[digikam] [Bug 320121] New: if running maintenance, "rebuild thumbnails", digiKam hangs endlessly

[Axel Krebs]

https://bugs.kde.org/show_bug.cgi?id=320121

            Bug ID: 320121
           Summary: if running maintenance, "rebuild thumbnails", digiKam
                    hangs endlessly
    Classification: Unclassified
           Product: digikam
           Version: 3.1.0
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Maintenance
          Assignee: [hidden email]
          Reporter: [hidden email]

From time to time, I do maintennce on my pics collection.

If I run "rebuild thumbnails", digiKam hangs (more than half a day) without any
progress.

I set "skip existing pictures" (or so) to save time

Other submenus within maintenance tool seem to work properly

Reproducible: Always

Steps to Reproduce:
1. start digiKam
2. run maintenance, rebuild all thumbnails (skip checked directories or so)
3. do something nice: otherwise you'd to wait endlessly to finish the thumbnail
process.
Actual Results:  
- hangers
- waste of time, but not success
- meagre usability beacuse of missing feedback information from
sub-processes!!!

Expected Results:  
thumbnails-maintenace should rung run through reliably in background, using as
less as possible resources

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=320121

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]

--- Comment #1 from Gilles Caulier <[hidden email]> ---
from a console where you start digiKam, what didi you see as debug messages ?

Gilles Caulier

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[Axel Krebs]

https://bugs.kde.org/show_bug.cgi?id=320121

--- Comment #2 from Axel Krebs <[hidden email]> ---
Am 22.05.2013 07:19, schrieb Gilles Caulier:

> https://bugs.kde.org/show_bug.cgi?id=320121
>
> Gilles Caulier <[hidden email]> changed:
>
>             What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                   CC|                            |[hidden email]
>
> --- Comment #1 from Gilles Caulier <[hidden email]> ---
> from a console where you start digiKam, what didi you see as debug messages ?
>
> Gilles Caulier
>

Hi Gilles,

RESULT:

ak@quadro:~$ digikam
Fontconfig warning: "/etc/fonts/conf.d/50-user.conf", line 9: reading
configurations from ~/.fonts.conf is deprecated.
QSqlDatabasePrivate::removeDatabase: connection 'ConnectionTest' is
still in use, all queries will cease to work.
digikam(8538)/digikam (core) Digikam::CollectionScanner::scanAlbum:
Folder does not exist or is not readable:  "/data/quadro_bilder/Heimseite"

Hope this helps?


Axel

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=320121

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
   Version Fixed In|                            |3.3.0
         Resolution|---                         |FIXED
      Latest Commit|                            |http://commits.kde.org/digi
                   |                            |kam/62125c25374b0caf2d6a381
                   |                            |2d1d34812ede8a6fd

--- Comment #3 from Gilles Caulier <[hidden email]> ---
Git commit 62125c25374b0caf2d6a3812d1d34812ede8a6fd by Gilles Caulier.
Committed on 28/07/2013 at 08:00.
Pushed by cgilles into branch 'master'.

Maintenance Manager : complete rewrite of maintenance tools handling.
Instead to use signal provided by tool to know if job is done, use progress
manager signal.
Store instance of each tools in d private container instead stack to provide a
better check of stage under progress.
Patch ScanController to provide a better feedback to NewItemsFinder, in all
scan mode. Add a new method to only call core code to perform
scan WITHOUT to show a progress dialog. In fact progress manager as already all
in place to give user feedback about progress...
Patch FaceManagement maintenance tool to indicate that face are detected and
recognized.
Move status progress bar with ProgresManager code, as this one is fully
relevant.

Marcel, I would to drop fully DProgressDialog code, which is only used now to
ScanController, with all first run step to collect all information from image
managed by database. I remember that in 2.x serie, you have patched digiKam to
only perform first run scan in background when albumgui is show. I'm right ?
At now, this feature sound fonctionnal some time, but it's not fully
reproducible.
If you take a look how Google Picasa work, you will see that main DB
referencing run in background when main GUI is displayed. A progress indication
is show in statusbar.
User can start to work with collected items in real time and don't need to wait
a long time that all referencing is done through a small progress dialog...
Look this entry for ex : 320359.
What do you think about?
Related: bug 295256, bug 295255, bug 297614, bug 306282

CCMAIL: [hidden email]

FIXED-IN: 3.3.0

M  +1    -1    CMakeLists.txt
M  +19   -7    digikam/database/scancontroller.cpp
M  +7    -0    digikam/database/scancontroller.h
M  +1    -1    libs/progressmanager/progressmanager.cpp
R  +1    -0    libs/progressmanager/statusprogressbar.cpp [from:
libs/widgets/common/statusprogressbar.cpp - 098% similarity]
R  +1    -0    libs/progressmanager/statusprogressbar.h [from:
libs/widgets/common/statusprogressbar.h - 096% similarity]
M  +2    -3    utilities/maintenance/duplicatesfinder.cpp
M  +1    -1    utilities/maintenance/facedetector.cpp
M  +1    -2    utilities/maintenance/fingerprintsgenerator.cpp
M  +1    -1    utilities/maintenance/maintenancedlg.cpp
M  +117  -77   utilities/maintenance/maintenancemngr.cpp
M  +14   -8    utilities/maintenance/maintenancemngr.h
M  +3    -1    utilities/maintenance/maintenancetool.cpp
M  +24   -20   utilities/maintenance/newitemsfinder.cpp
M  +0    -1    utilities/maintenance/newitemsfinder.h
M  +1    -2    utilities/maintenance/thumbsgenerator.cpp

http://commits.kde.org/digikam/62125c25374b0caf2d6a3812d1d34812ede8a6fd

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