Github user felixcheung commented on the issue:

    https://github.com/apache/spark/pull/16014
  
    @shivaram Cool, I did know about release-build but I didn't know it's 
running on Jenkins. I *think* we should be ok but might want to check Jenkins 
has "e1071" and "survival" which are optional for compatibility tests but `R 
CMD check` is enforcing/requiring it. If you recall, 
[this](https://github.com/apache/spark/pull/15790#issuecomment-259780799) is 
this conversation that prompted this change.
    
    @rxin This PR updates what goes into the Spark binary release to match what 
we (intend to) release on CRAN for the R package
    
    As for the diff, this is the delta between this PR and Spark 2.0.2 under 
the R/lib/SparkR directory. It turns out `R CMD check` also depends on Rd file 
generation in install-dev.sh (ie. `devtools::document(pkg="./pkg", 
roclets=c("rd")) }`).. this is going to take more time to untangle this in a 
follow up.
    
    _what's additional_
    ```
    SparkR/
    -rw-r--r--   INDEX
    drwxr-xr-x   doc
    
    SparkR/Meta/
    -rw-r--r--   vignette.rds
    
    SparkR/doc/
    -rw-r--r--   sparkr-vignettes.Rmd
    -rw-r--r--   sparkr-vignettes.R
    -rw-r--r--   sparkr-vignettes.html
    -rw-r--r--   index.html
    ```
    
    _what's omitted_
    ```
    SparkR/html/
    -rw-r--r--  1 root root  1319 Nov 29 08:05 R.css
    -rw-r--r--  1 root root 81153 Nov 29 08:05 00Index.html
    ```
    
    What it used to have `year.html` `write.parquet.html` 
`sparkR.session.html`, the html directory now only has 2 files. My 
understanding is these knitr html output are actually not used at runtime. I 
checked that `?sparkR.session` in the `sparkR` is still working correctly.



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