Solr index rebuild does not populate index unless Search/bin/sync is executed

Omeka S Modules
1

Hello,

I installed the Search and Solr modules and configured Apache Solr 9.10.1.

Environment

Omeka S version: 4.4.1
Search module: 0.20.1
Solr module: 0.22.1
Solr server: 9.10.1
OS: Ubuntu

Database contains items:
SELECT COUNT(*) FROM item;
Result: 840

Problem

Reindexing from the admin interface (Search → Indexes → Reindex) completes successfully but Solr remains empty.

Example query:
curl “http://my-ipaddress:8983/solr/omeka-s/select?q=*:*&rows=10”

Result:
numFound = 0

However, when running the command manually:

sudo -u www-data php /var/www/html/omeka-s/modules/Search/bin/sync --user-id 26

Solr immediately begins indexing and documents appear.

Example after running sync:
numFound = 400

Why does the Search index rebuild job not populate Solr while the CLI sync command does?
Is additional configuration required for the job

Omeka-s-Search
Omeka-s-Search1920×1080 95.1 KB

Omeks-s-Terminal
Omeks-s-Terminal1452×790 35.4 KB

omeka-s-sysnc
omeka-s-sysnc1920×1080 95.2 KB

worker?

2

The Search module has a setting to activate the Background Sync Job. Here is the documentation of the setting:

The frequency at which the module checks if there are resources to be indexed. A smaller interval means a more up-to-date index. This should only be used if the script bin/sync cannot be run periodically (using cron for instance). Leave empty to disable.

3

The index rebuild job has been changed recently. Its name does not reflect what it does anymore (I know it’s confusing, I have to change that).
Now it only marks all resources for reindexation. bin/sync does the real work.