Bug 503060 - Cached thumbnails become uncached
Summary: Cached thumbnails become uncached
Status: REPORTED
Alias: None
Product: digikam
Classification: Applications
Component: Faces-Engine (other bugs)
Version First Reported In: 8.7.0
Platform: Microsoft Windows Microsoft Windows
: NOR normal
Target Milestone: ---
Assignee: Digikam Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-04-20 13:38 UTC by HubMiner
Modified: 2025-11-16 13:16 UTC (History)
1 user (show)

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Description HubMiner 2025-04-20 13:38:58 UTC 
In People views, cached thumbnails quickly become uncached, possibly after any face assignments or changing hierarchy of that tag.

'Maintenance - Rebuild Thumbnails' works for a long time but does not address this.
Comment 1 caulier.gilles 2025-04-20 13:41:14 UTC 
The thumbnail cache in memory if limited of course...
Comment 2 HubMiner 2025-04-22 03:45:53 UTC 
I understood the thumbails are coming from their own database - since each thumbnail is taking a few seconds to regenerate, it looks like DK forgot those faces generated.  So I likely used wrong terms in the description - the thumbnails are not just uncached, they are missing and have to be regenarated.
Comment 3 HubMiner 2025-07-15 03:17:51 UTC 
The issue exists in 8.7
Comment 4 HubMiner 2025-11-16 13:16:30 UTC 
Overall V8.8 GUI is much improved, thank you!!!

But the process of verifying face assignments is very slow - after assigning many photos:
* Must load all faces to review before re-training.
* Only way I found: spam PAGE-UP via autoclicker.
* autoclicker automated 15–120s delay per page: hours total before I can start reviewing.

Fix Needed
Add "Load All Faces" button with progress bar.
This will be essential for trust in face assignments.