Ritesh H Shukla

@symious please take a look at https://github.com/apache/ozone/pull/4324

I need to do another round of going over the usage and memory model.

@szetszwo can you please address the review comments?

@szetszwo do you plan to continue with this PR? can you please rebase?

@DaveTeng0 There is one bit of information we are waiting for, we need to measure the peak OM performance for Hadoop RPC vs GRPC and then this can be merged...

@xBis7 we did some initial tests and OM peak performance is about the same between the 2. Can you rebase this change?

@symious can you please rebase, your branch is 400+ commits behind master.

@Xushaohong can you please rebase and resolve conflicts?

@Xushaohong this looks like a pretty straightforward change, please address the minor nits.

@errose28 can you please rebase?