Fix R Environment

Merge branch 'master' of https://github.com/datainsightat/bigdata_dev…

…elopment_environment

Spark ETL Temple

You can upload data to Hadoop, use Spark to transform the data and save the result on a Postgres db. Spark runs locally inside the ide, or inside a determined cluster.

Initial Release

The cluster consists of:

• Hadoop/Hive docker
• Spark docker
• Postgres docker

You can interact with these services using:

• Jupyterlab
• Theia