Github user Leemoonsoo commented on the pull request:

    https://github.com/apache/incubator-zeppelin/pull/702#issuecomment-181140583
  
    Thanks for the contribution.
    
    I think `spark/lib/rscala_2.10-1.0.6.jar` shouldn't be included in the 
source tree. Can this be downloaded on build time?
    
    And `rscala_2.10-1.0.6.jar` looks like available on BSD license according 
to [here](https://cran.r-project.org/web/packages/rscala/index.html). Then, 
you'll need add license of the library into 
`zeppelin-distribution/src/bin_license/LICENSE`, and add 
[LICENSE](https://cran.r-project.org/web/packages/rscala/LICENSE) file under 
`zeppelin-distribution/src/bin_license/licenses` directory.
    
    Most interpreters include at least one unittest or integration test. So I 
suggest have an test.
    
    I think R interpreter related source file need to be excluded for profile 
spark-1.3, spark-1.2, spark-1.1, so CI doesn't fail for those profile. I think 
maven capable of doing it.


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