Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/19019#discussion_r134479721
--- Diff: docs/README.md ---
@@ -9,19 +9,22 @@ documentation yourself. Why build it yourself? So that
you have the docs that co
whichever version of Spark you currently have checked out of revision
control.
## Prerequisites
-The Spark documentation build uses a number of tools to build HTML docs
and API docs in Scala,
-Python and R.
+
+The Spark documentation build uses a number of tools to build HTML docs
and API docs in Scala, Java,
+Python, R and SQL.
You need to have
[Ruby](https://www.ruby-lang.org/en/documentation/installation/) and
[Python](https://docs.python.org/2/using/unix.html#getting-and-installing-the-latest-version-of-python)
installed. Also install the following libraries:
+
```sh
- $ sudo gem install jekyll jekyll-redirect-from pygments.rb
- $ sudo pip install Pygments
- # Following is needed only for generating API docs
- $ sudo pip install sphinx pypandoc mkdocs
- $ sudo Rscript -e 'install.packages(c("knitr", "devtools", "roxygen2",
"testthat", "rmarkdown"), repos="http://cran.stat.ucla.edu/";)'
+$ sudo gem install jekyll jekyll-redirect-from pygments.rb
+$ sudo pip install Pygments
+# Following is needed only for generating API docs
+$ sudo pip install sphinx pypandoc mkdocs
+$ sudo Rscript -e 'install.packages(c("knitr", "devtools", "roxygen2",
"testthat", "rmarkdown"), repos="http://cran.stat.ucla.edu/";)'
--- End diff --
I think we mistakenly make this indented. For example, these were all
intended identically -
https://github.com/apache/spark/blob/branch-1.5/docs/README.md
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