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1.9

## Partnership for Advanced Computing in Europe (PRACE)

Starting DFS, YARN and Rstudio

We need to quickly check if everything is working in our virtual machine and to get familiar with the environment we’ll be working with.

Open terminal by clicking on black icon on bottom left and type

start-dfs.sh
start-yarn.sh


Then type

rstudio


to open the Rstudio GUI where you may type basic RHadoop commands in Console directly

library(rhdfs)
hdfs.init()


You may see log and some warning messages but no filesystem errors while executing above commands. There may be some glyph rendering errors which we can simply ignore.

Try to quit and stop the Hadoop servers by using counterpart commands stop-yarn.sh and stop-dfs.sh in terminal.