title: NiFi - Issue when running multiple data source ingestion pipelines concurrently
body: <p>When multiple flow files executed in a putSFTP processor at almost the same time, the files was placed into wrong destination.
  The sftp usernames are different, and come from flow file attributes. The first flow file goes to correct destination while the other 3 files go to the sftp destination of first file.</p>
  <p>We are using Apache NiFi 1.12.1</p>