Logstash errors after upgrading to filebeat-6.3.0

[nxhack]

Logstash errors on filebeat received apache logs

After an upgrade from 6.2 to 6.3, I am now getting indexing errors for apache logs. [2018-06-13T16:12:18,782][WARN ][logstash.outputs.elasticsearch] Could not index event to Elasticsearch. {:status=>400, :action=>["index", {:_id=>nil, :_index=>"apache-2018.06.13", :_type=>"apache", :_routing=>nil}, #LogStash::Event:0x4db324f8], :response=>{"index"=>{"_index"=>"apache-2018.06.13", "_type"=>"apache", "_id"=>"tidr-2MB8IC994mx1_US", "status"=>400, "error"=>{"type"=>"mapper_parsing_exception", "reas…

Since this is a duplicate discussion, this case is due to the specification change of filebeat, so let's move on here.