Hi, I have a question related to replication. I have a cluster of 7 elastic search machines with number of replicas defined as 2. machines are amazon aws instances. I had to shutdown one instance and the reallocation of about 2000 shards to other instances took almost 10 hours. So, the question I have - is there any documentation, explaining how this works? As far as I understand the replica shards are already sitting on the nodes, which are stayed alive. What the process of "reallocation" actually does?
Thank you in advance