Hi,

I have a small snippet of code which gives me error. Points written in
the input directory are of the type VectorWritable (value), key being
LongWritable. Clusters written to part-00000 file are of the type
Kluster (value), key being Text. Both these files are of SequenceFile
format.

Code snippet:

KMeansDriver.run(conf, new Path("input/points"), new
Path("input/part-00000"),
                 new Path("output"), new EuclideanDistanceMeasure(),
0.001, 10, true, 0, false);

Error:

Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
     at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Class.java:264)
     at
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
     at org.apache.hadoop.io.WritableName.getClass(WritableName.java:71)
     at
org.apache.hadoop.io.SequenceFile$Reader.getValueClass(SequenceFile.java:1671)
     at
org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1613)
     at
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1486)
     at
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1475)
     at
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1470)
     at
org.apache.hadoop.mapreduce.lib.input.SequenceFileRecordReader.initialize(SequenceFileRecordReader.java:50)
     at
org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:522)
     at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
     at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
     at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAs(Subject.java:416)
     at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
     at org.apache.hadoop.mapred.Child.main(Child.java:249)

Can someone spot me why this error?

I have added all the jars (including hadoop-core and mahout-math) to the
Eclipse project. In fact I added all the jars in mahout installation
directory.

On 08/04/2012 09:54 PM, Abhinav M Kulkarni wrote:
> Hi,
>
> I have a small snippet of code which gives me error. Points written in
> the input directory are of the type VectorWritable (value), key being
> LongWritable. Clusters written to part-00000 file are of the type
> Kluster (value), key being Text. Both these files are of SequenceFile
> format.
>
> Code snippet:
>
> KMeansDriver.run(conf, new Path("input/points"), new
> Path("input/part-00000"),
>                 new Path("output"), new EuclideanDistanceMeasure(),
> 0.001, 10, true, 0, false);
>
> Error:
>
> Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
>     at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
>     at java.security.AccessController.doPrivileged(Native Method)
>     at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
>     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
>     at java.lang.Class.forName0(Native Method)
>     at java.lang.Class.forName(Class.java:264)
>     at
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
>     at org.apache.hadoop.io.WritableName.getClass(WritableName.java:71)
>     at
> org.apache.hadoop.io.SequenceFile$Reader.getValueClass(SequenceFile.java:1671)
>     at
> org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1613)
>     at
> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1486)
>     at
> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1475)
>     at
> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1470)
>     at
> org.apache.hadoop.mapreduce.lib.input.SequenceFileRecordReader.initialize(SequenceFileRecordReader.java:50)
>     at
> org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:522)
>     at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
>     at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
>     at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
>     at java.security.AccessController.doPrivileged(Native Method)
>     at javax.security.auth.Subject.doAs(Subject.java:416)
>     at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
>     at org.apache.hadoop.mapred.Child.main(Child.java:249)
>
> Can someone spot me why this error?

How do you run this program? Are you running a Hadoop cluster app out
of Eclipse? I do not know if that mode copies your jars out to the
executors.

On Sat, Aug 4, 2012 at 10:30 PM, Abhinav M Kulkarni
<[EMAIL PROTECTED]> wrote:
> I have added all the jars (including hadoop-core and mahout-math) to the
> Eclipse project. In fact I added all the jars in mahout installation
> directory.
>
>
> On 08/04/2012 09:54 PM, Abhinav M Kulkarni wrote:
>>
>> Hi,
>>
>> I have a small snippet of code which gives me error. Points written in the
>> input directory are of the type VectorWritable (value), key being
>> LongWritable. Clusters written to part-00000 file are of the type Kluster
>> (value), key being Text. Both these files are of SequenceFile format.
>>
>> Code snippet:
>>
>> KMeansDriver.run(conf, new Path("input/points"), new
>> Path("input/part-00000"),
>>                 new Path("output"), new EuclideanDistanceMeasure(), 0.001,
>> 10, true, 0, false);
>>
>> Error:
>>
>> Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
>>     at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
>>     at java.security.AccessController.doPrivileged(Native Method)
>>     at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
>>     at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
>>     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
>>     at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
>>     at java.lang.Class.forName0(Native Method)
>>     at java.lang.Class.forName(Class.java:264)
>>     at
>> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
>>     at org.apache.hadoop.io.WritableName.getClass(WritableName.java:71)
>>     at
>> org.apache.hadoop.io.SequenceFile$Reader.getValueClass(SequenceFile.java:1671)
>>     at
>> org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1613)
>>     at
>> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1486)
>>     at
>> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1475)
>>     at
>> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1470)
>>     at
>> org.apache.hadoop.mapreduce.lib.input.SequenceFileRecordReader.initialize(SequenceFileRecordReader.java:50)
>>     at
>> org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:522)
>>     at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
>>     at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
>>     at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
>>     at java.security.AccessController.doPrivileged(Native Method)
>>     at javax.security.auth.Subject.doAs(Subject.java:416)
>>     at
>> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
>>     at org.apache.hadoop.mapred.Child.main(Child.java:249)
>>
>> Can someone spot me why this error?
>
>

--
Lance Norskog
[EMAIL PROTECTED]

In fact I just checked that there is no Vector class/Interface under
org.apache.mahout.math. I don't understand this.

On 08/04/2012 10:30 PM, Abhinav M Kulkarni wrote:
> I have added all the jars (including hadoop-core and mahout-math) to
> the Eclipse project. In fact I added all the jars in mahout
> installation directory.
>
> On 08/04/2012 09:54 PM, Abhinav M Kulkarni wrote:
>> Hi,
>>
>> I have a small snippet of code which gives me error. Points written
>> in the input directory are of the type VectorWritable (value), key
>> being LongWritable. Clusters written to part-00000 file are of the
>> type Kluster (value), key being Text. Both these files are of
>> SequenceFile format.
>>
>> Code snippet:
>>
>> KMeansDriver.run(conf, new Path("input/points"), new
>> Path("input/part-00000"),
>>                 new Path("output"), new EuclideanDistanceMeasure(),
>> 0.001, 10, true, 0, false);
>>
>> Error:
>>
>> Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
>>     at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
>>     at java.security.AccessController.doPrivileged(Native Method)
>>     at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
>>     at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
>>     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
>>     at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
>>     at java.lang.Class.forName0(Native Method)
>>     at java.lang.Class.forName(Class.java:264)
>>     at
>> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
>>     at org.apache.hadoop.io.WritableName.getClass(WritableName.java:71)
>>     at
>> org.apache.hadoop.io.SequenceFile$Reader.getValueClass(SequenceFile.java:1671)
>>     at
>> org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1613)
>>     at
>> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1486)
>>     at
>> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1475)
>>     at
>> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1470)
>>     at
>> org.apache.hadoop.mapreduce.lib.input.SequenceFileRecordReader.initialize(SequenceFileRecordReader.java:50)
>>     at
>> org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:522)
>>     at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
>>     at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
>>     at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
>>     at java.security.AccessController.doPrivileged(Native Method)
>>     at javax.security.auth.Subject.doAs(Subject.java:416)
>>     at
>> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
>>     at org.apache.hadoop.mapred.Child.main(Child.java:249)
>>
>> Can someone spot me why this error?
>

Hi Lance,

I run this program from Eclipse. I am actually able to write/read
underlying HDFS. I have also ran several Hadoop programs from Eclipse. I
added all the jars using 'Add External JARs' option in Eclipse.

However I just checked that there is no Vector class/interface under
org.apache.mahout.math, hence NoClassFoundException.

Thanks.

On 08/04/2012 11:47 PM, Lance Norskog wrote:
> How do you run this program? Are you running a Hadoop cluster app out
> of Eclipse? I do not know if that mode copies your jars out to the
> executors.
>
> On Sat, Aug 4, 2012 at 10:30 PM, Abhinav M Kulkarni
> <[EMAIL PROTECTED]> wrote:
>> I have added all the jars (including hadoop-core and mahout-math) to the
>> Eclipse project. In fact I added all the jars in mahout installation
>> directory.
>>
>>
>> On 08/04/2012 09:54 PM, Abhinav M Kulkarni wrote:
>>> Hi,
>>>
>>> I have a small snippet of code which gives me error. Points written in the
>>> input directory are of the type VectorWritable (value), key being
>>> LongWritable. Clusters written to part-00000 file are of the type Kluster
>>> (value), key being Text. Both these files are of SequenceFile format.
>>>
>>> Code snippet:
>>>
>>> KMeansDriver.run(conf, new Path("input/points"), new
>>> Path("input/part-00000"),
>>>                  new Path("output"), new EuclideanDistanceMeasure(), 0.001,
>>> 10, true, 0, false);
>>>
>>> Error:
>>>
>>> Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
>>>      at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
>>>      at java.security.AccessController.doPrivileged(Native Method)
>>>      at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
>>>      at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
>>>      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
>>>      at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
>>>      at java.lang.Class.forName0(Native Method)
>>>      at java.lang.Class.forName(Class.java:264)
>>>      at
>>> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
>>>      at org.apache.hadoop.io.WritableName.getClass(WritableName.java:71)
>>>      at
>>> org.apache.hadoop.io.SequenceFile$Reader.getValueClass(SequenceFile.java:1671)
>>>      at
>>> org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1613)
>>>      at
>>> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1486)
>>>      at
>>> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1475)
>>>      at
>>> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1470)
>>>      at
>>> org.apache.hadoop.mapreduce.lib.input.SequenceFileRecordReader.initialize(SequenceFileRecordReader.java:50)
>>>      at
>>> org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:522)
>>>      at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
>>>      at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
>>>      at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
>>>      at java.security.AccessController.doPrivileged(Native Method)
>>>      at javax.security.auth.Subject.doAs(Subject.java:416)
>>>      at
>>> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
>>>      at org.apache.hadoop.mapred.Child.main(Child.java:249)
>>>
>>> Can someone spot me why this error?
>>
>
>

Hello sir,
Please have a look in which the specify .. when i had tried to run the
program i had also faced same issue. There is lot of dependency as you can
verify in pom.xml

shuyo.wordpress.com/2011/02/01/mahout-development-environment-with-maven-and-eclipse-1/

Syed Abdul kather
send from Samsung S3
On Aug 5, 2012 12:56 PM, "Abhinav M Kulkarni" <[EMAIL PROTECTED]>
wrote:

> Hi Lance,
>
> I run this program from Eclipse. I am actually able to write/read
> underlying HDFS. I have also ran several Hadoop programs from Eclipse. I
> added all the jars using 'Add External JARs' option in Eclipse.
>
> However I just checked that there is no Vector class/interface under
> org.apache.mahout.math, hence NoClassFoundException.
>
> Thanks.
>
> On 08/04/2012 11:47 PM, Lance Norskog wrote:
>
>> How do you run this program? Are you running a Hadoop cluster app out
>> of Eclipse? I do not know if that mode copies your jars out to the
>> executors.
>>
>> On Sat, Aug 4, 2012 at 10:30 PM, Abhinav M Kulkarni
>> <[EMAIL PROTECTED]> wrote:
>>
>>> I have added all the jars (including hadoop-core and mahout-math) to the
>>> Eclipse project. In fact I added all the jars in mahout installation
>>> directory.
>>>
>>>
>>> On 08/04/2012 09:54 PM, Abhinav M Kulkarni wrote:
>>>
>>>> Hi,
>>>>
>>>> I have a small snippet of code which gives me error. Points written in
>>>> the
>>>> input directory are of the type VectorWritable (value), key being
>>>> LongWritable. Clusters written to part-00000 file are of the type
>>>> Kluster
>>>> (value), key being Text. Both these files are of SequenceFile format.
>>>>
>>>> Code snippet:
>>>>
>>>> KMeansDriver.run(conf, new Path("input/points"), new
>>>> Path("input/part-00000"),
>>>>                  new Path("output"), new EuclideanDistanceMeasure(),
>>>> 0.001,
>>>> 10, true, 0, false);
>>>>
>>>> Error:
>>>>
>>>> Error: java.lang.**ClassNotFoundException:
>>>> org.apache.mahout.math.Vector
>>>>      at java.net.URLClassLoader$1.run(**URLClassLoader.java:217)
>>>>      at java.security.**AccessController.doPrivileged(**Native Method)
>>>>      at java.net.URLClassLoader.**findClass(URLClassLoader.java:**205)
>>>>      at java.lang.ClassLoader.**loadClass(ClassLoader.java:**321)
>>>>      at sun.misc.Launcher$**AppClassLoader.loadClass(**
>>>> Launcher.java:294)
>>>>      at java.lang.ClassLoader.**loadClass(ClassLoader.java:**266)
>>>>      at java.lang.Class.forName0(**Native Method)
>>>>      at java.lang.Class.forName(Class.**java:264)
>>>>      at
>>>> org.apache.hadoop.conf.**Configuration.getClassByName(**
>>>> Configuration.java:820)
>>>>      at org.apache.hadoop.io.**WritableName.getClass(**
>>>> WritableName.java:71)
>>>>      at
>>>> org.apache.hadoop.io.**SequenceFile$Reader.**
>>>> getValueClass(SequenceFile.**java:1671)
>>>>      at
>>>> org.apache.hadoop.io.**SequenceFile$Reader.init(**
>>>> SequenceFile.java:1613)
>>>>      at
>>>> org.apache.hadoop.io.**SequenceFile$Reader.<init>(**
>>>> SequenceFile.java:1486)
>>>>      at
>>>> org.apache.hadoop.io.**SequenceFile$Reader.<init>(**
>>>> SequenceFile.java:1475)
>>>>      at
>>>> org.apache.hadoop.io.**SequenceFile$Reader.<init>(**
>>>> SequenceFile.java:1470)
>>>>      at
>>>> org.apache.hadoop.mapreduce.**lib.input.**SequenceFileRecordReader.**
>>>> initialize(**SequenceFileRecordReader.java:**50)
>>>>      at
>>>> org.apache.hadoop.mapred.**MapTask$**NewTrackingRecordReader.**
>>>> initialize(MapTask.java:522)
>>>>      at org.apache.hadoop.mapred.**MapTask.runNewMapper(MapTask.**
>>>> java:763)
>>>>      at org.apache.hadoop.mapred.**MapTask.run(MapTask.java:370)
>>>>      at org.apache.hadoop.mapred.**Child$4.run(Child.java:255)
>>>>      at java.security.**AccessController.doPrivileged(**Native Method)
>>>>      at javax.security.auth.Subject.**doAs(Subject.java:416)
>>>>      at
>>>> org.apache.hadoop.security.**UserGroupInformation.doAs(**
>>>> UserGroupInformation.java:**1121)
>>>>      at org.apache.hadoop.mapred.**Child.main(Child.java:249)