I have a question. When transferring data to elasticsearch with Logstash, can I see which line of the csv file it is in? For example, the field named path shows me which csv file I am in. So, is there a field or a method that shows which line I am in the csv file?
When Logstash is reading a file in tail mode it creates sincedb file which is used to store checkpoint data while reading is in progress, format is explained here. What you can see is byte offset, I don't think there is a way to see exact line, you would need to find that out yourself from the byte offset.