I want to check If I can use open JRE with latest ElasticSearch and logstash. Is lastest ElasticSearch and logstash tested with latest open JRE? We started developing our product using ElasticSearch and logstash using Oracle's JRE+JDK but then it appeared that Oracle's JRE+JDK would not be freely available for use under their BCL license. On ElasticSearch page (on elastic.co, its stated that JDK form oracle is recommended.) I would really appreciate if someone can shed some more light on this. Can someone confirm if Oracle JRE would be free to use/distribute with ElasticSearch?
PS: Its really confusing that on ElasticSearch page, JDK is mentioned as recommended whereas JRE is really the basic requirement instead of JDK as I have read on other forums to run ElasticSearch. Why is JDK recommended then?