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自從我上次部署到我的應用程序的生產服務器，我得到一個奇怪的錯誤鎖定的互斥鎖，我無法重現：錯誤ThreadError：嘗試解鎖由另一線程
ERROR ThreadError: Attempt to unlock a mutex which is locked by another thread FATAL
» 11:01:11.996 2013-07-02 09:01:11.895493+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/lock.rb:20:in `unlock'
» 11:01:12.095 2013-07-02 09:01:11.989101+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/lock.rb:20:in `ensure in call'
» 11:01:12.194 2013-07-02 09:01:12.089815+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/lock.rb:21:in `call'
» 11:01:12.276 2013-07-02 09:01:12.182996+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.13/lib/action_dispatch/middleware/static.rb:63:in `call'
» 11:01:12.372 2013-07-02 09:01:12.277529+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:136:in `forward'
» 11:01:12.482 2013-07-02 09:01:12.371598+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:245:in `fetch'
» 11:01:12.565 2013-07-02 09:01:12.467375+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:185:in `lookup'
» 11:01:12.651 2013-07-02 09:01:12.561334+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:66:in `call!'
» 11:01:12.752 2013-07-02 09:01:12.654779+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:51:in `call'
» 11:01:12.850 2013-07-02 09:01:12.748562+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-timeout-0.0.4/lib/rack/timeout.rb:16:in `block in call'
» 11:01:12.942 2013-07-02 09:01:12.841536+00:00 app web.1 - - /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/timeout.rb:69:in `timeout'
» 11:01:13.044 2013-07-02 09:01:12.934504+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-timeout-0.0.4/lib/rack/timeout.rb:16:in `call'
» 11:01:13.146 2013-07-02 09:01:13.028302+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:479:in `call'
» 11:01:13.221 2013-07-02 09:01:13.123097+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application.rb:223:in `call'
» 11:01:13.335 2013-07-02 09:01:13.219949+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/content_length.rb:14:in `call'
» 11:01:13.418 2013-07-02 09:01:13.316886+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/rack/log_tailer.rb:17:in `call'
» 11:01:13.518 2013-07-02 09:01:13.410892+00:00 app web.1 - - /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/handler/webrick.rb:59:in `service'
» 11:01:13.602 2013-07-02 09:01:13.508204+00:00 app web.1 - - /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
» 11:01:13.699 2013-07-02 09:01:13.603374+00:00 app web.1 - - /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
» 11:01:13.799 2013-07-02 09:01:13.696575+00:00 app web.1 - - /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
我主辦heroku上的單個測功機。我在Rails版本Rails 3.2.13上運行。
之前請求期間沒有併發任務（rake task，rails console，...）在此dyno上運行。
有沒有人知道問題可能來自哪裏？
謝謝！
問候！
「自從我上次部署到生產服務器」 - 好了，誰安裝了/在服務器上更新什麼:) –
我部署的新版本中，課程。但是我沒有改變什麼會導致這種錯誤。關於多線程的配置沒有任何更新。我知道，在這種情況下很難提供幫助。但也許有人有類似的問題，並已經解決了。 – Sebastian
好的。我們通過遷移到另一個網絡服務器（'unicorn'）來解決這個問題。 – Sebastian