title: Nifi: Check CSV file for row updates, then ingest
body: <p>Usually in our environment, when someone has new data to be ingested, they generate a new CSV file, which Nifi will pick up from an SFTP. However I have a new case where the source's CSV file sits on a shared drive and their application adds new rows to it when there are updates.</p>
  
  <p>Is there a way that Nifi can monitor this CSV file for when new rows have been added? And can it subsequently ingest only the new data? I think it has something like this for relational databases, but I haven't seen anything similar for files. Thanks in advance.</p>