@Phil_I_AM  Always best tot start a new question rather than commenting on an old post.  Will get you better traction that way from the community. The reason NiFi does not have native processor that can handle rar files is because there does not appear to be java native libraries available to do this. https://issues.apache.org/jira/browse/NIFI-8391   You may consider filtering and writing your rar files to a flow specific directory on disk and then use the ExecuteStreamCommand processor to unpack that rar in that directory.  You could have a new flow that uses the listFile (configured to ignore files with rar extension) and FetchFile processor to monitor that directory for new files and consume them for further processing. 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

@Phil_I_AM You should be able to use InvokeHttp to build any REST api calls.      https://nifi.apache.org/docs/nifi-docs/components/org.apache.nifi/nifi-standard-nar/1.17.0/org.apache.nifi.processors.standard.InvokeHTTP/index.html   The approach I recommend is to have a fully working POSTMAN api call with know url, get/post parameters, and required authentication headers.   With this working call and required details, work to duplicate the setup in InvokeHttp until operational. ... View more