Bug 451697

Summary:	Why does digikam do anything to Thumbnails if tags are changed?
Product:	[Applications] digikam	Reporter:	Steve Franks <stevef48>
Component:	Thumbs-Engine	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	wishlist	CC:	caulier.gilles, metzpinguin
Priority:	NOR
Version First Reported In:	7.7.0
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed/Implemented In:	7.7.0
Sentry Crash Report:

Description Steve Franks 2022-03-19 18:33:47 UTC

SUMMARY
***
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***
I am not reporting a bug!

This is just me being curious. I have a similar problem Mikkel Kludder, many of my images have hierarchical keywords in IPTC. Everytime I read their metadata I end up with multiple copies of the same keyword in different parts of my hierarchy. All I did was consolidate one of these keywords on 41 images. Digikam is now running a process titled "Thumbnails", which has stopped me doing anything for several minutes. What is this process actually doing? These images already have thumbnails.

STEPS TO REPRODUCE
1.  Change Tags on several files
2.  
3. 

OBSERVED RESULT
Digikam displays a message to show that it haas written the keywords, but the process indicator remains active and clicking on its up arrow shows that it is processing Thumbnails. No other actions are allowed until all processes have finished.

EXPECTED RESULT
Digikam writes metadata and is then ready to perform another task.
BTW The display telling one to wait until tasks have finished is inconsistent. It is possible to change tags on images, but not possible to move, or merge tags.
SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

Comment 1 Maik Qualmann 2022-03-19 18:49:14 UTC

Is this also related to this problem? Bug 448223

A running move/merge tag action must be completed before a new one can be started. 

Maik

Comment 2 Steve Franks 2022-03-19 18:52:54 UTC

OK, some processes seem to be queued. Is it not possible to queue Move/Merge?
That isn't a complaint, I'm curious and happy to wait for processes to complete.
The thumbnail process doesn't appear every time.

Comment 3 Maik Qualmann 2022-03-19 19:03:15 UTC

No, a merge/move cannot be queued at the moment, it is partly explained in Bug 448223.

Which language do you use? There is only the process "Thumbs" in the maintenance tool, but "Thumbnails" is unknown to me.

Maik

Comment 4 Maik Qualmann 2022-03-19 19:14:54 UTC

The following messages come into question for tag apply/delete move/merge:

"Applying metadata"
"Assigning image tags"
"Removing image tags"
"Writing metadata to files"
"Synchronizing image metadata with database"

Maik

Comment 5 Maik Qualmann 2022-03-19 19:57:12 UTC

Did you press "F5"? The maintenance tool for rebuilding the thumbnails is started here. But also in your language en_GB (from the DebugView log of other bug reports) only "Thumbs" is written as process name.

Maik

Comment 6 Maik Qualmann 2022-03-20 06:18:01 UTC

I think all questions are answered, otherwise Bug 448223 already exists. I'm closing here.

Maik

Comment 7 Steve Franks 2022-03-20 11:05:57 UTC

(In reply to Maik Qualmann from comment #5)
> Did you press "F5"? The maintenance tool for rebuilding the thumbnails is
> started here. But also in your language en_GB (from the DebugView log of
> other bug reports) only "Thumbs" is written as process name.
> 
> Maik

No I didn't press F5.