I just upgraded to ELK 6 and updated my Logstash mapping template to the default one shipped with Logstash 6.
When I use this the Elasticsearch deprecation log show me this warning:
[2018-02-27T09:40:46,871][WARN ][o.e.d.i.m.MapperService ] [default] mapping is deprecated since it is not useful anymore now that indexes cannot have more than one type
My question: Why is the new default Logstash mapping template using deprecated stuff?