[jira] [Assigned] (SPARK-12910) Support for specifying version of R to use while creating sparkR libraries

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-12910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-12910:
------------------------------------

    Assignee:     (was: Apache Spark)

> Support for specifying version of R to use while creating sparkR libraries
> --------------------------------------------------------------------------
>
>                 Key: SPARK-12910
>                 URL: https://issues.apache.org/jira/browse/SPARK-12910
>             Project: Spark
>          Issue Type: Improvement
>          Components: SparkR
>         Environment: Linux
>            Reporter: Shubhanshu Mishra
>            Priority: Minor
>              Labels: installation, sparkR
>
> When we use `$SPARK_HOME/R/install-dev.sh` it uses the default system R. However, a user might have locally installed their own version of R. There should be a way to specify which R version to use. 
> I have fixed this in my code using the following patch:
> ```
> $ git diff HEAD
> diff --git a/R/README.md b/R/README.md
> index 005f56d..99182e5 100644
> --- a/R/README.md
> +++ b/R/README.md
> @@ -1,6 +1,15 @@
>  # R on Spark
>  
>  SparkR is an R package that provides a light-weight frontend to use Spark from R.
> +### Installing sparkR
> +
> +Libraries of sparkR need to be created in `$SPARK_HOME/R/lib`. This can be done by running the script `$SPARK_HOME/R/install-dev.sh`.
> +By default the above script uses the system wide installation of R. However, this can be changed to any user installed location of R by giving the full path of the `$R_HOME` as the first argument to the install-dev.sh script.
> +Example: 
> +```
> +# where /home/username/R is where R is installed and /home/username/R/bin contains the files R and RScript
> +./install-dev.sh /home/username/R 
> +```
>  
>  ### SparkR development
>  
> diff --git a/R/install-dev.sh b/R/install-dev.sh
> index 4972bb9..a8efa86 100755
> --- a/R/install-dev.sh
> +++ b/R/install-dev.sh
> @@ -35,12 +35,19 @@ LIB_DIR="$FWDIR/lib"
>  mkdir -p $LIB_DIR
>  
>  pushd $FWDIR > /dev/null
> +if [ ! -z "$1" ]
> +  then
> +    R_HOME="$1/bin"
> +   else
> +    R_HOME="$(dirname $(which R))"
> +fi
> +echo "USING R_HOME = $R_HOME"
>  
>  # Generate Rd files if devtools is installed
> -Rscript -e ' if("devtools" %in% rownames(installed.packages())) { library(devtools); devtools::document(pkg="./pkg", roclets=c("rd")) }'
> +"$R_HOME/"Rscript -e ' if("devtools" %in% rownames(installed.packages())) { library(devtools); devtools::document(pkg="./pkg", roclets=c("rd")) }'
>  
>  # Install SparkR to $LIB_DIR
> -R CMD INSTALL --library=$LIB_DIR $FWDIR/pkg/
> +"$R_HOME/"R CMD INSTALL --library=$LIB_DIR $FWDIR/pkg/
>  
>  # Zip the SparkR package so that it can be distributed to worker nodes on YARN
>  cd $LIB_DIR
> ```



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