My app consists of receiving emails with image attachments from its users so I have been employing the MMS2R gem and Fetcher. Every 60 seconds the app goes to the email server to fetch emails. Under Rails 2.1.1 things worked fine - when I received an email, the email was fetched, parsed and saved to the database. However I needed to upgrade to Rails 2.2.2 for unrelated reasons and now I get the following error in my log when the app tries to save to the database. Emailpic is just the model in the database. "Emailpic Columns (0.0ms) Mysql::Error: MySQL server has gone away: SHOW FIELDS FROM `emailpics`" Does anyone know what changed between 2.1.1 and 2.2.2 to cause this to happen?
on 2009-03-03 04:56
on 2009-03-03 06:32
This was solved by the fine guys at Engine Y.. I added the following lines to my environmemnt.rb: ActiveRecord::Base.allow_concurrency = true ActiveRecord::Base.verification_timeout = 10 And just before I do a fetch I have this line: Emailpic.verify_active_connections!
on 2009-03-09 06:57
Adeel, This worked for you with activerecord 2.2.2 ? The Engineyard guys suggested the same thing to me, but we're getting this deprecation working.. DEPRECATION WARNING: ActiveRecord::Base.verification_timeout= has been deprecated and no longer has any effect. Please remove all references to verification_timeout=.. (called from verification_timeout= at /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:106) Tung Adeel A. wrote: > This was solved by the fine guys at Engine Y.. > I added the following lines to my environmemnt.rb: > > ActiveRecord::Base.allow_concurrency = true > ActiveRecord::Base.verification_timeout = 10 > > And just before I do a fetch I have this line: > > Emailpic.verify_active_connections!
on 2009-03-09 07:24
ic, youre doing a Emailpic.verify_active_connections! So, thats what is probably reestablishing the connection....
on 2009-03-09 07:25
I just wonder if there's a more automated way of doing this, instead of manually have to check the connection every time we do a mysql query...
on 2009-03-21 23:21
I'm getting these MySQL server has gone away on SHOW FIELDS too. I've spent a fair bit of effort trying to figure out what's going on, with no success. All we've determined is it seems to have a higher chance of happening after some idle time. I can usually make it happen by hitting an ajax page with many requests at once (just spamming the ajax). Any ideas welcome. On Mar 2, 10:56 pm, Adeel A. <firstname.lastname@example.org>
on 2009-03-26 03:32
I've had some success with the mysql_retry_lost_connection gem.