Abort Ruby Reaper when sidekiq queues are full#690
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This is an attempt to resolve #670 .
This change is quite blunt - it silently returns from the ruby reaper if queues are longer than an arbitrary number (1,000 jobs). I'm conscious this may not be ideal for all use cases, but there are a lot of settings already. In my experience, the performance of the reaper degrades so much in these circumstances, it's not worth running, and it will occupy resources you could be using to clear that queue!
If there's anything I missed or further changes from a stylistic or architectural perspective that might help, just let me know and I'll be happy to work on this some more.