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Subject: Re: is Hadoop based SVD_ALS a complete feature?
From: Pat Ferrel <pat.ferrel@gmail.com>
In-Reply-To: <50F814E5.3010206@apache.org>
Date: Thu, 17 Jan 2013 08:09:35 -0800
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Message-Id: <67E2FED0-62F1-486A-8D92-9F92939362BF@gmail.com>
References: 
 <CAF3_Sm-rhbNn-14vZMVXSuTMicaxb8iSejo6E9oyrfT4DVjmQg@mail.gmail.com>
 <B9DB5B59-26EE-43F7-8426-A153F062AAEA@gmail.com>
 <50F814E5.3010206@apache.org>
To: user@mahout.apache.org,
 ssc@apache.org

There is a problem in factorize-movielens-1M.sh and the DataSplitter =
needs to initialize the args parser before it accesses the options ( I =
think I put a ticket in for the DataSplitter with a patch). The last =
problem below is Ying Liao's alone.

On Jan 17, 2013, at 7:12 AM, Sebastian Schelter <ssc@apache.org> wrote:

Which version/distribution of Hadoop are you using?

On 17.01.2013 16:08, Pat Ferrel wrote:
> +1 this, found the same problems, same fixes. Haven't seem your last =
problem
>=20
> On Jan 11, 2013, at 1:41 PM, Ying Liao <yliao422@gmail.com> wrote:
>=20
> I am tring factorize-movielens-1M.sh. I first find a bug in the sh =
file.
> Then I find a bug in =
org.apache.mahout.cf.taste.hadoop.als.DatasetSplitter,
> the argMap is not mapped. No I hit a third bug:
> [cloudera@localhost trunk]$ hadoop jar
> =
/home/cloudera/workspace/Mahout/trunk/examples/target/mahout-examples-0.8-=
SNAPSHOT-job.jar
> org.apache.mahout.cf.taste.hadoop.als.DatasetSplitter --input
> /user/cloudera/ratings.csv --output /user/cloudera/dataset
> --trainingPercentage 0.9 --probePercentage 0.1 --tempDir
> /user/cloudera/dataset/tmp
> 13/01/11 16:37:30 INFO common.AbstractJob: Command line arguments:
> {--endPhase=3D[2147483647], --input=3D[/user/cloudera/ratings.csv],
> --output=3D[/user/cloudera/dataset], --probePercentage=3D[0.1],
> --startPhase=3D[0], --tempDir=3D[/user/cloudera/dataset/tmp],
> --trainingPercentage=3D[0.9]}
> 13/01/11 16:37:30 WARN conf.Configuration: mapred.input.dir is =
deprecated.
> Instead, use mapreduce.input.fileinputformat.inputdir
> 13/01/11 16:37:30 WARN conf.Configuration: mapred.compress.map.output =
is
> deprecated. Instead, use mapreduce.map.output.compress
> 13/01/11 16:37:30 WARN conf.Configuration: mapred.output.dir is =
deprecated.
> Instead, use mapreduce.output.fileoutputformat.outputdir
> Exception in thread "main" java.lang.IncompatibleClassChangeError: =
Found
> interface org.apache.hadoop.mapreduce.JobContext, but class was =
expected
> at =
org.apache.mahout.common.HadoopUtil.getCustomJobName(HadoopUtil.java:166)
> at =
org.apache.mahout.common.AbstractJob.prepareJob(AbstractJob.java:553)
> at
> =
org.apache.mahout.cf.taste.hadoop.als.DatasetSplitter.run(DatasetSplitter.=
java:85)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
> at
> =
org.apache.mahout.cf.taste.hadoop.als.DatasetSplitter.main(DatasetSplitter=
.java:62)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> =
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:=
39)
> at
> =
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorIm=
pl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
>=20
> Any help is appreciated.
>=20
> Thanks,
> Ying
>=20