Install JRuby

It is recommended to benchmark Traject on JRuby for processing MARC input for performance. https://github.com/traject/traject.

1. To run JRuby you will need a JRE (the JVM runtime environment) version 7 or higher.

   $ java --version
     java 9
     Java(TM) SE Runtime Environment (build 9+181)
     Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode)
   

2. Install Jruby

   $ rbenv install jruby-9.3.9.0
   $ rbenv local jruby-9.3.9.0
   

   Note: If the version you are looking for is not listed with rbenv install -l, try upgrading the ruby-build:

   $ brew update && brew upgrade ruby-build
   

   or

   $ cd ~/.rbenv/plugins/ruby-build && git pull && cd -
   

3. Install Bundler

   $ gem install bundler