Échec de la mise à jour lors de la migration

Soutien Installation
1

Bonjour,

Nous essayons de mettre à jour une très ancienne installation de Discourse (v1.2.4) vers la dernière version v2.3.1. Nos premières migrations de test utilisant la v2.2.0 se sont déroulées de manière surprenante et le processus de migration s’est terminé sans aucun problème.
Mais maintenant, nous tentons d’exécuter cela dans les étapes finales contre la v2.3.1 et nous obtenons l’erreur suivante :

PG::UniqueViolation: ERROR:  duplicate key value violates unique constraint "idx_unique_rows"
DETAIL:  Key (action_type, user_id, target_topic_id, target_post_id, acting_user_id)=(15, 1140990, 9346002, 9431164, 419835) already exists.
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.0.2/lib/patches/db/pg.rb:110:in `async_exec'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.0.2/lib/patches/db/pg.rb:110:in `async_exec'
(eval):24:in `async_exec'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/mini_sql-0.2.2/lib/mini_sql/postgres/connection.rb:118:in `run'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/mini_sql-0.2.2/lib/mini_sql/postgres/connection.rb:90:in `exec'
/var/www/discourse/plugins/discourse-solved/plugin.rb:64:in `block in activate!'
/var/www/discourse/lib/plugin/instance.rb:328:in `block in notify_after_initialize'
/var/www/discourse/lib/plugin/instance.rb:326:in `each'
/var/www/discourse/lib/plugin/instance.rb:326:in `notify_after_initialize'
/var/www/discourse/config/application.rb:292:in `each'
/var/www/discourse/config/application.rb:292:in `block in <class:Application>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:69:in `block in execute_hook'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:62:in `with_execution_control'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:67:in `execute_hook'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:52:in `block in run_load_hooks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:51:in `each'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/lazy_load_hooks.rb:51:in `run_load_hooks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application/finisher.rb:75:in `block in <module:Finisher>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `instance_exec'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:32:in `run'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:61:in `block in run_initializers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/initializable.rb:60:in `run_initializers'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:361:in `initialize!'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/railtie.rb:190:in `public_send'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/railtie.rb:190:in `method_missing'
/var/www/discourse/config/environment.rb:7:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:337:in `require_environment!'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-5.2.3/lib/rails/application.rb:520:in `block in run_tasks_blocks'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rake-12.3.2/exe/rake:27:in `<top (required)>'
/var/www/discourse/bin/bundle:5:in `load'
/var/www/discourse/bin/bundle:5:in `<main>'
Tasks: TOP => db:migrate => db:load_config => environment
(See full trace by running task with --trace)

Cela semble être causé par “20120816050526_add_unique_constraint_to_user_actions.rb” et si je regarde dans la table de base de données “schema_migrations”, il semble que cela ait déjà été appliqué. Comme cette migration semble avoir été ajoutée en 2012.

Avez-vous des idées sur la raison pour laquelle “bundle exec rake db:migrate” exécute des migrations déjà appliquées ou sur ce que nous faisons de mal ?
Je sais que la version source est assez ancienne, mais comme mentionné, nous avons déjà obtenu des résultats réussis.

Cordialement

2

I’ve misinterpreted this error. So sorry for the confusion. Obviously it has nothing to do with the mentioned migration-file.
Anyway, there seems to be an existing index for an entry in user_actions. So I checked that with:

SELECT *
FROM user_actions
WHERE action_type=15
    AND user_id=1140990
    AND target_topic_id=9346002
    AND target_post_id=9431164
    AND acting_user_id=419835;

This query gives me 0 Results. So there must be an index without a corresponding dataset.

3

When I’ve had similar problems I’ve deleted the thing that it was trying to duplicate. That’s likely not very helpful.

Or maybe make sure that you were in read-only when you make the backup?

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4

Or maybe make sure that you were in read-only when you make the backup?

Yes maybe that’s the problem. We’ve created the dump while the database was in use. Worked at the first try. I’ll create another one and try again.

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5

Hi. It seemed our user_actions table got corrupted. I could fix that by running VACUUM (VERBOSE,ANALYZE,DISABLE_PAGE_SKIPPING) user_actions. But thanks anyway for your advise!
There where several entries missing from the visibility map which produced duplicated keys.

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