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From 戴清灏 <rogerda...@gmail.com>
Subject Re: Mahout project running in eclipse
Date Fri, 19 Aug 2011 08:28:01 GMT
yes, of course. It's a package tool.

在 2011年8月19日 下午4:26,张玉东 <zhangyudong@vancl.cn>写道:

> Can maven build my own projects developed based on mahout?
>
> -----邮件原件-----
> 发件人: 戴清灏 [mailto:rogerdai16@gmail.com]
> 发送时间: 2011年8月19日 16:16
> 收件人: user@mahout.apache.org
> 主题: Re: Mahout project running in eclipse
>
> This plugin is not that good. I mean "run on hadoop".
> So, I do not recommend you to use this.
> You can use maven to package mahout: mvn -Dskiptests=true clean package
> And run is on hadoop: hadoop jar mahout-*-job.jar xxx.xxx.xx.xx
> comand line would more convenient.
>
> 在 2011年8月19日 下午4:03,张玉东 <zhangyudong@vancl.cn>写道:
>
> > It is ok to run the mahout in the command line. I do not know whether
> > mahout supports the manner of "run on hadoop" in eclipse. Apparently,
> some
> > basic classes are not transported to the datanodes.
> >
> > -----邮件原件-----
> > 发件人: 戴清灏 [mailto:rogerdai16@gmail.com]
> > 发送时间: 2011年8月19日 15:58
> > 收件人: user@mahout.apache.org
> > 主题: Re: Mahout project running in eclipse
> >
> > Try to run mahout-*-job.jar, not any other jar.
> > Is your mahout version 0.5?
> >
> > 在 2011年8月19日 下午3:44,张玉东 <zhangyudong@vancl.cn>写道:
> >
> > > Dear Mahouters,
> > > I am a newer in Mahout. I try to setup Mahout in Eclipse running on
> > Windows
> > > and execute it on the remote Linux Based Hadoop cluster. However, when
> I
> > > test the KMeans example, it offers two options: sequential and MR, the
> > > former one can be executed exactly, but when it is expected to operate
> on
> > > the cluster by MapReduce, the following error appears, has any one met
> > the
> > > similar problem? Or, it can not be operated in this manner? Thanks.
> > >
> > > Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
> > >    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)
> > >    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.io.WritableName.getClass(WritableName.java:71)
> > >    at
> > >
> >
> org.apache.hadoop.io.SequenceFile$Reader.getValueClass(SequenceFile.java:1613)
> > >    at
> > org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1555)
> > >    at
> > > org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1428)
> > >    at
> > > org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1417)
> > >    at
> > > org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1412)
> > >    at
> > >
> >
> org.apache.hadoop.mapreduce.lib.input.SequenceFileRecordReader.initialize(SequenceFileRecordReader.java:50)
> > >    at
> > >
> >
> org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:418)
> > >    at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:620)
> > >    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305)
> > >    at org.apache.hadoop.mapred.Child.main(Child.java:170)
> > >
> > > Yudong
> > >
> > >
> >
>

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