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https://issues.apache.org/jira/browse/MAHOUT-427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12885757#action_12885757
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Drew Farris commented on MAHOUT-427:
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bq. To get the script to run correctly I had to run an additional 'mvn install'
from the examples subdirectory. Not sure why that was necessary, but the
examples job file wasn't created until I ran the second command. So there may
be a build issue with the current scripts
Yes, examples should have been built alongside everything else, so strictly
speaking the second mvn install should not be necessary. Did the first mvn
install executed from the base directory complete successfully?
I'll give it a go following the EC2 instructions in the wiki to the letter to
see if I can reproduce.
> $MAHOUT_HOME/examples/bin/build-reuters.sh doesn't run successfully because
> of classpath issues related to the -core argument
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: MAHOUT-427
> URL: https://issues.apache.org/jira/browse/MAHOUT-427
> Project: Mahout
> Issue Type: Bug
> Affects Versions: 0.4
> Environment: Hadoop installation on EC2 as described here -
> https://cwiki.apache.org/MAHOUT/mahoutec2.html
> Reporter: Peter Goldstein
>
> Once I resolved issue MAHOUT-426 , I was still not able to run the
> ./examples/bin/build-reuters.sh script without errors These were
> ClassNotFoundExceptions, indicating a problem with the classpath.
> The issue appears to be related to the "-core" argument, which controls the
> classpath. Placing '-core' as the first argument to the individual
> $MAHOUT_HOME/bin/mahout calls in the script solved the issue, but I'm not
> sure it was the correct solution. It's unclear to me what the '-core'
> argument is supposed to signify.
> Can someone shed some light on this, and tell me whether this is the correct
> solution to the problem? And if not, what is the correct solution to this
> classpath issue.
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