[Backgroundrb-devel] Error while connecting to the backgroundrb server

Raghu Srinivasan raghu.srinivasan at gmail.com
Sun Dec 28 02:58:54 EST 2008


Intermittently, I see this error about an error connecting to the
backgroundrb server. This happens when, in a loop, I submit dozens,
sometimes a few hundred jobs in the B/G.
Any idea why this happens and how to avoid it?
Raghu
--------------------------------------------------------------------------------------------------------------------------------------
BackgrounDRb::BdrbConnError (Error while connecting to the backgroundrb
server):
    /vendor/plugins/backgroundrb/lib/backgroundrb.rb:94:in `dump_object'
    /vendor/plugins/backgroundrb/lib/backgroundrb.rb:110:in `ask_work'

 /vendor/plugins/backgroundrb/lib/backgroundrb/rails_worker_proxy.rb:28:in
`method_missing'
    /app/controllers/logins_controller.rb:60:in `batch_refresh'

 /usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/inflector.rb:257:in
`each_with_index'
    /app/controllers/logins_controller.rb:56:in `each'
    /app/controllers/logins_controller.rb:56:in `each_with_index'
    /app/controllers/logins_controller.rb:56:in `batch_refresh'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in
`send'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in
`perform_action_without_filters'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:697:in
`call_filters'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:689:in
`perform_action_without_benchmark'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in
`perform_action_without_rescue'
    /usr/lib/ruby/1.8/benchmark.rb:293:in `measure'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in
`perform_action_without_rescue'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/rescue.rb:199:in
`perform_action_without_caching'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/caching.rb:678:in
`perform_action_without_newrelic_trace'

 /usr/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in
`cache'

 /usr/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/query_cache.rb:8:in
`cache'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/caching.rb:677:in
`perform_action_without_newrelic_trace'

 /vendor/plugins/newrelic_rpm/lib/newrelic/agent/instrumentation/action_controller.rb:63:in
`perform_action'
    /vendor/plugins/newrelic_rpm/lib/newrelic/agent/method_tracer.rb:38:in
`trace_method_execution'

 /vendor/plugins/newrelic_rpm/lib/newrelic/agent/instrumentation/action_controller.rb:52:in
`perform_action'
    /vendor/plugins/newrelic_rpm/lib/newrelic/agent/method_tracer.rb:38:in
`trace_method_execution'

 /vendor/plugins/newrelic_rpm/lib/newrelic/agent/instrumentation/action_controller.rb:46:in
`perform_action'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in
`send'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in
`process_without_filters'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:685:in
`process_without_session_management_support'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/session_management.rb:123:in
`process'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:388:in
`process'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:171:in
`handle_request'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115:in
`dispatch'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:126:in
`dispatch_cgi'

 /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:in
`dispatch_without_newrelic'

 /vendor/plugins/newrelic_rpm/lib/newrelic/agent/instrumentation/dispatcher.rb:41:in
`dispatch'

 /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel/rails.rb:76:in
`process'

 /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel/rails.rb:74:in
`synchronize'

 /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel/rails.rb:74:in
`process'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel.rb:159:in
`process_client'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel.rb:158:in
`each'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel.rb:158:in
`process_client'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel.rb:285:in
`run'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel.rb:285:in
`initialize'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel.rb:285:in
`new'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel.rb:285:in
`run'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel.rb:268:in
`initialize'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel.rb:268:in
`new'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel.rb:268:in
`run'

 /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel/configurator.rb:282:in
`run'

 /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel/configurator.rb:281:in
`each'

 /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel/configurator.rb:281:in
`run'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/mongrel_rails:128:in `run'

 /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/../lib/mongrel/command.rb:212:in
`run'
    /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/mongrel_rails:281
    /usr/bin/mongrel_rails:19:in `load'
    /usr/bin/mongrel_rails:19
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