED_SIMILARITY_CLASSNAME));
> //this line,seems can not load the class.
> numberOfColumns = ctx.getConfiguration().getInt(NUMBER_OF_COLUMNS, -1);
> if (numberOfColumns < 1) {
> throw new IllegalStateException("Number of columns was not correctly
> set!");
> }
> }
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
