I would hope the garage would make sure they find out and are 110% sure what the problem was to cause this. For this sort of failure on a 10k mile engine, something must have been wrong from the start.
If they end up rebuilding the big end without finding the root problem, in 20k miles you'll be back in the garage again.
If they end up rebuilding the big end without finding the root problem, in 20k miles you'll be back in the garage again.