If I have logstash reading csv files, with fields in a particular order, and then I change the order in both the new csv files and the logstash config file, does logstash and/or elasticsearch care?
If I also add new fields into the csv records, does logstash or elasticsearch care?
In both cases, elasticsearch will have records with both the old and new order and fields.
I change the order in both the new csv files and the logstash config file, does logstash and/or elasticsearch care?
No.
If I also add new fields into the csv records, does logstash or elasticsearch care?
Assuming you adjust Logstash's csv filter for the new columns, no.
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