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From Mark Wicks <mawi...@gmail.com>
Subject Re: Interpretating doc-topic output of cvb
Date Mon, 24 Jun 2013 16:57:01 GMT
Thanks for the response.

The command line I used is

mahout cvb -ow -dict sparse/dictionary.file-0 -i matrix/matrix -o
cvb/topics -dt cvb/classifications  -block 2 -x 2 -cd 1e-10  -k2
-seed 6956 -tf 0.25

This completes with no errors in Mahout 0.7.  With Mahout/cvb from trunk I get:

13/06/24 12:48:32 INFO cvb.CVB0Driver: About to run: Writing final
topic/term distributions from temp/topicModelState/model-2 to
cvb/topics
13/06/24 12:48:32 INFO input.FileInputFormat: Total input paths to process : 10
13/06/24 12:48:33 INFO cvb.CVB0Driver: About to run: Writing final
document/topic inference from matrix/matrix to cvb/classifications
13/06/24 12:48:33 INFO mapred.JobClient: Cleaning up the staging area
hdfs://192.168.84.8:9000/tmp/hadoop-hadoop/mapred/staging/mwicks/.staging/job_201304292057_0252
13/06/24 12:48:33 ERROR security.UserGroupInformation:
PriviledgedActionException as:mwicks
cause:org.apache.hadoop.mapred.FileAlreadyExistsException: Output
directory cvb/topics already exists
Exception in thread "main"
org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory
cvb/topics already exists
        at org.apache.hadoop.mapreduce.lib.output.FileOutputFormat.checkOutputSpecs(FileOutputFormat.java:137)
        at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:949)
        at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:912)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1149)
        at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:912)
        at org.apache.hadoop.mapreduce.Job.submit(Job.java:500)
        at org.apache.mahout.clustering.lda.cvb.CVB0Driver.writeDocTopicInference(CVB0Driver.java:463)
        at org.apache.mahout.clustering.lda.cvb.CVB0Driver.run(CVB0Driver.java:339)
        at org.apache.mahout.clustering.lda.cvb.CVB0Driver.run(CVB0Driver.java:198)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.mahout.clustering.lda.cvb.CVB0Driver.main(CVB0Driver.java:534)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
        at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
        at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:195)
        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:601)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:156)


I am certain that "cvb/topics" did not exist before running "mahout
cvb".  After the error, cvb/topics exists and contains data, but
cvb/classifications does not exist.

Mark

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