[Digikam-devel] [digikam] [Bug 349157] New: Album view have random invisible / empty / disappearing previews, messed up selection

[Peter Gervai]

https://bugs.kde.org/show_bug.cgi?id=349157

            Bug ID: 349157
           Summary: Album view have random invisible / empty /
                    disappearing previews, messed up selection
           Product: digikam
           Version: 4.4.0
          Platform: Debian unstable
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Albums View
          Assignee: digikam-devel at kde.org
          Reporter: grin at grin.hu

I have this ongoing problem, doesn't seem to fixing itself, so I try to report
it. (I didn't find any duplicate, but you may find it.)

An album collection contains 30000+ images, plenty of multilevel
subdirectories. It is not filtered, all should be visible. The thumbnails view
is active, scrollable. There are parts where the thumbnails do not show up at
all.  Sometimes when moving the mouse over them they appear and disappear, more
often they will not even appear. Moving by keyboard arrows into the void  jump
to "nowhere", or randomly between the visible and the previous album's
thumbnail. The thumbnails may be visible again after restart and other
thumbnails would disappear. 

There seem to be no relevant message on the console. I have several 
digikam(32006)/digikam (core) Digikam::ThumbnailCreator::createThumbnail:
Cannot create thumbnail for  "/mnt/big/x/x/2013.12/100_1884.jpg"
or 
digikam(32006)/KEXIV2: Cannot load metadata using Exiv2   (Error # 11 : 
/mnt/big/x/x/2013.12/100_1884.jpg: The file contains data of an unknown image
type 
kind of messages for unreadable files, but I guess it should not matter for the
rest of hundred phoos in the same directory.

I do not see any tool for database (sqlite) consistency test or similar.

Reproducible: Always

Steps to Reproduce:
I cannot make a reproduction recipe, it happens at random positions.

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