[digikam] [Bug 323718] Rebuild all thumbnails does not get rid of all thumbnails first

Posted by Marcel Wiesweg on
URL: http://digikam.185.s1.nabble.com/digikam-Bug-323718-New-Rebuild-all-thumbnails-does-not-get-rid-of-all-thumbnails-first-tp4665027p4667309.html

https://bugs.kde.org/show_bug.cgi?id=323718

--- Comment #11 from Marcel Wiesweg <[hidden email]> ---
Thumbnails are primarily loaded via hash/file size. So in principle, whenever
file contents or file size change, there can be a leftover entry in the
database. These can only be found via "go through thumbnail db -> check if it
exists in main db".
Today, when digikam changes file content, the thumbnail reuse/replacement is
often managed, but probably not from all places. It cannot be managed when an
external tool does the change. So a classical case for a garbage collector.

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