https://community.cloudera.com/t5/Support-Questions/How-to-convert-unix-timestamp-to-datetime-in-Apache-NiFi/m-p/224750#M186614 <P>in your place I would have:</P><UL> <LI>convert record to JSON not to CSV </LI><LI>use EvaluateJsonPath to set the attribute from the JSON in the contentFile</LI><LI>use updateAttribute to transform datetime and user</LI><LI>use ReplaceText to replace all contentFile with the altered attribute</LI><LI>write the contentFile to FS</LI></UL> Tue, 24 Apr 2018 18:50:03 GMT isoardi 2018-04-24T18:50:03Z