I have a mongo shards cluster and a mongos instance. These servers are running on MongoDB 3.4.0. When I use mongo shell 3.4.0 to connect to the mongos, I got below output from
mongos> sh.isBalancerRunning() false
but I got a different result when I use mongo shell 3.2.13:
mongos> sh.isBalancerRunning() true
Is this something not compatible between mongo versions? If yes, why other commands work fine just this command doesn't?