User deletion problem, returns "Error 500" on delete all posts

Had issue with one user that requested deletion of their account. When before account deletion, in user administration part I was attempting to use Delete all posts I got Error 500 after confirming the action.

For now I deleted posts that I could find manually, as user had fairly small amount of posts no issues there. But I still see that Posts created show 10+ for this account. And of course I cant delete the account. Nor do I see anymore posts by this user.

In /logs I see two log entries for the event (as far as I can tell)

Message

ActiveRecord::InvalidForeignKey (PG::ForeignKeyViolation: ERROR:  update or delete on table "reviewables" violates foreign key constraint "fk_rails_2fe5fa5cd0" on table "reviewable_notes"
DETAIL:  Key (id)=(7064) is still referenced from table "reviewable_notes".
)
Message

Failed to handle exception in exception app middleware : ActiveRecord::InvalidForeignKey : PG::ForeignKeyViolation: ERROR:  update or delete on table "reviewables" violates foreign key constraint "fk_rails_2fe5fa5cd0" on table "reviewable_notes"
DETAIL:  Key (id)=(7064) is still referenced from table "reviewable_notes".


Backtrace

rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in `exec'
rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in `async_exec'
activerecord-8.0.4/lib/active_record/connection_adapters/postgresql/database_statements.rb:167:in `perform_query'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:556:in `block (2 levels) in raw_execute'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:1017:in `block in with_raw_connection'
activesupport-8.0.4/lib/active_support/concurrency/null_lock.rb:9:in `synchronize'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:986:in `with_raw_connection'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:555:in `block in raw_execute'
activesupport-8.0.4/lib/active_support/notifications/instrumenter.rb:58:in `instrument'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract_adapter.rb:1137:in `log'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:554:in `raw_execute'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:591:in `internal_execute'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:166:in `exec_delete'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb:214:in `delete'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract/query_cache.rb:27:in `delete'
activerecord-8.0.4/lib/active_record/relation.rb:1045:in `block in delete_all'
activerecord-8.0.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:422:in `with_connection'
activerecord-8.0.4/lib/active_record/connection_handling.rb:312:in `with_connection'
activerecord-8.0.4/lib/active_record/relation.rb:1032:in `delete_all'
/var/www/discourse/app/models/user.rb:1322:in `delete_posts_in_batches'
/var/www/discourse/app/controllers/admin/users_controller.rb:76:in `delete_posts_batch'
actionpack-8.0.4/lib/action_controller/metal/basic_implicit_render.rb:8:in `send_action'
actionpack-8.0.4/lib/abstract_controller/base.rb:215:in `process_action'
actionpack-8.0.4/lib/action_controller/metal/rendering.rb:193:in `process_action'
actionpack-8.0.4/lib/abstract_controller/callbacks.rb:261:in `block in process_action'
activesupport-8.0.4/lib/active_support/callbacks.rb:120:in `block in run_callbacks'
/var/www/discourse/app/controllers/application_controller.rb:442:in `block in with_resolved_locale'
i18n-1.14.7/lib/i18n.rb:353:in `with_locale'
/var/www/discourse/app/controllers/application_controller.rb:442:in `with_resolved_locale'
activesupport-8.0.4/lib/active_support/callbacks.rb:129:in `block in run_callbacks'
/var/www/discourse/app/controllers/application_controller.rb:1088:in `ensure_dont_cache_page'
activesupport-8.0.4/lib/active_support/callbacks.rb:129:in `block in run_callbacks'
activesupport-8.0.4/lib/active_support/callbacks.rb:140:in `run_callbacks'
actionpack-8.0.4/lib/abstract_controller/callbacks.rb:260:in `process_action'
actionpack-8.0.4/lib/action_controller/metal/rescue.rb:27:in `process_action'
actionpack-8.0.4/lib/action_controller/metal/instrumentation.rb:76:in `block in process_action'
activesupport-8.0.4/lib/active_support/notifications.rb:210:in `block in instrument'
activesupport-8.0.4/lib/active_support/notifications/instrumenter.rb:58:in `instrument'
activesupport-8.0.4/lib/active_support/notifications.rb:210:in `instrument'
actionpack-8.0.4/lib/action_controller/metal/instrumentation.rb:75:in `process_action'
actionpack-8.0.4/lib/action_controller/metal/params_wrapper.rb:259:in `process_action'
activerecord-8.0.4/lib/active_record/railties/controller_runtime.rb:39:in `process_action'
actionpack-8.0.4/lib/abstract_controller/base.rb:152:in `process'
actionview-8.0.4/lib/action_view/rendering.rb:40:in `process'
rack-mini-profiler-4.0.1/lib/mini_profiler/profiling_methods.rb:90:in `block in profile_method'
actionpack-8.0.4/lib/action_controller/metal.rb:252:in `dispatch'
actionpack-8.0.4/lib/action_controller/metal.rb:335:in `dispatch'
actionpack-8.0.4/lib/action_dispatch/routing/route_set.rb:67:in `dispatch'
actionpack-8.0.4/lib/action_dispatch/routing/route_set.rb:50:in `serve'
actionpack-8.0.4/lib/action_dispatch/routing/mapper.rb:32:in `block in <class:Constraints>'
actionpack-8.0.4/lib/action_dispatch/routing/mapper.rb:62:in `serve'
actionpack-8.0.4/lib/action_dispatch/journey/router.rb:53:in `block in serve'
actionpack-8.0.4/lib/action_dispatch/journey/router.rb:133:in `block in find_routes'
actionpack-8.0.4/lib/action_dispatch/journey/router.rb:126:in `each'
actionpack-8.0.4/lib/action_dispatch/journey/router.rb:126:in `find_routes'
actionpack-8.0.4/lib/action_dispatch/journey/router.rb:34:in `serve'
actionpack-8.0.4/lib/action_dispatch/routing/route_set.rb:908:in `call'
/var/www/discourse/lib/middleware/omniauth_bypass_middleware.rb:35:in `call'
/var/www/discourse/lib/middleware/crawler_hooks.rb:11:in `call'
rack-2.2.21/lib/rack/tempfile_reaper.rb:15:in `call'
rack-2.2.21/lib/rack/conditional_get.rb:40:in `call'
rack-2.2.21/lib/rack/head.rb:12:in `call'
actionpack-8.0.4/lib/action_dispatch/http/permissions_policy.rb:38:in `call'
/var/www/discourse/lib/content_security_policy/middleware.rb:12:in `call'
/var/www/discourse/lib/middleware/anonymous_cache.rb:420:in `call'
/var/www/discourse/lib/middleware/csp_script_nonce_injector.rb:12:in `call'
/var/www/discourse/config/initializers/008-rack-cors.rb:14:in `call'
rack-2.2.21/lib/rack/session/abstract/id.rb:266:in `context'
rack-2.2.21/lib/rack/session/abstract/id.rb:260:in `call'
actionpack-8.0.4/lib/action_dispatch/middleware/cookies.rb:706:in `call'
actionpack-8.0.4/lib/action_dispatch/middleware/callbacks.rb:31:in `block in call'
activesupport-8.0.4/lib/active_support/callbacks.rb:100:in `run_callbacks'
actionpack-8.0.4/lib/action_dispatch/middleware/callbacks.rb:30:in `call'
actionpack-8.0.4/lib/action_dispatch/middleware/debug_exceptions.rb:31:in `call'
actionpack-8.0.4/lib/action_dispatch/middleware/show_exceptions.rb:32:in `call'
logster-2.20.1/lib/logster/middleware/reporter.rb:40:in `call'
/var/www/discourse/lib/middleware/default_headers.rb:13:in `call'
railties-8.0.4/lib/rails/rack/logger.rb:41:in `call_app'
railties-8.0.4/lib/rails/rack/logger.rb:29:in `call'
/var/www/discourse/config/initializers/100-quiet_logger.rb:20:in `call'
/var/www/discourse/config/initializers/100-silence_logger.rb:29:in `call'
actionpack-8.0.4/lib/action_dispatch/middleware/request_id.rb:34:in `call'
/var/www/discourse/lib/middleware/enforce_hostname.rb:23:in `call'
rack-2.2.21/lib/rack/method_override.rb:24:in `call'
actionpack-8.0.4/lib/action_dispatch/middleware/executor.rb:16:in `call'
rack-2.2.21/lib/rack/sendfile.rb:127:in `call'
rack-mini-profiler-4.0.1/lib/mini_profiler.rb:191:in `call'
message_bus-4.4.1/lib/message_bus/rack/middleware.rb:60:in `call'
/var/www/discourse/lib/middleware/request_tracker.rb:321:in `call'
actionpack-8.0.4/lib/action_dispatch/middleware/remote_ip.rb:96:in `call'
/var/www/discourse/lib/middleware/overload_protections.rb:22:in `call'
/var/www/discourse/lib/middleware/processing_request.rb:14:in `call'
railties-8.0.4/lib/rails/engine.rb:535:in `call'
railties-8.0.4/lib/rails/railtie.rb:226:in `public_send'
railties-8.0.4/lib/rails/railtie.rb:226:in `method_missing'
rack-2.2.21/lib/rack/urlmap.rb:74:in `block in call'
rack-2.2.21/lib/rack/urlmap.rb:58:in `each'
rack-2.2.21/lib/rack/urlmap.rb:58:in `call'
unicorn-6.1.0/lib/unicorn/http_server.rb:634:in `process_client'
unicorn-6.1.0/lib/unicorn/http_server.rb:739:in `worker_loop'
unicorn-6.1.0/lib/unicorn/http_server.rb:547:in `spawn_missing_workers'
unicorn-6.1.0/lib/unicorn/http_server.rb:143:in `start'
unicorn-6.1.0/bin/unicorn:128:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load'
/var/www/discourse/vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `<main>'

What are these reviewable_notes and reviewable_notes tables? It it something linked to moderators Review queue?

Any comments or maybe some one has encountered something similar?

I thin this may be a recently introduced bug.

Can you check if the user has any flagged content in the review queue, and if there is any note on those? If so, try to delete that first before continuing.

1 Like

Thanks! Your guess was spot on. User had few flagged posts by moderators and one of them had a note added. After deleting the note I could then successfully delete user all users posts and user it self.

By the way, is the bug already fixed in default branch? Maybe it’s time for updates.

EDIT: note on version/build for reference of any others that maybe encounter similar issue: v2026.1.0-latest mid-January container build on default tests-passed branch.

1 Like

I dont think so, will make an internal bug report.

Glad the workaround solved it!