How to use SparkR within Rstudio?

June 14, 2015
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[This article was first published on Shige's Research Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)
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Setting up Spark and SparkR is quite easy (assume you are running v.1.4): just grab one of the pre-built binaries and unzip to a folder. There is also a shell script to start SparkR from command line. The document suggest to put the following lines

Sys.setenv(SPARK_HOME=”/home/shige/bin/spark”)
.libPaths(c(file.path(Sys.getenv(“SPARK_HOME”), “R”, “lib”), .libPaths()))
library(SparkR)
sc <- sparkR.init(master=”local”)

into the .Rprofile file. This, however, has the undesirable side effect of adding yet another directory to which R packages can be installed.

My solution is:

1. Create a soft link of the SparkR directory in the the directory where other R packages are installed (ln -s /home/shige/bin/spark/R/lib/SparkR /home/shige/R/x86_64-pc-linux-gnu-library/3.2)
2. Add only one line (Sys.setenv(SPARK_HOME=”/home/shige/bin/spark”)) to the .Rprofile file.

All set.

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