Upgrading from Rails 5.2.4 to 6.1.6 with Delayed Job - Job's not being picked up

[bh8ur8js]

Working config

ruby 2.6.2

rails 5.2.4

delayed_job 4.1.8

#config/environments/development.rb

config.active_job.queue_adapter = :delayed_job
config.active_job.queue_name_prefix = "ukcil_#{Rails.env}"

#config/application.rb
config.active_job.queue_adapter = :delayed_job

#Started with

bin/delayed_job -n 1 start

#Environment vairables are

RAILS_ENV=development
QUEUES=*

#config/initializers/delayed_job.rb

Delayed::Worker.queue_attributes = {
  mailers_h: {priority: 0},
  mailers_l: {priority: 10},
  general_h: { priority: 20 },
  general_l: { priority: 30 }
}

After upgrading to

Ruby 2.7.2
Rails 6.1.6
delayed_job 4.1.10

everything is working except for delayed_job .

Jobs are being queued correctly, appearing delayed_job_web front end view, as before

The delayed_job process is running, as per activity monitor, but the jobs are not being picked up or process.

I just can't see what's changed here. It's not showing any errors.

I thought it would be something esoteric that was causing it. I think it might be, I can find no documentation about a similar problem. Any help with be gratefully received.

[bh8ur8js]

One last thing, if I open a Rails Console

q = Delayed::Worker.new(quiet: false)
q.start

It works. The polling starts and works off the queue.

However when running as a process

bundle exec bin/delayed_job --queues=*  run

It doesn't seem to starting the Worker Object

[joelcahalan]

I am having this issue also. Did you find a solution?

[bh8ur8js]

I have not. It's very frustrating.

It's seem so random. We can test all the mechanisms are working. It's just not starting.

Are you using macOS or Linux ? Something has changed in the delayed _job executable.

I can't find anything.

[joelcahalan]

I have no problem on Rails 6.0 but when I try using Rails 6.1 I get the behavior you describe. I am using macos. I don't have time right now to debug.

[bh8ur8js]

I would love to but it's beyond my skill level.

[johngronow]

I am seeing the exact same behaviour.

Running Ruby 3.0.4. Rails 6.0.5.1 and Delayed Job 4.1.10, everything works perfectly.

Upgrade to Rails 6.1.6.1 with the same versions of Ruby and Delayed Job and workers no longer pick up jobs, except when run from the console.

Can anyone suggest a fix?

Update: This is actually working in production, so my problem is only in my development environment. The difference is that my development machine is a Mac (macOS Monterey 12.4) whereas production is deployed on Ubuntu (20.04 LTS).

[bh8ur8js]

@johngronow That's positive. I had a hunch or rather I was hoping that this would be the case with it working in production.

[martinstreicher]

Did anyone find the cause of this?

[bh8ur8js]

Ultimately this is issue is specific to macOS. Upgrading to other version sorts it and in production it’s Linux where the issue doesn’t happen. It would be interesting to know why it is happening but the benefit would be low.

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[martinstreicher]

@bh8ur8js When you say "Upgrading to other version", are you talking about a newer Delayed Job? We are also seeing it in Ubuntu.

[dgm]

I'm seeing this with Rails 7.1, running development mode on OS X. delayed_job run just sits there, I don't see any indication that it's even polling the database for jobs.