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Rake jobs: work gives "PGError: ERROR: SELECT FOR UPDATE / SHARE not allowed in subqueries"

I have changed some changes in my Rails application that include adding a delayed_job gem (which looks AMAZING). To test this, I:

  • ran rails g delayed_job
  • ran rake db:migratewho created the delayed_jobs table
  • restarted rails server(just in case)
  • restarted postgresql service (just in case)
  • ran scripts/delayed_job start
  • completed some tasks for calculating pending tasks.

But nothing happened: / My assignments are in the slowdown assignment table, but locked_atnull (As is last_error).

So, I tried rake jobs:work, which gave a strange Postgres: error
PGError: ERROR: SELECT FOR UPDATE/SHARE is not allowed in subqueries and the following:

$ rake jobs:work
[Worker(host:robert-vaio pid:21217)] Starting job worker
rake aborted!
PGError: ERROR:  SELECT FOR UPDATE/SHARE is not allowed in subqueries
: UPDATE "delayed_jobs" SET locked_at = '2013-02-13 19:53:46.803085', locked_by = 'host:robert-vaio pid:21217' WHERE id IN (SELECT  id FROM "delayed_jobs"  WHERE ((run_at <= '2013-02-13 19:53:46.792619' AND (locked_at IS NULL OR locked_at < '2013-02-13 15:53:46.792639') OR locked_by = 'host:robert-vaio pid:21217') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 1 FOR UPDATE) RETURNING *
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/connection_adapters/postgresql_adapter.rb:1153:in `async_exec'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/connection_adapters/postgresql_adapter.rb:1153:in `exec_no_cache'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/connection_adapters/postgresql_adapter.rb:662:in `block in exec_query'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract_adapter.rb:280:in `block in log'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.12/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract_adapter.rb:275:in `log'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/connection_adapters/postgresql_adapter.rb:661:in `exec_query'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/connection_adapters/postgresql_adapter.rb:1248:in `select'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/database_statements.rb:18:in `select_all'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/query_cache.rb:63:in `select_all'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/querying.rb:38:in `block in find_by_sql'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/explain.rb:33:in `logging_query_plan'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.12/lib/active_record/querying.rb:37:in `find_by_sql'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job_active_record-0.4.1/lib/delayed/backend/active_record.rb:63:in `reserve'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/worker.rb:258:in `reserve_and_run_one_job'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/worker.rb:187:in `block in work_off'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/worker.rb:186:in `times'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/worker.rb:186:in `work_off'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/worker.rb:151:in `block (4 levels) in start'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/worker.rb:150:in `block (3 levels) in start'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:60:in `call'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:60:in `block in initialize'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:65:in `call'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:65:in `execute'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:38:in `run_callbacks'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/worker.rb:149:in `block (2 levels) in start'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/worker.rb:148:in `loop'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/worker.rb:148:in `block in start'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/plugins/clear_locks.rb:7:in `call'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/plugins/clear_locks.rb:7:in `block (2 levels) in <class:ClearLocks>'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:78:in `call'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:78:in `block (2 levels) in add'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:60:in `call'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:60:in `block in initialize'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:78:in `call'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:78:in `block in add'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:65:in `call'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:65:in `execute'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/lifecycle.rb:38:in `run_callbacks'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/worker.rb:147:in `start'
/home/robert/.rvm/gems/ruby-1.9.3-p327/gems/delayed_job-3.0.5/lib/delayed/tasks.rb:9:in `block (2 levels) in <top (required)>'
Tasks: TOP => jobs:work
(See full trace by running task with --trace)

, - , , - , ...!

!

+5
4

postgres - . , , rmosolgo , , " ".

+5

. , Gemfile delayed_job_active_record 0.3.3:

gem 'delayed_job_active_record', '0.3.3'

0.4.1, 12 2012 .

+6

delayed_job, . https://github.com/collectiveidea/delayed_job_active_record/issues/33

There is a delayed_job_active_record branch that works fine with postgres 8.4 and is compatible with rails 4.x

gem 'delayed_job_active_record', :git => 'git@github.com:panter/delayed_job_active_record.git'

It fixes the problem using postgres sql calls without errors.

+2
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I tried with the solution provided by bt Neil Woods, but it showed some authentication problems, then I tried to add the line below with slight changes in the same.

gem 'delayed_job_active_record', :git => 'git://github.com/panterch/delayed_job_active_record.git'

This work, please try this if someone is having problems.

Thank.

+1
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