Question

I recently start using JRuby in my Rails 2.3 webapp. Since then, I have been experiencing slowness in my rspec tests… the test are taking too long to run since I switched to JRuby.

While using MRI, I never bothered to use spork in order to run my tests faster, but now I need to speed up the execution of my test.

First, I tried spork, but I did’t worked out because:

1. spork 0.9 RC supports jruby, but does not support rails 2.3
   (it only supports rails 3)
2. spork 0.8 supports rails 2.3, but does not support jruby I think it uses fork(), the spork-0.8 gem won’t event
   install on jruby).

I tried to run my tests on jruby, rails 2.3 and spork 0.9 rc, but it didn’t worked, in fact there was a warning message saying that spork 0.9 rc only supports rails >= 3.0

Then I tried nailgun, I installed the nailgun gem in my jruby environment (gem install nailgun) and started the nailgun server (ruby –ng-server at the root of my app).
Then I run one of my specs (ruby –ng -S spec spec/lib/importacao_atividades_spec.rb). The first time I executed the spec, it went just fine, but after that it kept raising RuntimeError: invalid runtime

Check the trace:

RuntimeError: invalid runtime
       require at org/jruby/RubyKernel.java:1038
       require at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/activesupport-2.3.10/lib/active_support/dependencies.rb:184
        (root) at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/mysql-2.8.1/lib/mysql.rb:3
       require at org/jruby/RubyKernel.java:1038
       require at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/mysql-2.8.1/lib/mysql.rb:68
          each at org/jruby/RubyArray.java:1602
       require at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/bundler-1.0.12/lib/bundler/runtime.rb:66
          each at org/jruby/RubyArray.java:1602
       require at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/bundler-1.0.12/lib/bundler/runtime.rb:55
       require at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/bundler-1.0.12/lib/bundler.rb:120
     load_gems at /Users/razenha/Projects/Pro/portaltrademarketing/config/boot.rb:116
       process at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/rails-2.3.10/lib/initializer.rb:164
          send at org/jruby/RubyKernel.java:2052
           run at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/rails-2.3.10/lib/initializer.rb:113
        (root) at /Users/razenha/Projects/Pro/portaltrademarketing/config/environment.rb:12
       require at org/jruby/RubyKernel.java:1038
       require at /Users/razenha/.rvm/rubies/jruby-1.6.1/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:29
        (root) at /Users/razenha/Projects/Pro/portaltrademarketing/config/environment.rb:47
       require at org/jruby/RubyKernel.java:1038
       require at /Users/razenha/.rvm/rubies/jruby-1.6.1/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:29
        (root) at /Users/razenha/Projects/Pro/portaltrademarketing/spec/spec_helper.rb:1
          load at org/jruby/RubyKernel.java:1063
    load_files at ./spec/lib/importacao_atividades_spec.rb:15
          each at org/jruby/RubyArray.java:1602
    load_files at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/rspec-1.2.9/lib/spec/runner/example_group_runner.rb:14
  run_examples at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/rspec-1.2.9/lib/spec/runner/options.rb:132
           run at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/rspec-1.2.9/lib/spec/runner/command_line.rb:9
        (root) at /Users/razenha/.rvm/gems/jruby-1.6.1/gems/rspec-1.2.9/bin/spec:5
          load at org/jruby/RubyKernel.java:1063
        (root) at /Users/razenha/.rvm/gems/jruby-1.6.1/bin/spec:19

So I am really stuck here. Anyone know how can I fix the nailgun issue? If not, is there an alternative? Is it possible to use spork in jruby and rails 2.3?

Answer 1

Oh… Looks like jruby does not like an older version of the Redis gem. Updated my Resque/Redis gem version and it worked.