I have my configuration to extract my date/time out of each log record and it's going into the @timestamp successfully.
I ran logstash against my log file and everything imported fine to elasticsearch.
Now I've added a couple records to the bottom of my log file, saved the file and re-run logstash against it. It has re-imported all the records instead of just the two new ones, why is this, and how can I control it. I thought populating the @timestamp would eliminate that from happening.