This module contains utility functions for defining a configuration.
This exists purely to keep the logic our of the main
Vessel module to avoid
code bloat, and to aid in making the environment configuration easier to test
Creates a new Job configuration from a Map.
This is typically called with
System.get_env/1 as this is the behaviour used
with the Hadoop Streaming framework. We remove all keys with capitals, as the
Hadoop Streaming spec states that all values are lower cased.