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Posted to user@mahout.apache.org by "Peter M. Goldstein" <pe...@yahoo.com> on 2010/07/01 18:29:40 UTC
RE: No class definition found for org.apache.mahout.math.Vector when invoking K-means example
Hi Gokul,
Using the Mahout on Amazon EC2 directions I'm able to get a little farther
than this. Specifically, using the job file created when building the
examples I don't get any ClassNotFoundExceptions. Instead I get an
InvalidInputException (presumably because I didn't prepare any input data
for the job). If you provide some appropriately formatted candidate data
I'd be happy to try and run a complete test.
In my test I'm using the command line:
$HADOOP_HOME/bin/hadoop jar
$MAHOUT_HOME/examples/target/mahout-examples-0.4-SNAPSHOT.job
org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
Again, it's critical to build and use the examples Job file. If I attempt
to use the core Job file instead key classes appear to be absent.
Hope that helps.
--Peter
-----Original Message-----
From: Gokul Pillai [mailto:gokooltech@gmail.com]
Sent: Wednesday, June 30, 2010 2:35 PM
To: user@mahout.apache.org
Subject: Re: No class definition found for org.apache.mahout.math.Vector
when invoking K-means example
Peter
Thank you for your response. However, after making your changes, it still
does not work for me.
In fact I tried another way which is:
1. create a lib folder within my Job Jar-file and put the
"org.apache.mahout.math.Vector" and other dependent jars.
2. Launch the command via "hadoop jar ./mahout-examples-with-libs.jar
org.apache.mahout.clustering.syntheticcontrol.kmeans.Job"
However, I still get the error:
"Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)"
Another thing I tried is modify the $HADOOP_HOME/conf/hadoop-env.sh and edit
the HADOOP_CLASSPATH to include the dependent libraries. Even that does not
work.
Regards
Gokul
On Mon, Jun 28, 2010 at 3:43 PM, Peter M. Goldstein <
peter_m_goldstein@yahoo.com> wrote:
> Hi Gokul,
>
> You may want to see the following bug reports:
>
> https://issues.apache.org/jira/browse/MAHOUT-426
>
> https://issues.apache.org/jira/browse/MAHOUT-427
>
> https://issues.apache.org/jira/browse/MAHOUT-428
>
> I ran into similar issues as you and had to some minor patching to get
> everything to work.
>
> Also, make sure you run an explicit "mvn install" from within the examples
> directory. I had to do this to get the JOB files to build correctly.
> Getting the JOB files to build correctly solves (sort of) issues 426 and
> 427, so you only need to apply the patch described in 428.
>
> Hope that helps.
>
> Regards,
>
> Peter
>
> -----Original Message-----
> From: Gokul Pillai [mailto:gokooltech@gmail.com]
> Sent: Monday, June 28, 2010 3:27 PM
> To: user@mahout.apache.org
> Subject: No class definition found for org.apache.mahout.math.Vector when
> invoking K-means example
>
> I made a new installation of Hadoop 0.20 from Cloudera.
> I then installed Mahout 0.4-SNAPSHOT by doing a SVN checkout this morning
> and ran mvn install on core, utils and examples.
> I tried running the KMeans Clustering example by doing the following as
> mentioned in the tutorial:
> hadoop jar ~/mahout/trunk/examples/target/mahout-examples-0.4-SNAPSHOT.jar
> org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
>
> And I keep getting this error although I have explicitly set my Classpath
> to
>
>
"/usr/lib/hadoop/lib/mahout-collections-1.0.jar:/usr/lib/hadoop/lib/mahout-m
>
>
ath-0.4-SNAPSHOT.jar:/usr/lib/hadoop/lib/mahout-utils-0.4-SNAPSHOT.jar:/usr/
> lib/hadoop/lib/mahout-core-0.4-SNAPSHOT.jar":
>
> 10/06/28 15:19:21 INFO mapred.JobClient: Task Id :
> attempt_201006280959_0027_r_000000_1, Status : FAILED
> java.lang.RuntimeException: java.lang.ClassNotFoundException:
> org.apache.mahout.clustering.kmeans.KMeansCombiner
> at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:868)
> at
>
>
org.apache.hadoop.mapreduce.JobContext.getCombinerClass(JobContext.java:169)
> at org.apache.hadoop.mapred.Task$CombinerRunner.create(Task.java:1107)
> at
>
>
org.apache.hadoop.mapred.ReduceTask$ReduceCopier.<init>(ReduceTask.java:1780
> )
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:375)
> at org.apache.hadoop.mapred.Child.main(Child.java:170)
> Caused by: java.lang.ClassNotFoundException:
> org.apache.mahout.clustering.kmeans.KMeansCombiner
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:247)
> at
>
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:815)
> at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:866)
> ... 5 more
>
>
> Any help would be appreciated.
>
> Regards
> Gokul
>
>
>
Re: No class definition found for org.apache.mahout.math.Vector when
invoking K-means example
Posted by Gokul Pillai <go...@gmail.com>.
To clarify, do the fixes relate to only Java code or is there any script in
the mahout/trunk/bin folder too?
If so, how does one get that from the repo?
On Fri, Jul 9, 2010 at 4:16 PM, Gokul Pillai <go...@gmail.com> wrote:
> Peter:
> I just noticed that there has been a new patch applied by Drew yesterday
> for this. (https://issues.apache.org/jira/browse/MAHOUT-426)
>
> The last comment on the thread says "Integrated in Mahout-Quality #128
> (See http://hudson.zones.apache.org/hudson/job/Mahout-Quality/128/)"
>
> Does it mean that if I did a "mvn-U" on the trunk, I should be able to get
> the fix and then not run into the issue ?
>
> Regards
> gokul
>
> On Thu, Jul 1, 2010 at 2:31 PM, Gokul Pillai <go...@gmail.com> wrote:
>
>> The version on my instance is 0.20.1+152.
>> I am guessing if the jar file name is
>> "hadoop-0.20.1+152-fairscheduler.jar" then that is the version.
>>
>>
>> On Thu, Jul 1, 2010 at 11:11 AM, Peter M. Goldstein <
>> peter_m_goldstein@yahoo.com> wrote:
>>
>>> Gokul,
>>>
>>> What version of Hadoop are you using? I'm running with 0.20+320, and I
>>> don't run into this issue.
>>>
>>> Thanks.
>>>
>>> Regards,
>>>
>>> Peter
>>>
>>> -----Original Message-----
>>> From: Gokul Pillai [mailto:gokooltech@gmail.com]
>>> Sent: Thursday, July 01, 2010 10:29 AM
>>> To: user@mahout.apache.org
>>> Subject: Re: No class definition found for org.apache.mahout.math.Vector
>>> when invoking K-means example
>>>
>>> Hello Peter:
>>> When i run that command, I get the following although different error:
>>> Exception in thread "main" java.lang.NoClassDefFoundError:
>>> org/apache/commons/cli2/OptionException
>>> at java.lang.Class.forName0(Native Method)
>>> at java.lang.Class.forName(Class.java:247)
>>> at org.apache.hadoop.util.RunJar.main(RunJar.java:149)
>>> Caused by: java.lang.ClassNotFoundException:
>>> org.apache.commons.cli2.OptionException
>>> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>>>
>>> Digging into this, I find that hadoop 0.20 ships with
>>> "commons-cli-1.2.jar"
>>> but mahout 0.40 Snapshot version depends on "commons-cli-2.0-mahout.jar"
>>> that is there in the $MAHOUT_HOME/trunk/examples/target/ folder once you
>>> "mvn install" in the "examples" folder.
>>>
>>> So i replaced the jar file in hadoop/lib with this one and then it goes
>>> back
>>> to the ClassNotFound error for Vector class.
>>>
>>> Regards
>>> Gokul
>>>
>>> On Thu, Jul 1, 2010 at 9:29 AM, Peter M. Goldstein <
>>> peter_m_goldstein@yahoo.com> wrote:
>>>
>>> > Hi Gokul,
>>> >
>>> > Using the Mahout on Amazon EC2 directions I'm able to get a little
>>> farther
>>> > than this. Specifically, using the job file created when building the
>>> > examples I don't get any ClassNotFoundExceptions. Instead I get an
>>> > InvalidInputException (presumably because I didn't prepare any input
>>> data
>>> > for the job). If you provide some appropriately formatted candidate
>>> data
>>> > I'd be happy to try and run a complete test.
>>> >
>>> > In my test I'm using the command line:
>>> >
>>> > $HADOOP_HOME/bin/hadoop jar
>>> > $MAHOUT_HOME/examples/target/mahout-examples-0.4-SNAPSHOT.job
>>> > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
>>> >
>>> > Again, it's critical to build and use the examples Job file. If I
>>> attempt
>>> > to use the core Job file instead key classes appear to be absent.
>>> >
>>> > Hope that helps.
>>> >
>>> > --Peter
>>> >
>>> > -----Original Message-----
>>> > From: Gokul Pillai [mailto:gokooltech@gmail.com]
>>> > Sent: Wednesday, June 30, 2010 2:35 PM
>>> > To: user@mahout.apache.org
>>> > Subject: Re: No class definition found for
>>> org.apache.mahout.math.Vector
>>> > when invoking K-means example
>>> >
>>> > Peter
>>> > Thank you for your response. However, after making your changes, it
>>> still
>>> > does not work for me.
>>> > In fact I tried another way which is:
>>> > 1. create a lib folder within my Job Jar-file and put the
>>> > "org.apache.mahout.math.Vector" and other dependent jars.
>>> > 2. Launch the command via "hadoop jar ./mahout-examples-with-libs.jar
>>> > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job"
>>> >
>>> > However, I still get the error:
>>> > "Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
>>> > at java.net.URLClassLoader$1.run(URLClassLoader.java:200)"
>>> >
>>> >
>>> > Another thing I tried is modify the $HADOOP_HOME/conf/hadoop-env.sh and
>>> > edit
>>> > the HADOOP_CLASSPATH to include the dependent libraries. Even that does
>>> not
>>> > work.
>>> >
>>> > Regards
>>> > Gokul
>>> >
>>> > On Mon, Jun 28, 2010 at 3:43 PM, Peter M. Goldstein <
>>> > peter_m_goldstein@yahoo.com> wrote:
>>> >
>>> > > Hi Gokul,
>>> > >
>>> > > You may want to see the following bug reports:
>>> > >
>>> > > https://issues.apache.org/jira/browse/MAHOUT-426
>>> > >
>>> > > https://issues.apache.org/jira/browse/MAHOUT-427
>>> > >
>>> > > https://issues.apache.org/jira/browse/MAHOUT-428
>>> > >
>>> > > I ran into similar issues as you and had to some minor patching to
>>> get
>>> > > everything to work.
>>> > >
>>> > > Also, make sure you run an explicit "mvn install" from within the
>>> > examples
>>> > > directory. I had to do this to get the JOB files to build correctly.
>>> > > Getting the JOB files to build correctly solves (sort of) issues 426
>>> and
>>> > > 427, so you only need to apply the patch described in 428.
>>> > >
>>> > > Hope that helps.
>>> > >
>>> > > Regards,
>>> > >
>>> > > Peter
>>> > >
>>> > > -----Original Message-----
>>> > > From: Gokul Pillai [mailto:gokooltech@gmail.com]
>>> > > Sent: Monday, June 28, 2010 3:27 PM
>>> > > To: user@mahout.apache.org
>>> > > Subject: No class definition found for org.apache.mahout.math.Vector
>>> when
>>> > > invoking K-means example
>>> > >
>>> > > I made a new installation of Hadoop 0.20 from Cloudera.
>>> > > I then installed Mahout 0.4-SNAPSHOT by doing a SVN checkout this
>>> morning
>>> > > and ran mvn install on core, utils and examples.
>>> > > I tried running the KMeans Clustering example by doing the following
>>> as
>>> > > mentioned in the tutorial:
>>> > > hadoop jar
>>> > ~/mahout/trunk/examples/target/mahout-examples-0.4-SNAPSHOT.jar
>>> > > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
>>> > >
>>> > > And I keep getting this error although I have explicitly set my
>>> Classpath
>>> > > to
>>> > >
>>> > >
>>> >
>>> >
>>>
>>> "/usr/lib/hadoop/lib/mahout-collections-1.0.jar:/usr/lib/hadoop/lib/mahout-m
>>> > >
>>> > >
>>> >
>>> >
>>>
>>> ath-0.4-SNAPSHOT.jar:/usr/lib/hadoop/lib/mahout-utils-0.4-SNAPSHOT.jar:/usr/
>>> > > lib/hadoop/lib/mahout-core-0.4-SNAPSHOT.jar":
>>> > >
>>> > > 10/06/28 15:19:21 INFO mapred.JobClient: Task Id :
>>> > > attempt_201006280959_0027_r_000000_1, Status : FAILED
>>> > > java.lang.RuntimeException: java.lang.ClassNotFoundException:
>>> > > org.apache.mahout.clustering.kmeans.KMeansCombiner
>>> > > at
>>> > org.apache.hadoop.conf.Configuration.getClass(Configuration.java:868)
>>> > > at
>>> > >
>>> > >
>>> >
>>> >
>>>
>>> org.apache.hadoop.mapreduce.JobContext.getCombinerClass(JobContext.java:169)
>>> > > at
>>> org.apache.hadoop.mapred.Task$CombinerRunner.create(Task.java:1107)
>>> > > at
>>> > >
>>> > >
>>> >
>>> >
>>>
>>> org.apache.hadoop.mapred.ReduceTask$ReduceCopier.<init>(ReduceTask.java:1780
>>> > > )
>>> > > at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:375)
>>> > > at org.apache.hadoop.mapred.Child.main(Child.java:170)
>>> > > Caused by: java.lang.ClassNotFoundException:
>>> > > org.apache.mahout.clustering.kmeans.KMeansCombiner
>>> > > at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>>> > > at java.security.AccessController.doPrivileged(Native Method)
>>> > > at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>>> > > at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>>> > > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>>> > > at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>>> > > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>>> > > at java.lang.Class.forName0(Native Method)
>>> > > at java.lang.Class.forName(Class.java:247)
>>> > > at
>>> > >
>>> >
>>>
>>> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:815)
>>> > > at
>>> > org.apache.hadoop.conf.Configuration.getClass(Configuration.java:866)
>>> > > ... 5 more
>>> > >
>>> > >
>>> > > Any help would be appreciated.
>>> > >
>>> > > Regards
>>> > > Gokul
>>> > >
>>> > >
>>> > >
>>> >
>>> >
>>> >
>>>
>>>
>>>
>>
>
Re: No class definition found for org.apache.mahout.math.Vector when
invoking K-means example
Posted by Gokul Pillai <go...@gmail.com>.
Peter:
I just noticed that there has been a new patch applied by Drew yesterday for
this. (https://issues.apache.org/jira/browse/MAHOUT-426)
The last comment on the thread says "Integrated in Mahout-Quality #128 (See
http://hudson.zones.apache.org/hudson/job/Mahout-Quality/128/)"
Does it mean that if I did a "mvn-U" on the trunk, I should be able to get
the fix and then not run into the issue ?
Regards
gokul
On Thu, Jul 1, 2010 at 2:31 PM, Gokul Pillai <go...@gmail.com> wrote:
> The version on my instance is 0.20.1+152.
> I am guessing if the jar file name is "hadoop-0.20.1+152-fairscheduler.jar"
> then that is the version.
>
>
> On Thu, Jul 1, 2010 at 11:11 AM, Peter M. Goldstein <
> peter_m_goldstein@yahoo.com> wrote:
>
>> Gokul,
>>
>> What version of Hadoop are you using? I'm running with 0.20+320, and I
>> don't run into this issue.
>>
>> Thanks.
>>
>> Regards,
>>
>> Peter
>>
>> -----Original Message-----
>> From: Gokul Pillai [mailto:gokooltech@gmail.com]
>> Sent: Thursday, July 01, 2010 10:29 AM
>> To: user@mahout.apache.org
>> Subject: Re: No class definition found for org.apache.mahout.math.Vector
>> when invoking K-means example
>>
>> Hello Peter:
>> When i run that command, I get the following although different error:
>> Exception in thread "main" java.lang.NoClassDefFoundError:
>> org/apache/commons/cli2/OptionException
>> at java.lang.Class.forName0(Native Method)
>> at java.lang.Class.forName(Class.java:247)
>> at org.apache.hadoop.util.RunJar.main(RunJar.java:149)
>> Caused by: java.lang.ClassNotFoundException:
>> org.apache.commons.cli2.OptionException
>> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>>
>> Digging into this, I find that hadoop 0.20 ships with
>> "commons-cli-1.2.jar"
>> but mahout 0.40 Snapshot version depends on "commons-cli-2.0-mahout.jar"
>> that is there in the $MAHOUT_HOME/trunk/examples/target/ folder once you
>> "mvn install" in the "examples" folder.
>>
>> So i replaced the jar file in hadoop/lib with this one and then it goes
>> back
>> to the ClassNotFound error for Vector class.
>>
>> Regards
>> Gokul
>>
>> On Thu, Jul 1, 2010 at 9:29 AM, Peter M. Goldstein <
>> peter_m_goldstein@yahoo.com> wrote:
>>
>> > Hi Gokul,
>> >
>> > Using the Mahout on Amazon EC2 directions I'm able to get a little
>> farther
>> > than this. Specifically, using the job file created when building the
>> > examples I don't get any ClassNotFoundExceptions. Instead I get an
>> > InvalidInputException (presumably because I didn't prepare any input
>> data
>> > for the job). If you provide some appropriately formatted candidate
>> data
>> > I'd be happy to try and run a complete test.
>> >
>> > In my test I'm using the command line:
>> >
>> > $HADOOP_HOME/bin/hadoop jar
>> > $MAHOUT_HOME/examples/target/mahout-examples-0.4-SNAPSHOT.job
>> > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
>> >
>> > Again, it's critical to build and use the examples Job file. If I
>> attempt
>> > to use the core Job file instead key classes appear to be absent.
>> >
>> > Hope that helps.
>> >
>> > --Peter
>> >
>> > -----Original Message-----
>> > From: Gokul Pillai [mailto:gokooltech@gmail.com]
>> > Sent: Wednesday, June 30, 2010 2:35 PM
>> > To: user@mahout.apache.org
>> > Subject: Re: No class definition found for org.apache.mahout.math.Vector
>> > when invoking K-means example
>> >
>> > Peter
>> > Thank you for your response. However, after making your changes, it
>> still
>> > does not work for me.
>> > In fact I tried another way which is:
>> > 1. create a lib folder within my Job Jar-file and put the
>> > "org.apache.mahout.math.Vector" and other dependent jars.
>> > 2. Launch the command via "hadoop jar ./mahout-examples-with-libs.jar
>> > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job"
>> >
>> > However, I still get the error:
>> > "Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
>> > at java.net.URLClassLoader$1.run(URLClassLoader.java:200)"
>> >
>> >
>> > Another thing I tried is modify the $HADOOP_HOME/conf/hadoop-env.sh and
>> > edit
>> > the HADOOP_CLASSPATH to include the dependent libraries. Even that does
>> not
>> > work.
>> >
>> > Regards
>> > Gokul
>> >
>> > On Mon, Jun 28, 2010 at 3:43 PM, Peter M. Goldstein <
>> > peter_m_goldstein@yahoo.com> wrote:
>> >
>> > > Hi Gokul,
>> > >
>> > > You may want to see the following bug reports:
>> > >
>> > > https://issues.apache.org/jira/browse/MAHOUT-426
>> > >
>> > > https://issues.apache.org/jira/browse/MAHOUT-427
>> > >
>> > > https://issues.apache.org/jira/browse/MAHOUT-428
>> > >
>> > > I ran into similar issues as you and had to some minor patching to get
>> > > everything to work.
>> > >
>> > > Also, make sure you run an explicit "mvn install" from within the
>> > examples
>> > > directory. I had to do this to get the JOB files to build correctly.
>> > > Getting the JOB files to build correctly solves (sort of) issues 426
>> and
>> > > 427, so you only need to apply the patch described in 428.
>> > >
>> > > Hope that helps.
>> > >
>> > > Regards,
>> > >
>> > > Peter
>> > >
>> > > -----Original Message-----
>> > > From: Gokul Pillai [mailto:gokooltech@gmail.com]
>> > > Sent: Monday, June 28, 2010 3:27 PM
>> > > To: user@mahout.apache.org
>> > > Subject: No class definition found for org.apache.mahout.math.Vector
>> when
>> > > invoking K-means example
>> > >
>> > > I made a new installation of Hadoop 0.20 from Cloudera.
>> > > I then installed Mahout 0.4-SNAPSHOT by doing a SVN checkout this
>> morning
>> > > and ran mvn install on core, utils and examples.
>> > > I tried running the KMeans Clustering example by doing the following
>> as
>> > > mentioned in the tutorial:
>> > > hadoop jar
>> > ~/mahout/trunk/examples/target/mahout-examples-0.4-SNAPSHOT.jar
>> > > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
>> > >
>> > > And I keep getting this error although I have explicitly set my
>> Classpath
>> > > to
>> > >
>> > >
>> >
>> >
>>
>> "/usr/lib/hadoop/lib/mahout-collections-1.0.jar:/usr/lib/hadoop/lib/mahout-m
>> > >
>> > >
>> >
>> >
>>
>> ath-0.4-SNAPSHOT.jar:/usr/lib/hadoop/lib/mahout-utils-0.4-SNAPSHOT.jar:/usr/
>> > > lib/hadoop/lib/mahout-core-0.4-SNAPSHOT.jar":
>> > >
>> > > 10/06/28 15:19:21 INFO mapred.JobClient: Task Id :
>> > > attempt_201006280959_0027_r_000000_1, Status : FAILED
>> > > java.lang.RuntimeException: java.lang.ClassNotFoundException:
>> > > org.apache.mahout.clustering.kmeans.KMeansCombiner
>> > > at
>> > org.apache.hadoop.conf.Configuration.getClass(Configuration.java:868)
>> > > at
>> > >
>> > >
>> >
>> >
>>
>> org.apache.hadoop.mapreduce.JobContext.getCombinerClass(JobContext.java:169)
>> > > at
>> org.apache.hadoop.mapred.Task$CombinerRunner.create(Task.java:1107)
>> > > at
>> > >
>> > >
>> >
>> >
>>
>> org.apache.hadoop.mapred.ReduceTask$ReduceCopier.<init>(ReduceTask.java:1780
>> > > )
>> > > at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:375)
>> > > at org.apache.hadoop.mapred.Child.main(Child.java:170)
>> > > Caused by: java.lang.ClassNotFoundException:
>> > > org.apache.mahout.clustering.kmeans.KMeansCombiner
>> > > at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>> > > at java.security.AccessController.doPrivileged(Native Method)
>> > > at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>> > > at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>> > > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>> > > at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>> > > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>> > > at java.lang.Class.forName0(Native Method)
>> > > at java.lang.Class.forName(Class.java:247)
>> > > at
>> > >
>> >
>>
>> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:815)
>> > > at
>> > org.apache.hadoop.conf.Configuration.getClass(Configuration.java:866)
>> > > ... 5 more
>> > >
>> > >
>> > > Any help would be appreciated.
>> > >
>> > > Regards
>> > > Gokul
>> > >
>> > >
>> > >
>> >
>> >
>> >
>>
>>
>>
>
Re: No class definition found for org.apache.mahout.math.Vector when
invoking K-means example
Posted by Gokul Pillai <go...@gmail.com>.
The version on my instance is 0.20.1+152.
I am guessing if the jar file name is "hadoop-0.20.1+152-fairscheduler.jar"
then that is the version.
On Thu, Jul 1, 2010 at 11:11 AM, Peter M. Goldstein <
peter_m_goldstein@yahoo.com> wrote:
> Gokul,
>
> What version of Hadoop are you using? I'm running with 0.20+320, and I
> don't run into this issue.
>
> Thanks.
>
> Regards,
>
> Peter
>
> -----Original Message-----
> From: Gokul Pillai [mailto:gokooltech@gmail.com]
> Sent: Thursday, July 01, 2010 10:29 AM
> To: user@mahout.apache.org
> Subject: Re: No class definition found for org.apache.mahout.math.Vector
> when invoking K-means example
>
> Hello Peter:
> When i run that command, I get the following although different error:
> Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/commons/cli2/OptionException
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:247)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:149)
> Caused by: java.lang.ClassNotFoundException:
> org.apache.commons.cli2.OptionException
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>
> Digging into this, I find that hadoop 0.20 ships with "commons-cli-1.2.jar"
> but mahout 0.40 Snapshot version depends on "commons-cli-2.0-mahout.jar"
> that is there in the $MAHOUT_HOME/trunk/examples/target/ folder once you
> "mvn install" in the "examples" folder.
>
> So i replaced the jar file in hadoop/lib with this one and then it goes
> back
> to the ClassNotFound error for Vector class.
>
> Regards
> Gokul
>
> On Thu, Jul 1, 2010 at 9:29 AM, Peter M. Goldstein <
> peter_m_goldstein@yahoo.com> wrote:
>
> > Hi Gokul,
> >
> > Using the Mahout on Amazon EC2 directions I'm able to get a little
> farther
> > than this. Specifically, using the job file created when building the
> > examples I don't get any ClassNotFoundExceptions. Instead I get an
> > InvalidInputException (presumably because I didn't prepare any input data
> > for the job). If you provide some appropriately formatted candidate data
> > I'd be happy to try and run a complete test.
> >
> > In my test I'm using the command line:
> >
> > $HADOOP_HOME/bin/hadoop jar
> > $MAHOUT_HOME/examples/target/mahout-examples-0.4-SNAPSHOT.job
> > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
> >
> > Again, it's critical to build and use the examples Job file. If I
> attempt
> > to use the core Job file instead key classes appear to be absent.
> >
> > Hope that helps.
> >
> > --Peter
> >
> > -----Original Message-----
> > From: Gokul Pillai [mailto:gokooltech@gmail.com]
> > Sent: Wednesday, June 30, 2010 2:35 PM
> > To: user@mahout.apache.org
> > Subject: Re: No class definition found for org.apache.mahout.math.Vector
> > when invoking K-means example
> >
> > Peter
> > Thank you for your response. However, after making your changes, it still
> > does not work for me.
> > In fact I tried another way which is:
> > 1. create a lib folder within my Job Jar-file and put the
> > "org.apache.mahout.math.Vector" and other dependent jars.
> > 2. Launch the command via "hadoop jar ./mahout-examples-with-libs.jar
> > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job"
> >
> > However, I still get the error:
> > "Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
> > at java.net.URLClassLoader$1.run(URLClassLoader.java:200)"
> >
> >
> > Another thing I tried is modify the $HADOOP_HOME/conf/hadoop-env.sh and
> > edit
> > the HADOOP_CLASSPATH to include the dependent libraries. Even that does
> not
> > work.
> >
> > Regards
> > Gokul
> >
> > On Mon, Jun 28, 2010 at 3:43 PM, Peter M. Goldstein <
> > peter_m_goldstein@yahoo.com> wrote:
> >
> > > Hi Gokul,
> > >
> > > You may want to see the following bug reports:
> > >
> > > https://issues.apache.org/jira/browse/MAHOUT-426
> > >
> > > https://issues.apache.org/jira/browse/MAHOUT-427
> > >
> > > https://issues.apache.org/jira/browse/MAHOUT-428
> > >
> > > I ran into similar issues as you and had to some minor patching to get
> > > everything to work.
> > >
> > > Also, make sure you run an explicit "mvn install" from within the
> > examples
> > > directory. I had to do this to get the JOB files to build correctly.
> > > Getting the JOB files to build correctly solves (sort of) issues 426
> and
> > > 427, so you only need to apply the patch described in 428.
> > >
> > > Hope that helps.
> > >
> > > Regards,
> > >
> > > Peter
> > >
> > > -----Original Message-----
> > > From: Gokul Pillai [mailto:gokooltech@gmail.com]
> > > Sent: Monday, June 28, 2010 3:27 PM
> > > To: user@mahout.apache.org
> > > Subject: No class definition found for org.apache.mahout.math.Vector
> when
> > > invoking K-means example
> > >
> > > I made a new installation of Hadoop 0.20 from Cloudera.
> > > I then installed Mahout 0.4-SNAPSHOT by doing a SVN checkout this
> morning
> > > and ran mvn install on core, utils and examples.
> > > I tried running the KMeans Clustering example by doing the following as
> > > mentioned in the tutorial:
> > > hadoop jar
> > ~/mahout/trunk/examples/target/mahout-examples-0.4-SNAPSHOT.jar
> > > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
> > >
> > > And I keep getting this error although I have explicitly set my
> Classpath
> > > to
> > >
> > >
> >
> >
>
> "/usr/lib/hadoop/lib/mahout-collections-1.0.jar:/usr/lib/hadoop/lib/mahout-m
> > >
> > >
> >
> >
>
> ath-0.4-SNAPSHOT.jar:/usr/lib/hadoop/lib/mahout-utils-0.4-SNAPSHOT.jar:/usr/
> > > lib/hadoop/lib/mahout-core-0.4-SNAPSHOT.jar":
> > >
> > > 10/06/28 15:19:21 INFO mapred.JobClient: Task Id :
> > > attempt_201006280959_0027_r_000000_1, Status : FAILED
> > > java.lang.RuntimeException: java.lang.ClassNotFoundException:
> > > org.apache.mahout.clustering.kmeans.KMeansCombiner
> > > at
> > org.apache.hadoop.conf.Configuration.getClass(Configuration.java:868)
> > > at
> > >
> > >
> >
> >
>
> org.apache.hadoop.mapreduce.JobContext.getCombinerClass(JobContext.java:169)
> > > at
> org.apache.hadoop.mapred.Task$CombinerRunner.create(Task.java:1107)
> > > at
> > >
> > >
> >
> >
>
> org.apache.hadoop.mapred.ReduceTask$ReduceCopier.<init>(ReduceTask.java:1780
> > > )
> > > at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:375)
> > > at org.apache.hadoop.mapred.Child.main(Child.java:170)
> > > Caused by: java.lang.ClassNotFoundException:
> > > org.apache.mahout.clustering.kmeans.KMeansCombiner
> > > at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> > > at java.security.AccessController.doPrivileged(Native Method)
> > > at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> > > at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> > > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> > > at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> > > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> > > at java.lang.Class.forName0(Native Method)
> > > at java.lang.Class.forName(Class.java:247)
> > > at
> > >
> >
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:815)
> > > at
> > org.apache.hadoop.conf.Configuration.getClass(Configuration.java:866)
> > > ... 5 more
> > >
> > >
> > > Any help would be appreciated.
> > >
> > > Regards
> > > Gokul
> > >
> > >
> > >
> >
> >
> >
>
>
>
RE: No class definition found for org.apache.mahout.math.Vector when invoking K-means example
Posted by "Peter M. Goldstein" <pe...@yahoo.com>.
Gokul,
What version of Hadoop are you using? I'm running with 0.20+320, and I
don't run into this issue.
Thanks.
Regards,
Peter
-----Original Message-----
From: Gokul Pillai [mailto:gokooltech@gmail.com]
Sent: Thursday, July 01, 2010 10:29 AM
To: user@mahout.apache.org
Subject: Re: No class definition found for org.apache.mahout.math.Vector
when invoking K-means example
Hello Peter:
When i run that command, I get the following although different error:
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/commons/cli2/OptionException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.hadoop.util.RunJar.main(RunJar.java:149)
Caused by: java.lang.ClassNotFoundException:
org.apache.commons.cli2.OptionException
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
Digging into this, I find that hadoop 0.20 ships with "commons-cli-1.2.jar"
but mahout 0.40 Snapshot version depends on "commons-cli-2.0-mahout.jar"
that is there in the $MAHOUT_HOME/trunk/examples/target/ folder once you
"mvn install" in the "examples" folder.
So i replaced the jar file in hadoop/lib with this one and then it goes back
to the ClassNotFound error for Vector class.
Regards
Gokul
On Thu, Jul 1, 2010 at 9:29 AM, Peter M. Goldstein <
peter_m_goldstein@yahoo.com> wrote:
> Hi Gokul,
>
> Using the Mahout on Amazon EC2 directions I'm able to get a little farther
> than this. Specifically, using the job file created when building the
> examples I don't get any ClassNotFoundExceptions. Instead I get an
> InvalidInputException (presumably because I didn't prepare any input data
> for the job). If you provide some appropriately formatted candidate data
> I'd be happy to try and run a complete test.
>
> In my test I'm using the command line:
>
> $HADOOP_HOME/bin/hadoop jar
> $MAHOUT_HOME/examples/target/mahout-examples-0.4-SNAPSHOT.job
> org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
>
> Again, it's critical to build and use the examples Job file. If I attempt
> to use the core Job file instead key classes appear to be absent.
>
> Hope that helps.
>
> --Peter
>
> -----Original Message-----
> From: Gokul Pillai [mailto:gokooltech@gmail.com]
> Sent: Wednesday, June 30, 2010 2:35 PM
> To: user@mahout.apache.org
> Subject: Re: No class definition found for org.apache.mahout.math.Vector
> when invoking K-means example
>
> Peter
> Thank you for your response. However, after making your changes, it still
> does not work for me.
> In fact I tried another way which is:
> 1. create a lib folder within my Job Jar-file and put the
> "org.apache.mahout.math.Vector" and other dependent jars.
> 2. Launch the command via "hadoop jar ./mahout-examples-with-libs.jar
> org.apache.mahout.clustering.syntheticcontrol.kmeans.Job"
>
> However, I still get the error:
> "Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)"
>
>
> Another thing I tried is modify the $HADOOP_HOME/conf/hadoop-env.sh and
> edit
> the HADOOP_CLASSPATH to include the dependent libraries. Even that does
not
> work.
>
> Regards
> Gokul
>
> On Mon, Jun 28, 2010 at 3:43 PM, Peter M. Goldstein <
> peter_m_goldstein@yahoo.com> wrote:
>
> > Hi Gokul,
> >
> > You may want to see the following bug reports:
> >
> > https://issues.apache.org/jira/browse/MAHOUT-426
> >
> > https://issues.apache.org/jira/browse/MAHOUT-427
> >
> > https://issues.apache.org/jira/browse/MAHOUT-428
> >
> > I ran into similar issues as you and had to some minor patching to get
> > everything to work.
> >
> > Also, make sure you run an explicit "mvn install" from within the
> examples
> > directory. I had to do this to get the JOB files to build correctly.
> > Getting the JOB files to build correctly solves (sort of) issues 426 and
> > 427, so you only need to apply the patch described in 428.
> >
> > Hope that helps.
> >
> > Regards,
> >
> > Peter
> >
> > -----Original Message-----
> > From: Gokul Pillai [mailto:gokooltech@gmail.com]
> > Sent: Monday, June 28, 2010 3:27 PM
> > To: user@mahout.apache.org
> > Subject: No class definition found for org.apache.mahout.math.Vector
when
> > invoking K-means example
> >
> > I made a new installation of Hadoop 0.20 from Cloudera.
> > I then installed Mahout 0.4-SNAPSHOT by doing a SVN checkout this
morning
> > and ran mvn install on core, utils and examples.
> > I tried running the KMeans Clustering example by doing the following as
> > mentioned in the tutorial:
> > hadoop jar
> ~/mahout/trunk/examples/target/mahout-examples-0.4-SNAPSHOT.jar
> > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
> >
> > And I keep getting this error although I have explicitly set my
Classpath
> > to
> >
> >
>
>
"/usr/lib/hadoop/lib/mahout-collections-1.0.jar:/usr/lib/hadoop/lib/mahout-m
> >
> >
>
>
ath-0.4-SNAPSHOT.jar:/usr/lib/hadoop/lib/mahout-utils-0.4-SNAPSHOT.jar:/usr/
> > lib/hadoop/lib/mahout-core-0.4-SNAPSHOT.jar":
> >
> > 10/06/28 15:19:21 INFO mapred.JobClient: Task Id :
> > attempt_201006280959_0027_r_000000_1, Status : FAILED
> > java.lang.RuntimeException: java.lang.ClassNotFoundException:
> > org.apache.mahout.clustering.kmeans.KMeansCombiner
> > at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:868)
> > at
> >
> >
>
>
org.apache.hadoop.mapreduce.JobContext.getCombinerClass(JobContext.java:169)
> > at
org.apache.hadoop.mapred.Task$CombinerRunner.create(Task.java:1107)
> > at
> >
> >
>
>
org.apache.hadoop.mapred.ReduceTask$ReduceCopier.<init>(ReduceTask.java:1780
> > )
> > at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:375)
> > at org.apache.hadoop.mapred.Child.main(Child.java:170)
> > Caused by: java.lang.ClassNotFoundException:
> > org.apache.mahout.clustering.kmeans.KMeansCombiner
> > at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> > at java.security.AccessController.doPrivileged(Native Method)
> > at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> > at java.lang.Class.forName0(Native Method)
> > at java.lang.Class.forName(Class.java:247)
> > at
> >
>
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:815)
> > at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:866)
> > ... 5 more
> >
> >
> > Any help would be appreciated.
> >
> > Regards
> > Gokul
> >
> >
> >
>
>
>
Re: No class definition found for org.apache.mahout.math.Vector when
invoking K-means example
Posted by Gokul Pillai <go...@gmail.com>.
Hello Peter:
When i run that command, I get the following although different error:
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/commons/cli2/OptionException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.hadoop.util.RunJar.main(RunJar.java:149)
Caused by: java.lang.ClassNotFoundException:
org.apache.commons.cli2.OptionException
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
Digging into this, I find that hadoop 0.20 ships with "commons-cli-1.2.jar"
but mahout 0.40 Snapshot version depends on "commons-cli-2.0-mahout.jar"
that is there in the $MAHOUT_HOME/trunk/examples/target/ folder once you
"mvn install" in the "examples" folder.
So i replaced the jar file in hadoop/lib with this one and then it goes back
to the ClassNotFound error for Vector class.
Regards
Gokul
On Thu, Jul 1, 2010 at 9:29 AM, Peter M. Goldstein <
peter_m_goldstein@yahoo.com> wrote:
> Hi Gokul,
>
> Using the Mahout on Amazon EC2 directions I'm able to get a little farther
> than this. Specifically, using the job file created when building the
> examples I don't get any ClassNotFoundExceptions. Instead I get an
> InvalidInputException (presumably because I didn't prepare any input data
> for the job). If you provide some appropriately formatted candidate data
> I'd be happy to try and run a complete test.
>
> In my test I'm using the command line:
>
> $HADOOP_HOME/bin/hadoop jar
> $MAHOUT_HOME/examples/target/mahout-examples-0.4-SNAPSHOT.job
> org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
>
> Again, it's critical to build and use the examples Job file. If I attempt
> to use the core Job file instead key classes appear to be absent.
>
> Hope that helps.
>
> --Peter
>
> -----Original Message-----
> From: Gokul Pillai [mailto:gokooltech@gmail.com]
> Sent: Wednesday, June 30, 2010 2:35 PM
> To: user@mahout.apache.org
> Subject: Re: No class definition found for org.apache.mahout.math.Vector
> when invoking K-means example
>
> Peter
> Thank you for your response. However, after making your changes, it still
> does not work for me.
> In fact I tried another way which is:
> 1. create a lib folder within my Job Jar-file and put the
> "org.apache.mahout.math.Vector" and other dependent jars.
> 2. Launch the command via "hadoop jar ./mahout-examples-with-libs.jar
> org.apache.mahout.clustering.syntheticcontrol.kmeans.Job"
>
> However, I still get the error:
> "Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)"
>
>
> Another thing I tried is modify the $HADOOP_HOME/conf/hadoop-env.sh and
> edit
> the HADOOP_CLASSPATH to include the dependent libraries. Even that does not
> work.
>
> Regards
> Gokul
>
> On Mon, Jun 28, 2010 at 3:43 PM, Peter M. Goldstein <
> peter_m_goldstein@yahoo.com> wrote:
>
> > Hi Gokul,
> >
> > You may want to see the following bug reports:
> >
> > https://issues.apache.org/jira/browse/MAHOUT-426
> >
> > https://issues.apache.org/jira/browse/MAHOUT-427
> >
> > https://issues.apache.org/jira/browse/MAHOUT-428
> >
> > I ran into similar issues as you and had to some minor patching to get
> > everything to work.
> >
> > Also, make sure you run an explicit "mvn install" from within the
> examples
> > directory. I had to do this to get the JOB files to build correctly.
> > Getting the JOB files to build correctly solves (sort of) issues 426 and
> > 427, so you only need to apply the patch described in 428.
> >
> > Hope that helps.
> >
> > Regards,
> >
> > Peter
> >
> > -----Original Message-----
> > From: Gokul Pillai [mailto:gokooltech@gmail.com]
> > Sent: Monday, June 28, 2010 3:27 PM
> > To: user@mahout.apache.org
> > Subject: No class definition found for org.apache.mahout.math.Vector when
> > invoking K-means example
> >
> > I made a new installation of Hadoop 0.20 from Cloudera.
> > I then installed Mahout 0.4-SNAPSHOT by doing a SVN checkout this morning
> > and ran mvn install on core, utils and examples.
> > I tried running the KMeans Clustering example by doing the following as
> > mentioned in the tutorial:
> > hadoop jar
> ~/mahout/trunk/examples/target/mahout-examples-0.4-SNAPSHOT.jar
> > org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
> >
> > And I keep getting this error although I have explicitly set my Classpath
> > to
> >
> >
>
> "/usr/lib/hadoop/lib/mahout-collections-1.0.jar:/usr/lib/hadoop/lib/mahout-m
> >
> >
>
> ath-0.4-SNAPSHOT.jar:/usr/lib/hadoop/lib/mahout-utils-0.4-SNAPSHOT.jar:/usr/
> > lib/hadoop/lib/mahout-core-0.4-SNAPSHOT.jar":
> >
> > 10/06/28 15:19:21 INFO mapred.JobClient: Task Id :
> > attempt_201006280959_0027_r_000000_1, Status : FAILED
> > java.lang.RuntimeException: java.lang.ClassNotFoundException:
> > org.apache.mahout.clustering.kmeans.KMeansCombiner
> > at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:868)
> > at
> >
> >
>
> org.apache.hadoop.mapreduce.JobContext.getCombinerClass(JobContext.java:169)
> > at org.apache.hadoop.mapred.Task$CombinerRunner.create(Task.java:1107)
> > at
> >
> >
>
> org.apache.hadoop.mapred.ReduceTask$ReduceCopier.<init>(ReduceTask.java:1780
> > )
> > at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:375)
> > at org.apache.hadoop.mapred.Child.main(Child.java:170)
> > Caused by: java.lang.ClassNotFoundException:
> > org.apache.mahout.clustering.kmeans.KMeansCombiner
> > at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> > at java.security.AccessController.doPrivileged(Native Method)
> > at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> > at java.lang.Class.forName0(Native Method)
> > at java.lang.Class.forName(Class.java:247)
> > at
> >
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:815)
> > at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:866)
> > ... 5 more
> >
> >
> > Any help would be appreciated.
> >
> > Regards
> > Gokul
> >
> >
> >
>
>
>