>>Avoid split brain problem

Please correct me if my understanding is not right. Definition of split brain at

https://www.elastic.co/guide/en/elasticsearch/guide/1.x/_important_configuration_changes.html says that “presence of 2 masters in 1 cluster” is split brain. So if you have discovery.zen.minimum_master_nodes=1, then it can cause split brain in a cluster as more than 1 nodes can elect themselves as master.