Since this plugin inherits from logstash-output-file, the [multi_receive_encoded from the file output](https://github.com/logstash-plugins/logstash-output-file/blob/master/lib/logstash/outputs/file.rb#L122-L139) gets called instead of this own plugin's `receive` This means this plugin behaves like logstash-output-file in logstash 5.x, **making it useless**. For more reports see: https://discuss.elastic.co/t/elasticsearch-logstash-input-to-csv-output-mapping-question/65837 https://discuss.elastic.co/t/csv-output-plugin-prints-wrong-stuff/65574 https://discuss.elastic.co/t/debugging-csv-output/64901 https://discuss.elastic.co/t/export-from-elasticsearch-to-csv-problem-where-i-am-wrong/65558