If we have files in a folder (or prefix) but with no folder object in S3 (so file ending in "/"), then there will be a needless API call to S3 for the existance of a the root object. This will return a 404, and then an attempt will be made to delete the local folder.
It's not the end of the world, but in some configs, too many 404s are suspicious, so this should help reduce the noise.
If we have files in a folder (or prefix) but with no folder object in S3 (so file ending in "/"), then there will be a needless API call to S3 for the existance of a the root object. This will return a 404, and then an attempt will be made to delete the local folder.
It's not the end of the world, but in some configs, too many 404s are suspicious, so this should help reduce the noise.