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Upgrade to Rails 3.2.2: How to solve the 'undefined for Syck :: DomainType' method associated with Delayed Job's remembered memory?

I am running Ruby on Rails 3.2.2 from 3.1.0. I have a problem

undefined method send_register_email\' for #<Syck::DomainType:0x0000012d2346b8>\n/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/performable_mailer.rb:6:in perform ...

with the DelayedJob gem that many others have tried to solve: Some have done it successfully, others have not. I am in the latter category, also if I tried all the solutions I found on the internet.

Currently in my Gemfile I am:

gem 'rails', '3.2.2'
gem "rake"
...
gem 'delayed_job_active_record'
...

Before updating Rails, in my Gemfile I had:

gem 'rails', '~> 3.1.0'
gem "rake"
...
# I also used the following statement by running Rails 3.2.2 but it didn't work.
gem 'delayed_job'
...

To send emails, in my controllers, I use the code link:

::Users::Mailer.delay.send_register_email(@user)

In my file APPLICATION_ROOT/app/mailers/users/mailer.rb

I have:

class Users::Mailer < ActionMailer::Base
  ...

  def send_register_email(user)
    ...
  end
end

Before upgrading to Rails 3.2.2, everything worked as well. Now I am getting the error mentioned above in the introductory text. How can I try to fix the lag issue?

I noticed that there delayed_job_active_record

must be a column named "queue" in the database table linked to (see the "About Gory" section in the official documentation for more information). However, since I used it gem 'delayed_job'

, it was present in this database table. Maybe a problem?

Another thing I noticed is the following (but I think this is not a problem at the moment):

$ rake jobs:work
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/01/04/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /<ABSOLUTE_PATH>/Rakefile:7)
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/01/04/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /<ABSOLUTE_PATH>/Rakefile:7)
[Worker(host:<MY_USER>.local pid:76826)] Starting job worker

Below is what is present in the DelayedJob database table column last_error

:

{undefined method `send_register_email' for #<Syck::DomainType:0x0000010228a840>
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/performable_mailer.rb:6:in `perform'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/backend/base.rb:94:in `block in invoke_job'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `call'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `block in initialize'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `call'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `execute'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:38:in `run_callbacks'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/backend/base.rb:91:in `invoke_job'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:162:in `block (2 levels) in run'
/<ABSOLUTE_PATH>/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/timeout.rb:58:in `timeout'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:162:in `block in run'
/<ABSOLUTE_PATH>//.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/benchmark.rb:310:in `realtime'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:161:in `run'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:218:in `block in reserve_and_run_one_job'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `block in initialize'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `execute'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:38:in `run_callbacks'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:218:in `reserve_and_run_one_job'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:146:in `block in work_off'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:145:in `times'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:145:in `work_off'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:117:in `block (4 levels) in start'
/<ABSOLUTE_PATH>//.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/benchmark.rb:310:in `realtime'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:116:in `block (3 levels) in start'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `block in initialize'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `execute'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:38:in `run_callbacks'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:113:in `block (2 levels) in start'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:112:in `loop'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:112:in `block in start'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/plugins/clear_locks.rb:7:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/plugins/clear_locks.rb:7:in `block (2 levels) in <class:ClearLocks>'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:78:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:78:in `block (2 levels) in add'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `block in initialize'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:78:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:78:in `block in add'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `execute'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:38:in `run_callbacks'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:111:in `start'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/tasks.rb:9:in `block (2 levels) in <top (required)>'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/<ABSOLUTE_PATH>//.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/bin/rake:19:in `load'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/bin/rake:19:in `<main>'
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2 answers


We managed to solve Syck / Psych weirdness in our application by making sure that installing the YAML parser on Syck was the absolute first task at initialization. The reason you sometimes run into problems is that the DelayedJob initializes differently depending on which YAML box you are using, and if the parser changes during initialization, the DelayedJob is probably wrong.

Add this to the very top boot.rb

and see if it helps:



require 'yaml'
YAML::ENGINE.yamler = 'syck'
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If you are using bundler try prefixing the script or rake task with "bundle exec" for example.

bundle exec script/delayed_job -n 2 start


He did the trick for us.

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