High memory consumption for RAFS DDMS when uploading big file x10

Whenever we have a big file +600MB the RAFS will increase the consumption of memory x3, therefore Kubernetes will kill/restart the container and the connection will be reset, leading to upload error or "unhealthy upstream" by istio.

With a file of about ~600MB the memory consumption increases up to 6GB and CPU to 1.5. It would worth to check why the RAFS-DDMS increases this much the memory consumption.