Try naming the input *directory* not the particular input file.
On 8/27/10 7:51 PM, Valerio wrote:
Thanks but I need more information about the command to convert a text in a
WritableVector and than to understand and run this file in a right file for the
kmeans.
I did some tempts and now i have got this result:
Thanks for your explanation about VectorWritable.
Actually I can modify weka folder to call the right clustering and I tried
hadoop with the wordcount and it works.
I read on the Mahout's quisckstart page about VectorWritable
but I didn't how to create them, I tried this:
bin/mahout kmeans --input
/home/vuvvo/Scaricati/reuters21578/prova/prova2/vectors/part-00000 --k 3
--output /home/vuvvo/Scaricati/reuters21578/prova/prova2/vectors/output-kmeans
--clusters
/home/vuvvo/Scaricati/reuters21578/prova/prova2/vectors/output-kmeans/clusters
but i receveid this message:
no HADOOP_CONF_DIR or HADOOP_HOME set, running locally
28-ago-2010 4.21.44 org.apache.hadoop.util.NativeCodeLoader<clinit>
AVVERTENZA: Unable to load native-hadoop library for your platform... using
builtin-java classes where applicable
28-ago-2010 4.21.44 org.apache.hadoop.io.compress.CodecPool getCompressor
INFO: Got brand-new compressor
28-ago-2010 4.21.44 org.slf4j.impl.JCLLoggerAdapter error
GRAVE: MahoutDriver failed with args: [--input,
/home/vuvvo/Scaricati/reuters21578/prova/prova2/vectors/part-00000, --k, 3,
--output, /home/vuvvo/Scaricati/reuters21578/prova/prova2/vectors/output-kmeans,
--clusters,
/home/vuvvo/Scaricati/reuters21578/prova/prova2/vectors/output-kmeans/clusters,
null]
Index: 0, Size: 0
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size:
0
at java.util.ArrayList.rangeCheck(ArrayList.java:571)
at java.util.ArrayList.get(ArrayList.java:349)
at
org.apache.mahout.clustering.kmeans.RandomSeedGenerator.buildRandom(
RandomSeedGenerator.java:113)
at
org.apache.mahout.clustering.kmeans.KMeansDriver.main(KMeansDriver.java:164)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.
invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.
java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
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:172)
where I wrong?
