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Posted to user@mahout.apache.org by Grant Ingersoll <gs...@apache.org> on 2010/10/29 23:18:25 UTC
Re: Vector Dumper error
What commands/code are you running? It looks to me like the Key simply for the file you are looking at isn't what you expect it to be. Also, have a look at the SequenceFileDumper, that is a more general purpose view of Seq. Files.
(also, no need to send to both lists. All the devs are on this list and this is a usage question at this point)
On Oct 29, 2010, at 3:23 AM, Divya wrote:
> Hi,
>
>
>
> I am able to dump vector for tfidf-vectors, tf-vectors files
>
> Which gets generated during SparseVectorsFromSequenceFiles.
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> I am getting following error when I try to generate vectors from
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> Wordcount (files generated during SparseVectorsFromSequenceFiles )
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> Error -
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> Exception in thread "main" java.lang.ClassCastException:
> org.apache.hadoop.io.LongWritable cannot be cast to
> org.apache.mahout.math.VectorWritable
>
> at
> org.apache.mahout.utils.vectors.VectorDumper.main(VectorDumper.java:144)
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>
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> tokenized-documents (files generated during SparseVectorsFromSequenceFiles )
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> Error -
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> Exception in thread "main" java.lang.ClassCastException:
> org.apache.mahout.common.StringTuple cannot be cast to
> org.apache.mahout.math.VectorWritable
>
> at
> org.apache.mahout.utils.vectors.VectorDumper.main(VectorDumper.java:144)
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>
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> df-count (files generated during SparseVectorsFromSequenceFiles )
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> Error -
>
>
>
> Exception in thread "main" java.lang.ClassCastException:
> org.apache.hadoop.io.LongWritable cannot be cast to
> org.apache.mahout.math.VectorWritable
>
> at
> org.apache.mahout.utils.vectors.VectorDumper.main(VectorDumper.java:144)
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> dictionary.file-0 (files generated during SparseVectorsFromSequenceFiles )
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> Error -
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>
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> Exception in thread "main" java.lang.ClassCastException:
> org.apache.hadoop.io.IntWritable cannot be cast to
> org.apache.mahout.math.VectorWritable
>
> at
> org.apache.mahout.utils.vectors.VectorDumper.main(VectorDumper.java:144)
>
>
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> What am I doing wrong here ?
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> Regards,
>
> Divya
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>
--------------------------
Grant Ingersoll
http://www.lucidimagination.com