conflicts in session storage cause webapp to crash

I deployed to one of the couchdb nodes while I was using the webapp, and then it would not run anymore, with the error below. After I cleared my cookies for the site, then it would work fine. So, I suspect that the session record associated with the cookie had conflicts causing everything to bomb out.

I realize this may be hard to reproduce, but I would have expected conflicts to be a normal part of running couch and i am surprised that if you encounter a conflict the entire app just refuses to run.

vendor/bundle/ruby/1.9.1/gems/rest-client-1.6.7/lib/restclient/abstract_response.rb:48:in `return!'
vendor/bundle/ruby/1.9.1/gems/rest-client-1.6.7/lib/restclient/request.rb:230:in `process_result'
vendor/bundle/ruby/1.9.1/gems/rest-client-1.6.7/lib/restclient/request.rb:178:in `block in transmit'
/usr/lib/ruby/1.9.1/net/http.rb:745:in `start'
vendor/bundle/ruby/1.9.1/gems/rest-client-1.6.7/lib/restclient/request.rb:172:in `transmit'
vendor/bundle/ruby/1.9.1/gems/rest-client-1.6.7/lib/restclient/request.rb:64:in `execute'
vendor/bundle/ruby/1.9.1/gems/rest-client-1.6.7/lib/restclient/request.rb:33:in `execute'
vendor/bundle/ruby/1.9.1/gems/couchrest-1.1.3/lib/couchrest/rest_api.rb:94:in `execute'
vendor/bundle/ruby/1.9.1/gems/couchrest-1.1.3/lib/couchrest/rest_api.rb:50:in `put'
vendor/bundle/ruby/1.9.1/gems/couchrest-1.1.3/lib/couchrest/database.rb:130:in `save_doc'
vendor/bundle/ruby/1.9.1/gems/couchrest_session_store-0.2.2/lib/couchrest/session/document.rb:58:in `save'
vendor/bundle/ruby/1.9.1/gems/couchrest_session_store-0.2.2/lib/couchrest/session/store.rb:63:in `set_session'
vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/session/abstract/id.rb:327:in `commit_session'
vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/session/abstract/id.rb:211:in `context'
vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/session/abstract/id.rb:205:in `call'
vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.15/lib/action_dispatch/middleware/cookies.rb:341:in `call'
vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.15/lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.15/lib/active_support/callbacks.rb:405:in `_run__3865162875900744999__call__2787622531028723229__callbacks'
vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.15/lib/active_support/callbacks.rb:405:in `__run_callback'
vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.15/lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.15/lib/active_support/callbacks.rb:81:in `run_callbacks'
vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.15/lib/action_dispatch/middleware/callbacks.rb:27:in `call'
vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.15/lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.15/lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.15/lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
vendor/bundle/ruby/1.9.1/gems/railties-3.2.15/lib/rails/rack/logger.rb:32:in `call_app'
vendor/bundle/ruby/1.9.1/gems/railties-3.2.15/lib/rails/rack/logger.rb:16:in `block in call'
vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.15/lib/active_support/tagged_logging.rb:22:in `tagged'
vendor/bundle/ruby/1.9.1/gems/railties-3.2.15/lib/rails/rack/logger.rb:16:in `call'
vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.15/lib/action_dispatch/middleware/request_id.rb:22:in `call'
vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/methodoverride.rb:21:in `call'
vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/runtime.rb:17:in `call'
vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.15/lib/active_support/cache/strategy/local_cache.rb:72:in `call'
vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/lock.rb:15:in `call'
vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:136:in `forward'
vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:245:in `fetch'
vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:185:in `lookup'
vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:66:in `call!'
vendor/bundle/ruby/1.9.1/gems/rack-cache-1.2/lib/rack/cache/context.rb:51:in `call'
vendor/bundle/ruby/1.9.1/gems/railties-3.2.15/lib/rails/engine.rb:484:in `call'
vendor/bundle/ruby/1.9.1/gems/railties-3.2.15/lib/rails/application.rb:231:in `call'
vendor/bundle/ruby/1.9.1/gems/railties-3.2.15/lib/rails/railtie/configurable.rb:30:in `method_missing'
/usr/lib/ruby/vendor_ruby/phusion_passenger/rack/request_handler.rb:96:in `process_request'
/usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_request_handler.rb:516:in `accept_and_process_next_request'
/usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_request_handler.rb:274:in `main_loop'
/usr/lib/ruby/vendor_ruby/phusion_passenger/rack/application_spawner.rb:206:in `start_request_handler'
/usr/lib/ruby/vendor_ruby/phusion_passenger/rack/application_spawner.rb:171:in `block in handle_spawn_application'
/usr/lib/ruby/vendor_ruby/phusion_passenger/utils.rb:479:in `safe_fork'
/usr/lib/ruby/vendor_ruby/phusion_passenger/rack/application_spawner.rb:166:in `handle_spawn_application'
/usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
/usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
/usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server.rb:180:in `start'
/usr/lib/ruby/vendor_ruby/phusion_passenger/rack/application_spawner.rb:129:in `start'
/usr/lib/ruby/vendor_ruby/phusion_passenger/spawn_manager.rb:253:in `block (2 levels) in spawn_rack_application'
/usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server_collection.rb:132:in `lookup_or_add'
/usr/lib/ruby/vendor_ruby/phusion_passenger/spawn_manager.rb:246:in `block in spawn_rack_application'
/usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server_collection.rb:82:in `block in synchronize'
:10:in `synchronize'
/usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
/usr/lib/ruby/vendor_ruby/phusion_passenger/spawn_manager.rb:244:in `spawn_rack_application'
/usr/lib/ruby/vendor_ruby/phusion_passenger/spawn_manager.rb:137:in `spawn_application'
/usr/lib/ruby/vendor_ruby/phusion_passenger/spawn_manager.rb:275:in `handle_spawn_application'
/usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
/usr/lib/ruby/vendor_ruby/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
/usr/share/phusion-passenger/helper-scripts/passenger-spawn-server:99:in `'

(from redmine: created on 2013-12-11, closed on 2013-12-17)

• Relations:
  • relates #8090 (closed)