The protocol is interesting, and we will provide the TLA+ proof soon.

Are you from the PolarFS team? This paper looks amazing, I'll be sure to give it a thorough read!

I was curious: could you compare and contrast it with what I imagine are it's competitors? Hdfs, ceph, glusterfs etc.

Have you replaced any of those existing systems internally yet?

HDFS isn't really a filesystem.

The main competitors at this scale would be Lustre & GPFS

Yes I am from the PolarFS team. You can read from the paper that we have compared PolarFS with ceph.

Will appreciate some specific examples.

Disclaimer: Not Alibaba employee

Former Alibaba employee: every day.

There's no planning, no communication, tons of underqualified middle management, tons of politics, and a lot of really bad ideas are pushed by HIPPOs.

China is general about 10-15 years behind on software development. Currently Alibaba's big push internally is a framework that essentially resembles EJB 2.1 stateful beans, but built on Spring.

> pushed by HIPPOs

https://whatis.techtarget.com/definition/HiPPOs-highest-paid...: "HiPPO (highest paid person's opinion, highest paid person in the office)"

I guess you are frustrated but most of it sounds like everywhere else. Also I think you are exaggerating. For sure they are not 10-15 years behind. There are some fine ideas and implementation for instance the Pouch container and p2p distribution system, even by Alibaba. Hyper.sh is chinese, too. OpenResty is nice. PingCAP, the makers of TiDB are chinese, as well.

Well, half the time things went down is because the data center hit capacity and someone exploits something in the console to shut down your workloads, which makes for a bunch of fun.