The bug

The METADATA_EXTRACTION job sets metadataExtractedAt. If one clears the Extract Metadata queue, the subsequent LINK_LIVE_PHOTOS job will not execute as they are appended to the queue after the METADATA_EXTRACTION job. A restart of Extract Metadata job on 'missing' assets does not pick up the linkage jobs but completely ignores them.

Background: I have been wondering why the Extract Metadata queue does not decrease in size and have been stopping, clearing, and restarting the queue multiple times as it looked like a bug. What actually happens is that for each processed METADATA_EXTRACTION job, a LINK_LIVE_PHOTOS job is appended to the same queue. Thus, on restart, the queue size decreased as metadataExtractedAt was set, but now the LINK_LIVE_PHOTOS jobs have not been run for a large part of my assets.

Suggested solutions:
a) Set metadataExtractedAt only after LINK_LIVE_PHOTOS has completed and prioritize the LINK_LIVE_PHOTOS job so that the queue size actually decreases instead of waiting for all the METADATA_EXTRACTION jobs to complete first.
b) Merge LINK_LIVE_PHOTOS job into METADATA_EXTRACTION job
c) Create a separate queue to be able to run the LINK_LIVE_PHOTOS jobs by themselves

Version of Immich Server

v1.113.1

Platform with the issue

• Server
• Web
• Mobile

Reproduction steps

Start Metadata Extraction on multiple missing assets, let it extract from 1 asset, cancel job, clear queue. Start Metadata Extraction on missing assets again. LINK_LIVE_PHOTOS has not been run on the first extracted asset.