similar issue to #39

[etherbob]

Rails 4.0.3 and Ruby 2.1.0 if I switch back to Ruby 2.0 or earlier it goes away. I will add more detail as I get it but wanted to let you know it's not an isolated issue.

[mnelson]

Thanks, provide as much relevant info as possible and I'll revisit.

[etherbob]

log

SystemStackError (stack level too deep):
  actionpack (4.0.3) lib/action_dispatch/middleware/reloader.rb:70


  Rendered /Users/user/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.0.3/lib/action_dispatch/middleware/templates/rescues/_source.erb (0.5ms)
  Rendered /Users/user/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.0.3/lib/action_dispatch/middleware/templates/rescues/_trace.erb (0.7ms)
  Rendered /Users/user/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.0.3/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.6ms)
  Rendered /Users/user/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.0.3/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (13.7ms)

framework trace

activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:190:in `block in wait_poll'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:181:in `loop'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:181:in `wait_poll'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:136:in `block in poll'
/Users/user/.rbenv/versions/2.1.0/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:146:in `synchronize'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:134:in `poll'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:423:in `acquire_connection'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:356:in `block in checkout'
/Users/user/.rbenv/versions/2.1.0/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:355:in `checkout'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:265:in `block in connection'
/Users/user/.rbenv/versions/2.1.0/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:264:in `connection'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:546:in `retrieve_connection'
activerecord (4.0.3) lib/active_record/connection_handling.rb:79:in `retrieve_connection'
activerecord (4.0.3) lib/active_record/connection_handling.rb:53:in `connection'
activerecord (4.0.3) lib/active_record/query_cache.rb:51:in `restore_query_cache_settings'
activerecord (4.0.3) lib/active_record/query_cache.rb:43:in `rescue in call'
activerecord (4.0.3) lib/active_record/query_cache.rb:32:in `call'
activerecord (4.0.3) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call'
activerecord (4.0.3) lib/active_record/migration.rb:369:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.0.3) lib/active_support/callbacks.rb:373:in `_run__3371203646912226988__call__callbacks'
activesupport (4.0.3) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.3) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/reloader.rb:64:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.0.3) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.0.3) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.0.3) lib/active_support/tagged_logging.rb:67:in `block in tagged'
activesupport (4.0.3) lib/active_support/tagged_logging.rb:25:in `tagged'
activesupport (4.0.3) lib/active_support/tagged_logging.rb:67:in `tagged'
railties (4.0.3) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
rack (1.5.2) lib/rack/runtime.rb:17:in `call'
activesupport (4.0.3) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/static.rb:64:in `call'
rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
railties (4.0.3) lib/rails/engine.rb:511:in `call'
railties (4.0.3) lib/rails/application.rb:97:in `call'
rack (1.5.2) lib/rack/content_length.rb:14:in `call'
thin (1.6.2) lib/thin/connection.rb:86:in `block in pre_process'
thin (1.6.2) lib/thin/connection.rb:84:in `catch'
thin (1.6.2) lib/thin/connection.rb:84:in `pre_process'
thin (1.6.2) lib/thin/connection.rb:53:in `process'
thin (1.6.2) lib/thin/connection.rb:39:in `receive_data'
eventmachine (1.0.3) lib/eventmachine.rb:187:in `run_machine'
eventmachine (1.0.3) lib/eventmachine.rb:187:in `run'
thin (1.6.2) lib/thin/backends/base.rb:73:in `start'
thin (1.6.2) lib/thin/server.rb:162:in `start'
rack (1.5.2) lib/rack/handler/thin.rb:16:in `run'
rack (1.5.2) lib/rack/server.rb:264:in `start'
railties (4.0.3) lib/rails/commands/server.rb:84:in `start'
railties (4.0.3) lib/rails/commands.rb:76:in `block in <top (required)>'
railties (4.0.3) lib/rails/commands.rb:71:in `tap'
railties (4.0.3) lib/rails/commands.rb:71:in `<top (required)>'
bin/rails:4:in `require'
bin/rails:4:in `<main>'

[etherbob]

db config with a few details removed:

development:
  adapter: makara_mysql2
  encoding: utf8
  database: app_name
  pool: 5
  username: •
  password: •
  host: db1
  makara:

    # the following are default values
    blacklist_duration: 30
    master_ttl: 5
    sticky: true
    rescue_connection_failures: true

    # list your connections with the override values (they're merged into the top-level config)
    # be sure to provide the role if master, role is assumed to be a slave if not provided
    connections:
      - role: master
        host: db1
      - host: db2
        username: •
        password: •
      - host: db3
        username: •
        password: •

[etherbob]

I can trigger it by putting in bogus credentials or taking one of my test databases down.

Using v0.2.2

[mnelson]

I'll setup a similar environment soon but can you try doing rescue_connection_failures: false and see if it still occurs? Basically just trying to determine if it's the instantiation of a connection, the reconnection, or both. Based on your last comment I'm assuming it's both.

[etherbob]

get similar error with rescue_connection_failures: false

actionpack (4.0.5) lib/action_dispatch/middleware/reloader.rb:70

Also tried updating to rails 4.0.5 to see if that helped in any way, but no dice. Everything continues to work in 2.0.0-p353 and 1.9.3-p448.

[etherbob]

just to be clear:

When running with ruby 2.1.0 and rails 4.0.3 or rails 4.0.5
when a connection fails for any reason, it enters that loop.

[kithokit]

i looks like got the same issue...

[mnelson]

@etherbob v0.3.0.rc1 is released. If that release fixes these issues please close the issue. If not, let me know. Thanks