[jira] [Created] (MAHOUT-1864) Twenty Newsgroups Classification Example fails in case running with MAHOUT_LOCAL=true

["giriraj sharma (JIRA)" <ji...@apache.org>]

giriraj sharma created MAHOUT-1864:
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             Summary: Twenty Newsgroups Classification Example fails in case running with MAHOUT_LOCAL=true 
                 Key: MAHOUT-1864
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1864
             Project: Mahout
          Issue Type: Improvement
          Components: Examples
    Affects Versions: 0.12.0
            Reporter: giriraj sharma
            Priority: Minor
             Fix For: 0.13.0


Twenty Newsgroups Classification Example fails in case running with {{MAHOUT_LOCAL=true}} or else when {{HADOOP_HOME}} env variable is not set.

[Newsgroups|https://mahout.apache.org/users/classification/twenty-newsgroups.html] lists instructions in order to run this classifier. When running in standalone mode({{MAHOUT_LOCAL=true}}), i.e., running {{$ ./examples/bin/classify-20newsgroups.sh}}, the script runs {{./examples/bin/set-dfs-commands.sh}} internally to export hadoop related env variables.

{{set-dfs-commands.sh}} attempts to check for hadoop version despite running with {{MAHOUT_LOCAL}} set as true. IMHO, the script works fine considering the prerequisites, but, it will as well make sense if we can update the script {{./examples/bin/set-dfs-commands.sh}} to export hadoop env varibales only in case {{MAHOUT_LOCAL}} is not set to true.




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