Łączę się z pewnymi zmianami w mojej aplikacji Rails, które obejmują dodanie klejnotu delayed_job (który wygląda NIESAMOWITE). Aby przetestować go, I:zadań rake: praca daje "PGError: ERROR: SELECT dla UPDATE/SHARE jest niedozwolone w podkwerendach"
- prowadził
rails g delayed_job
- prowadził
rake db:migrate
, który stworzył tabelę delayed_jobs - wznowiona
rails server
(na wszelki wypadek) - wznowiona usługę postgresql (na wszelki wypadek)
- wykonał
scripts/delayed_job start
- wykonał niektóre zadania, aby naliczyć opóźnione zadania
Ale nic się nie stało:/Moje zadania znajdują się w tabeli opóźnionych zadań, ale locked_at
ma wartość null (podobnie jak last_error
).
Więc próbowałem rake jobs:work
, który wydał dziwny PostgreSQL błąd:
PGError: ERROR: SELECT FOR UPDATE/SHARE is not allowed in subqueries
i śledzenia:
$ 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)
nie mogę dowiedzieć się, co się stało - i bardziej zaskakująco, mogę znaleźć nikogo innego zadając to pytanie ....!
Dzięki za pomoc!
Krótka historia - zaktualizowałem do PostgreSQL 9.1 i błąd zniknął. – rmosolgo