They publicly track their resillency efforts here https://www.elastic.co/guide/en/elasticsearch/resiliency/master/index.html https://www.elastic.co/guide/en/el

They publicly track their resillency efforts here https://www.elastic.co/guide/en/elasticsearch/resiliency/master/index.html https://www.elastic.co/guide/en/elasticsearch/resiliency/mas... >7 its become quite reliable. It comes down to how you manage and maintain the cluster