@edaley  I also recommend upgrading to latest NiFi release to see if this issue persists.  I believe there was a known scheduling on startup bug in Apache NiFi 1.16 that since has been resolved. If you found that the provided solution(s) assisted you with your query, please take a moment to login and click Accept as Solution below each response that helped. Thank you, Matt ... View more

Thank you very much for the response and suggestion. I tried to implement this in our test environment, which resulted in a nifi-app_2023-01-11.log file being created, but nifi-app.log is never created.   I tried changing the timestamp format of fileNamePattern to %d{yyyy-MM-dd_HH_mm} to trigger rollovers every minute. Again, log files including the timestamps are created, but nifi-app.log is not.   I tried uncommenting the <file> line. Now, nifi-app.log is created, but rollover is no longer working - nifi-app.log is the only file that is created.   It feels like I can either get nifi-app.log or rollover working at any one time, but never both at the same time. Any way to get both working at the same time? ... View more