Rails/Delayed_Job: Restarting delayed job still brings up outdated errors

I had a delayed_job error in an email I was sending ('user' value not found)

I removed the user field from the mailer view, restarted the passenger instance (touch tmp/restart.txt), restarted the delayed_job worker (script/delayed_job restart) and assumed everything would be good to go.

But - I'm still getting the same error message when I send a new mail process to delayed job. (Just to reiterate, this is not the existing error messages st开发者_如何学JAVAaying in the database - when I send a new mail, the same error comes up)

So, it seems delayed job isn't "restarting" quite as much as I'd like it to restart. Any ideas how I can flush out whatever needs flushing?

Getting workers to properly restart has long been an issue because of Delayed Job's reliance on the Daemons gem. You can read all about it here:

https://github.com/collectiveidea/delayed_job/issues/3

What's worked for me is to use the ghazel-daemons gem, as discussed in the thread.