Trying to run the examples in Chapter 13 of the book, get the following error when trying to execute
bash> $MAHOUT_HOME/bin/mahout cat donut.csv

Running on hadoop, using HADOOP_HOME=/usr/local/hadoop
No HADOOP_CONF_DIR set, using /usr/local/hadoop/src/conf
11/07/26 03:45:09 WARN driver.MahoutDriver: Unable to add class: org.apache.mahout.utils.eval.InMemoryFactorizationEvaluator
11/07/26 03:45:09 WARN driver.MahoutDriver: Unable to add class: org.apache.mahout.utils.eval.ParallelFactorizationEvaluator
11/07/26 03:45:09 WARN driver.MahoutDriver: Unable to add class: org.apache.mahout.utils.eval.DatasetSplitter
Exception in thread "main" java.lang.NoSuchMethodError: org.apache.hadoop.util.ProgramDriver.driver([Ljava/lang/String;)V
    at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:188)
    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.RunJar.main(RunJar.java:192)
Any idea as to what am I missing?

Here are my environment details:-

Hadoop version: 0.21.0
Mahout version: 0.6

Never mind, figured it out I need to downgrade my Hadoop to 0.20.2 to fix this.

Thanks.

________________________________
From: Suneel Marthi <[EMAIL PROTECTED]>
To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
Sent: Tuesday, July 26, 2011 3:58 AM
Subject: Mahout newbiw question
Trying to run the examples in Chapter 13 of the book, get the following error when trying to execute
bash> $MAHOUT_HOME/bin/mahout cat donut.csv

Running on hadoop, using HADOOP_HOME=/usr/local/hadoop
No HADOOP_CONF_DIR set, using /usr/local/hadoop/src/conf
11/07/26 03:45:09 WARN driver.MahoutDriver: Unable to add class: org.apache.mahout.utils.eval.InMemoryFactorizationEvaluator
11/07/26 03:45:09 WARN driver.MahoutDriver: Unable to add class: org.apache.mahout.utils.eval.ParallelFactorizationEvaluator
11/07/26 03:45:09 WARN driver.MahoutDriver: Unable to add class: org.apache.mahout.utils.eval.DatasetSplitter
Exception in thread "main" java.lang.NoSuchMethodError: org.apache.hadoop.util.ProgramDriver.driver([Ljava/lang/String;)V
   
 at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:188)
    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.RunJar.main(RunJar.java:192)
Any idea as to what am I missing?

Here are my environment details:-

Hadoop version: 0.21.0
Mahout version: 0.6

Yes, 0.5 goes with 0.20.2. HEAD/0.6 goes with 0.20.203.0

On Tue, Jul 26, 2011 at 9:02 AM, Suneel Marthi <[EMAIL PROTECTED]>wrote:

> Never mind, figured it out I need to downgrade my Hadoop to 0.20.2 to fix
> this.
>
> Thanks.
>
>
>
> ________________________________
> From: Suneel Marthi <[EMAIL PROTECTED]>
> To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
> Sent: Tuesday, July 26, 2011 3:58 AM
> Subject: Mahout newbiw question
>
>
> Trying to run the examples in Chapter 13 of the book, get the following
> error when trying to execute
>
>
> bash> $MAHOUT_HOME/bin/mahout cat donut.csv
>
> Running on hadoop, using HADOOP_HOME=/usr/local/hadoop
> No HADOOP_CONF_DIR set, using /usr/local/hadoop/src/conf
> 11/07/26 03:45:09 WARN driver.MahoutDriver: Unable to add class:
> org.apache.mahout.utils.eval.InMemoryFactorizationEvaluator
> 11/07/26 03:45:09 WARN driver.MahoutDriver: Unable to add class:
> org.apache.mahout.utils.eval.ParallelFactorizationEvaluator
> 11/07/26 03:45:09 WARN driver.MahoutDriver: Unable to add class:
> org.apache.mahout.utils.eval.DatasetSplitter
> Exception in thread "main" java.lang.NoSuchMethodError:
> org.apache.hadoop.util.ProgramDriver.driver([Ljava/lang/String;)V
>
>  at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:188)
>     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.RunJar.main(RunJar.java:192)
>
>
> Any idea as to what am I missing?
>
> Here are my environment details:-
>
> Hadoop version: 0.21.0
> Mahout version: 0.6
>

Downgraded to 0.20.203.0 and am able to run through the exercises.

I now hit the next issue while trying to run the example.

bash> ./bin/mahout trainlogistic --input donut.csv \
> --output ./model \
> --target color --categories 2 \
> --predictors x y --types numeric \
> --features 20 --passes 100 --rate 50
Running on hadoop, using HADOOP_HOME=/usr/local/hadoop
No HADOOP_CONF_DIR set, using /usr/local/hadoop/src/conf
11/07/26 04:21:58 WARN driver.MahoutDriver: Unable to add class: org.apache.mahout.utils.eval.InMemoryFactorizationEvaluator
11/07/26 04:21:58 WARN driver.MahoutDriver: Unable to add class: org.apache.mahout.utils.eval.ParallelFactorizationEvaluator
11/07/26 04:21:58 WARN driver.MahoutDriver: Unable to add class: org.apache.mahout.utils.eval.DatasetSplitter
Exception in thread "main" java.lang.IllegalStateException: Unable to construct type converter... shouldn't be possible
    at org.apache.mahout.classifier.sgd.CsvRecordFactory.firstLine(CsvRecordFactory.java:223)
    at org.apache.mahout.classifier.sgd.TrainLogistic.mainToOutput(TrainLogistic.java:78)
    at org.apache.mahout.classifier.sgd.TrainLogistic.main(TrainLogistic.java:64)
    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.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
    at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
    at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:188)
    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.RunJar.main(RunJar.java:156)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.apache.mahout.classifier.sgd.CsvRecordFactory.firstLine(CsvRecordFactory.java:215)
    ... 14 more
Caused by: java.lang.IncompatibleClassChangeError: Expecting non-static method org.apache.mahout.vectorizer.encoders.CachingValueEncoder.bytesForString(Ljava/lang/String;)[B
    at org.apache.mahout.vectorizer.encoders.CachingValueEncoder.cacheProbeLocations(CachingValueEncoder.java:50)
    at org.apache.mahout.vectorizer.encoders.CachingValueEncoder.<init>(CachingValueEncoder.java:29)
    at org.apache.mahout.vectorizer.encoders.ConstantValueEncoder.<init>(ConstantValueEncoder.java:27)
    ... 19 more
Figured out that bytesToString() is a static method in FeatureVectorEncoder.java and is referenced in CachingValueEncoder.cacheProbeLocations().
Modified the caller, CachingValueEncoder.cacheProbeLocations()to call FeatureValueencoder.bytesToString() and am good now.

But I do see that bytesToString() is referenced in every class that extends FeatureVectorEncoder.java, wonder if its working.

Kind Regards.

________________________________
From: Sean Owen <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]; Suneel Marthi <[EMAIL PROTECTED]>
Sent: Tuesday, July 26, 2011 4:38 AM
Subject: Re: Mahout newbiw question
Yes, 0.5 goes with 0.20.2. HEAD/0.6 goes with 0.20.203.0
On Tue, Jul 26, 2011 at 9:02 AM, Suneel Marthi <[EMAIL PROTECTED]> wrote:

Never mind, figured it out I need to downgrade my Hadoop to 0.20.2 to fix this.
>
>Thanks.
>
>
>
>
>________________________________

(Downgraded Hadoop to *0.20.2* you mean?)
(I'd suggest you actually upgrade Mahout to 0.6/HEAD instead.)

This means you have incompatible versions of the compiled code lying around.
Make sure you aren't including different versions twice, and/or recompile
your local copy. The method in question is correct in 0.5 and HEAD.

On Tue, Jul 26, 2011 at 9:45 AM, Suneel Marthi <[EMAIL PROTECTED]>wrote:

> Downgraded to 0.20.203.0 and am able to run through the exercises.
>
> I now hit the next issue while trying to run the example.
>
> bash> ./bin/mahout trainlogistic --input donut.csv \
> > --output ./model \
> > --target color --categories 2 \
> > --predictors x y --types numeric \
> > --features 20 --passes 100 --rate 50
>
> Running on hadoop, using HADOOP_HOME=/usr/local/hadoop
> No HADOOP_CONF_DIR set, using /usr/local/hadoop/src/conf
> 11/07/26 04:21:58 WARN driver.MahoutDriver: Unable to add class:
> org.apache.mahout.utils.eval.InMemoryFactorizationEvaluator
> 11/07/26 04:21:58 WARN driver.MahoutDriver: Unable to add class:
> org.apache.mahout.utils.eval.ParallelFactorizationEvaluator
> 11/07/26 04:21:58 WARN driver.MahoutDriver: Unable to add class:
> org.apache.mahout.utils.eval.DatasetSplitter
> Exception in thread "main" java.lang.IllegalStateException: Unable to
> construct type converter... shouldn't be possible
>     at
> org.apache.mahout.classifier.sgd.CsvRecordFactory.firstLine(CsvRecordFactory.java:223)
>     at
> org.apache.mahout.classifier.sgd.TrainLogistic.mainToOutput(TrainLogistic.java:78)
>     at
> org.apache.mahout.classifier.sgd.TrainLogistic.main(TrainLogistic.java:64)
>
>     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.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
>     at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
>
>     at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:188)
>     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.RunJar.main(RunJar.java:156)
> Caused by: java.lang.reflect.InvocationTargetException
>     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>     at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>     at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>     at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>     at
> org.apache.mahout.classifier.sgd.CsvRecordFactory.firstLine(CsvRecordFactory.java:215)
>     ... 14 more
> Caused by: java.lang.IncompatibleClassChangeError: Expecting non-static
> method
> org.apache.mahout.vectorizer.encoders.CachingValueEncoder.bytesForString(Ljava/lang/String;)[B
>     at
> org.apache.mahout.vectorizer.encoders.CachingValueEncoder.cacheProbeLocations(CachingValueEncoder.java:50)
>     at
> org.apache.mahout.vectorizer.encoders.CachingValueEncoder.<init>(CachingValueEncoder.java:29)
>     at
> org.apache.mahout.vectorizer.encoders.ConstantValueEncoder.<init>(ConstantValueEncoder.java:27)
>     ... 19 more
>
> Figured out that bytesToString() is a static method in
> FeatureVectorEncoder.java and is referenced in
> CachingValueEncoder.cacheProbeLocations().
> Modified the caller, CachingValueEncoder.cacheProbeLocations() to call
> FeatureValueencoder.bytesToString() and am good now.
>
> But I do see that bytesToString() is referenced in every class that extends
> FeatureVectorEncoder.java, wonder if its working.

If you are on HEAD, you don't need to downgrade to Hadoop 0.20.2 (though it
will work). I suspect that original problem was a symptom of the same issue.
Yes, try a clean build.

On Tue, Jul 26, 2011 at 10:18 AM, Suneel Marthi <[EMAIL PROTECTED]>wrote:

> I am running 0.6 mahout, but I guess I should have done a clean build, will
> give that a shot.  My bad and thanks for your help.
>
>