If taking advantage of the path mapping for local files with an extractor, and the 'filepath' returned for a file in a dataset doesn't have the same filename as 'filename', it may not be possible make use of the local file due to name differences.

For example, if using the clowder store mounted locally, and trying to avoid unnecessary downlaods, mapping the 'filepath' returned from clowder prevents the download but has the "wrong" file name; it's not named the same as the 'filename' field. This causes filename-based processing to fail - for example, when looking for a .tif file

By creating a link containing the name from the 'filename' field processing will be successful.