Julien Castiaux
b940d1c25f
Create a new cron job with a server action that sleeps 10 seconds, while the cron is executing, triggers the cron. The trigger fails because the implicit select performed by the foreign key on the ir_cron conflicts with the lock acquired to execute the job. When one access a record that references another table record with a foreign key, a `KEY SHARE` lock try to acquire the referenced record in order to prevent other transactions from removing it. The only lock that conflicts with `KEY SHARE` is `UPDATE`. When a job is acquired for execution, an `UPDATE` lock type was set on the row. This ensure no other worker will select the same job but it also prevent triggering the job as the trigger mechanism involve inserting rows in the `ir_cron_trigger` table which have a foreign key to the `ir_cron` table. The `UPDATE` row lock was replaced by `NO KEY UPDATE` row lock. Just like `UPDATE` the new row lock conflicts with all other locks BUT the `KEY SHARE` lock that is acquired by foreign keys. The new lock type still prevent multiple workers from acquiring the same cron simultaneously but allow concurrent insertion of new triggers. closes odoo/odoo#64424 Task: 2368911 Signed-off-by: Julien Castiaux <Julien00859@users.noreply.github.com>
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