tutorial of the RHadoop?

[Felipe Gutierrez]

Hi everyone,

i have to execute the Revolution software at Hadoop. It seems I need to execute at RHadoop. When I go the the Revolution site (https://github.com/RevolutionAnalytics) there are 4 packages I have to download. Do I have to install all four? Is there any tutorial to install them and to check how to execute the RevolutionAnalytical software in R at RHadoop?

Thanks!

Felipe

[Los]

Hi Felipe,

The four packages provide different functionalities.  You might want to get started with just rhdfs to read from and write to HDFS from within R.

The basic process is:

1) Install a Hadoop cluster.

2) Configure a client machine to be able to connect to the Hadoop cluster.  i.e. you should be able to run `hdfs dfs -ls`.

3) Install R  on a client machine.

4) Tell R where to find Hadoop and Hadoop streaming

    export HADOOP_HOME=/path/to/hadoop/home

    export HADOOP_STREAMING=/path/to/hadoop-streaming-version.jar

5) Configure R to use Java.

R CMD javareconf

6) Install rJava

R --no-save <<EOT
  install.packages( pkgs="rJava",
                    dependencies=TRUE,
                    repos="http://www.rforge.net" )
EOT

7) Install rhdfs

R CMD INSTALL /path/to/rhdfs_version.tar.gz

I hope this helps.

-Carlos