I have a doubt about JVM usage with Elasticsarch & Kibana. For example, I have an Elasticsearch 1.7.5 and Kibana 3. In a normal conditions Elasticsearch has 30% heap usage, when I use Kibana and I try to obtain information, jvm heap usage increase to 60% or 70%.
When I stop using Kibana, this JVM heap usage remains, so, how long time Elasticsearch
needs to free this JVM? Is there any way to accelerate it?
Another question, it would be advisable to use Elasticsearch 2.x or 5.x to improve it?
Thanks in advance ,