[
https://issues.apache.org/jira/browse/MAHOUT-784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13206349#comment-13206349
]
Lance Norskog commented on MAHOUT-784:
--------------------------------------
I'm sure there are a lot of diffs. My general practice is to remove those from
the patch by hand and only include the part that does real code. This makes it
much easier for someone else to review it. Some committers always rewrite it
anyway, so this must makes it easier. Also, every code change can break other
uncommitted patches in the same file.
This is my patch-generating script. It makes 5 surrounding lines, ignores
white-space and doesn't make those a/ and b/ paths.
{code}
git diff -w -U5 --no-prefix trunk "$@"
{code}
Open Source develops by nibbling at the edges :)
> Exception at 20 Newsgroups examples
> -----------------------------------
>
> Key: MAHOUT-784
> URL: https://issues.apache.org/jira/browse/MAHOUT-784
> Project: Mahout
> Issue Type: Bug
> Components: Classification
> Environment: Ubuntu 11.04 / Hadoop 0.20.2 / Maven 3.0.3 /
> mahout-distribution-0.5
> Reporter: patrick.J
> Assignee: Sean Owen
> Fix For: 0.7
>
> Attachments: MAHOUT-784-unformatted.patch, MAHOUT-784.patch,
> MAHOUT-784.patch
>
>
> somebody may help,
> I run"Twenty Newsgroups Classification Example"(from
> https://cwiki.apache.org/confluence/display/MAHOUT/Twenty+Newsgroups) step by
> step.And the Environment variables(HADOOP_HOME,MAHOUT_HOME,HADOOP_CONF_DIR)
> all set in ~/.bashrc.
> But when I going the step train the classifier on Hadoop, Exception was
> cast like:
> $> $MAHOUT_HOME/bin/mahout trainclassifier -i
> 20news-input/bayes-train-input -o newsmodel -type bayes -ng 3 -source
> hdfs:
> 11/08/13 09:37:54 INFO mapred.JobClient: map 0% reduce 0%
> 11/08/13 09:38:04 INFO mapred.JobClient: Task Id :
> attempt_201108130934_0001_m_000000_0, Status : FAILED
> java.lang.RuntimeException: Error in configuring object
> at
> org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)
> at
> org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)
> at
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:354)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
> at org.apache.hadoop.mapred.Child.main(Child.java:170)
> Caused by: java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88)
> ... 5 more
> Caused by: java.lang.NoClassDefFoundError:
> org/apache/lucene/analysis/TokenStream
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:247)
> at
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:762)
> at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:807)
> at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:833)
> at org.apache.hadoop.mapred.JobConf.getMapperClass(JobConf.java:772)
> at org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34)
> ... 10 more
> Caused by: java.lang.ClassNotFoundException:
> org.apache.lucene.analysis.TokenStream
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> ... 17 more
> What happened? I just walked through the tutorials.......
>
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
