[NIFI-3583] PutFile should attempt to replace files atomically

• Type: Improvement
• Status: Patch Available
• Priority: Trivial
• Resolution: Unresolved
• Affects Version/s: 0.7.1, 1.1.1
• Component/s: Extensions
• Environment: On Windows, NIO2's Files.move operation may not allow atomic file replacement, in which case it would have to fall back to the existing method.
• Assignee: Gray Gwizdz
• Reporter: Eugene Hart
• Created: 09/Mar/17 20:51
• Updated: 12/Dec/18 12:23

Description

A PutFile configured with the "replace" conflict resolution strategy will first delete any existing file and then move the new temporary file into place. This causes there to be a small period of time where the file does not exist at all. This could cause problems with other processes relying on this file to always exist.