recordObjectLoaderPartQueue
fun recordObjectLoaderPartQueue(@Named(value = "globalMemoryManager") globalMemoryManager: ReservationManager): ResourceReservingPartitionedQueue<PipelineEvent<ObjectKey, ObjectLoaderPartFormatter.FormattedPart>>
Queue between step 1 (format parts) and step 2 (load them): it will hold the actual part bytes and needs to be sized based on the available reserved memory.