I am running ES 2.1.2, Logstash 2.2. My cluster is 1 query node, 3 master node, 10 data nodes. I have 16GB allocated to ES. They are all dedicated nodes. My shard allocation is 5, with 1 replica. Data per index is about 450GB including the replica. Today I added repository nfs mount to my servers, and had to upgrade path.repo parameter which would require ES restart. ES restart every time is causing re-initialization of the shards. Any pointers what setting in my config may cause this issue?
So config snippet from my data nodes