Re: [delayed_job] Jobs getting processed by multiple workers

[David Genord II]

What version of delayed_job_active_record?

On Tue, Apr 23, 2013 at 10:56 PM, Ibrahim Awwal <ibrahi...@gmail.com> wrote:

Hi,

I've been using Delayed Job for a while on a project, and recently I've been having issues where the same task gets done multiple times, I am assuming by multiple workers. This seems quite wrong, but I'm not sure how to go about debugging this issue. I haven't changed how I'm using DJ, basically every place I use it I just have an Object.delay.do_something_later call. Most of the time I see one new model as expected as the result of my task, but sometimes I see 2, 3, or even 4 copies of the same thing and I am sure I only called delayed job once.

I am running delayed_job 3.0.5 with Rails 3.2.13, Postgresql 9.1 on Ubuntu 12.04 (on EC2). I have also installed posgtresql-contrib for hstore. Packages are fully up to date. My workers are on the same machine as the database/application server. I have 8 of them running. My server is an EC2 m1.xlarge instance. How can I figure out what is actually happening here? It seems that the locking mechanism is somehow getting bypassed which really doesn't make any sense to me. Any help is appreciated. Thanks!

-Ibrahim

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[Ibrahim Awwal]

I was on 0.4.3, upgraded to 0.4.4 yesterday after I noticed the issues. It's been happening for a few weeks. It hasn't happened since the upgrade for what it's worth, but I don't know if that's really related.