Cocaine causing hangs on gif uploads

[hugogameiro]

I have been running into a problem where gif uploads stop working when several Mastodon instances share the same host server.

After digging into this, I notice that adding 'loglevel' => 'warning' to /app/models/media_attachment.rb would solve the problem.

Then, I found the source of the problem: thoughtbot/cocaine#96 and tested this PR thoughtbot/cocaine#97 that solves the problem.

As currently Paperclip-av-transcoder still hardcodes Cocaine https://github.com/ruby-av/paperclip-av-transcoder/blob/master/lib/paperclip/paperclip_processors/transcoder.rb#L78 and is not using Terrapin, the Cocaine PR is the one that solved it. Although the same PR has been also pushed to thoughtbot/terrapin#5

[Gargron]

Fixed in #9368

[hugogameiro]

In case someone reaches this issue, I ended up using the forked version of thoughtbot/terrapin#5 because randomly this was causing media upload failures, getting jobs stuck in Sidekiq and I couldn't find another solution.

Other issues that I reported and that were affected by this: #12088 #12812 #9368

Observations: could only repeat the issue with Docker (both local and remote object storage) on servers where multiple instances were hosted.

The 'loglevel' => 'warning' in /app/models/media_attachment.rb is not needed if running this fork.