Hi,
Can you give more detail on your workflow ?
I am not sure i understand it all
Why do you need to work with your data in Hadoop Spark through shinyapp ?
Are you connected to your cluster from R and RStudio first ? Does it works without shiny ?
I would have thought about a workflow more like
- import and work with data in amazon with spark and hadoop (using R or not)
- expose the data somewhere
- make a shiny app to communicate and go through the results.