In my NiFi flow, I am using a FetchSFTP processor to get files from a server. The first day I configured the processor it was working fine and was able to connect to the server and retrieve the files. However since then I have been getting the following error from the processor:
java.io.IOException: Failed to obtain connection to remote host due to com.jcraft.jsch.JSchException: session is down
No changes have been made to the processor's configuration and no changes have been made to the SFTP server. I am also still able to connect to the SFTP server via WinSCP; I am only having an issue with the FetchSFTP processor.
If anyone could provide some help towards debugging this issue it would be greatly appreciated! Thanks!