Workers getting broken after some time

Kamil Kukura kamil.kukura at gmail.com
Tue Sep 6 09:59:21 EDT 2011


I have strange error that happens after couple of hours. Some instances 
start to respond on any request with status code 500. Log file 
unicorn.stderr.log gets populated with this error:

app error: undefined method `each' for nil:NilClass (NoMethodError)
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.2/lib/rack/utils.rb:267:in 
`initialize'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.2/lib/rack/utils.rb:261:in 
`new'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.2/lib/rack/utils.rb:261:in 
`new'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.2/lib/rack/chunked.rb:16:in 
`call'
/usr/local/lib/ruby/gems/1.9.1/gems/actionpack-2.3.14/lib/action_controller/dispatcher.rb:106:in 
`call'
/usr/local/lib/ruby/gems/1.9.1/gems/rails-2.3.14/lib/rails/rack/static.rb:31:in 
`call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.2/lib/rack/urlmap.rb:47:in 
`block in call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.2/lib/rack/urlmap.rb:41:in 
`each'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.2/lib/rack/urlmap.rb:41:in 
`call'
/usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.1.1/lib/unicorn/http_server.rb:528:in 
`process_client'
/usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.1.1/lib/unicorn/http_server.rb:600:in 
`worker_loop'
/usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.1.1/lib/unicorn/http_server.rb:485:in 
`spawn_missing_workers'
/usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.1.1/lib/unicorn/http_server.rb:496:in 
`maintain_worker_count'
/usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.1.1/lib/unicorn/http_server.rb:270:in 
`join'
/usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.1.1/bin/unicorn_rails:209:in 
`<top (required)>'
/usr/local/bin/unicorn_rails:19:in `load'
/usr/local/bin/unicorn_rails:19:in `<main>'


Application is running on rails 2.3.14/ruby 1.9.2p290 and maybe it has 
something to do with plugin being used, that is template_streaming 
(https://github.com/oggy/template_streaming)



More information about the mongrel-unicorn mailing list