Outside of Rails I used to write map/reduce jobs using ruby and a jruby jar file to deploy the job to our hadoop cluster. Startup time for each job is super slo

Outside of Rails I used to write map/reduce jobs using ruby and a jruby jar file to deploy the job to our hadoop cluster. Startup time for each job is super slow due to jruby but developer ergonomics mattered to me more than efficiency here. Slow but who cares.