jaricftw

> @kangnanli the ping API in adminHandler has no return type (void), so I cannot return a failure for JVM issues. So I'd prefer keeping it this way for now....

> [Doc](https://docs.google.com/document/d/1riS-E1tUl8fg_1EOhfqNS3VutcHj_tA_77TSwS7rYP8/edit#) .. > > We only check / reset the followers who are not replicating. So if the shardmap is stale, we will try to reset only the erroneous...

Posting a discussion from slack so we don't lose the context: With replication mode mutated on a per-request/write basis, it seems we can easily run into race conditions like: 1....