We have 3 node Elasticsearch cluster . We are using following configuration on three nodes.
discovery.zen.ping.unicast.hosts: ["x", " y","z"]
Elsticsearch version -2.3.4, java - openjdk -8
cluster health is green with three data nodes. index replication factor :1, shards: 5.
In the beginning it was fine but recently we are getting following error while inserting documents into index.
Error: Request Timeout after 30000ms
at null. (/home/ubuntu/search/node_modules/elasticsearch/src/lib/transport.js:365:7)
at Timer.listOnTimeout (timers.js:92:15)
please help me to resolve this problem