Been doing some testing with mesos 1.11.0 and zookeeper's "dynamic reconfiguration" capability. https://zookeeper.apache.org/doc/r3.6.3/zookeeperReconfig.html
Seems prima facie like mesos-master can handle a dynamic reconfig of the zk ensemble up to the point where a new set of participants has been added to the ensemble and the old participants have been demoted to non-voting followers. But when the non-voting follower processes are terminated the master logs seem to indicate that the masters keep trying and failing to reconnect to the old zk leader, even though they've apparently received updates with the new ensemble participants. Anybody have any insight into this? Any plans to support zk dynamic reconfiguration in the future? Seems like it could make for easier O/S maintenance of one's master/zk cluster hosts. -Dan
