We had a bug at a previous employer that would cause many of the main database replicas to crash. We isolated it to a collision in the code that serializes quer

We had a bug at a previous employer that would cause many of the main database replicas to crash. We isolated it to a collision in the code that serializes query predicates, which happened about one time out of 2^32ish queries. So yes, relatively rare occurrences do get investigated.