text: # rmr-master-centos.sh by Jeffrey Breen, based on rmr-master.sh
  # original copyright attached:
  #
  # Copyright 2011 Revolution Analytics
  #    
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  # 
  #      http://www.apache.org/licenses/LICENSE-2.0
  # 
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  sudo yum -y --enablerepo=epel install R R-devel
  
  sudo R --no-save << EOF
  install.packages(c('Rcpp', 'RJSONIO', 'itertools', 'digest'), repos="http://cran.revolutionanalytics.com", INSTALL_opts=c('--byte-compile') )
  EOF
  
  # install the rmr package from RHadoop:
  
  branch=master
  
  wget --no-check-certificate https://github.com/RevolutionAnalytics/RHadoop/tarball/$branch -O - | tar zx
  mv RevolutionAnalytics-RHadoop* RHadoop
  sudo R CMD INSTALL --byte-compile RHadoop/rmr/pkg/
  
  sudo su << EOF1 
  cat >> /etc/profile <<EOF
   
  export HADOOP_HOME=/usr/lib/hadoop
  
  EOF
  EOF1
  