How Long Does It Take to Run the Instagram Server Test Suite?

Instagram has a large number of servers and obviously many, many database servers. There's no such thing as like, okay, I'm going to synchronize this code rollout with this database migration. Any change you make has to be backwards and forwards compatible. The good news is that the good news is we have lots of tests. The bad news is a lot of them are slow tests when you have a lot of slow tests.