[Bug]: `occ dav:sync-system-addressbook` stops after 30000 entries

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

When running the above command, it stops at 30,000 entries.

Discussed here and suggested I open a report on GH. https://help.nextcloud.com/t/occ-dav-sync-system-addressbook-stops-at-30000/206828

Steps to reproduce

1. Have over 30,000 users
2. Run the command

Expected behavior

Process continues over all users.

Nextcloud Server version

29

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.1

Web server

Apache (supported)

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

Upgraded to a MAJOR version (ex. 28 to 29)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

{
"system": {
"instanceid": "REMOVED SENSITIVE VALUE",
"passwordsalt": "REMOVED SENSITIVE VALUE",
"secret": "REMOVED SENSITIVE VALUE",
"trusted_domains": [
"REMOVED SENSITIVE VALUE",
],
"datadirectory": "REMOVED SENSITIVE VALUE",
"dbtype": "mysql",
"overwriteprotocol": "https",
"version": "29.0.8.1",
"overwrite.cli.url": "REMOVED SENSITIVE VALUE",
"htaccess.RewriteBase": "/",
"dbname": "REMOVED SENSITIVE VALUE",
"skeletondirectory": "",
"dbhost": "REMOVED SENSITIVE VALUE",
"dbport": "3306",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "REMOVED SENSITIVE VALUE",
"dbpassword": "REMOVED SENSITIVE VALUE",
"installed": true,
"memcache.local": "\OC\Memcache\APCu",
"memcache.locking": "\OC\Memcache\Redis",
"memcache.distributed": "\OC\Memcache\Redis",
"redis": {
"host": "REMOVED SENSITIVE VALUE",
"port": 6379,
"dbindex": 0,
"timeout": 1.5,
"read_timeout": 1.5
},
"check_for_working_wellknown_setup": true,
"check_for_working_htaccess": true,
"trashbin_retention_obligation": "auto, 1",
"ldapIgnoreNamingRules": false,
"ldapProviderFactory": "OCA\User_LDAP\LDAPProviderFactory",
"maintenance": false,
"maintenance_window_start": 5,
"integrity.check.disabled": false,
"theme": "",
"loglevel": 0,
"app_install_overwrite": [
"occweb",
"calendar"
],
"updater.release.channel": "stable",
"mail_smtpmode": "smtp",
"mail_smtpsecure": "tls",
"mail_sendmailmode": "smtp",
"mail_from_address": "REMOVED SENSITIVE VALUE",
"mail_domain": "REMOVED SENSITIVE VALUE",
"mail_smtpauthtype": "LOGIN",
"mail_smtpauth": 1,
"mail_smtphost": "REMOVED SENSITIVE VALUE",
"mail_smtpport": "587",
"mail_smtpname": "REMOVED SENSITIVE VALUE",
"mail_smtppassword": "REMOVED SENSITIVE VALUE"
}
}

List of activated Apps

Enabled:

• activity: 2.21.1
• admin_audit: 1.19.0
• calendar: 4.7.16
• cloud_federation_api: 1.12.0
• comments: 1.19.0
• contacts: 6.0.0
• contactsinteraction: 1.10.0
• dashboard: 7.9.0
• dav: 1.30.1
• federatedfilesharing: 1.19.0
• federation: 1.19.0
• files: 2.1.1
• files_downloadlimit: 2.0.0
• files_pdfviewer: 2.10.0
• files_reminders: 1.2.0
• files_sharing: 1.21.0
• files_trashbin: 1.19.0
• files_versions: 1.22.0
• firstrunwizard: 2.18.0
• gpoddersync: 3.10.0
• groupquota: 0.2.1
• logreader: 2.14.0
• lookup_server_connector: 1.17.0
• mail: 3.7.8
• maps: 1.4.0
• music: 2.0.1
• nextcloud_announcements: 1.18.0
• notes: 4.11.0
• notifications: 2.17.0
• oauth2: 1.17.1
• password_policy: 1.19.0
• photos: 2.5.0
• piwik: 0.13.0
• provisioning_api: 1.19.0
• recommendations: 2.1.0
• related_resources: 1.4.0
• serverinfo: 1.19.0
• settings: 1.12.0
• sharebymail: 1.19.0
• sociallogin: 5.6.6
• support: 1.12.0
• survey_client: 1.17.0
• systemtags: 1.19.0
• tasks: 0.16.1
• text: 3.10.1
• theming: 2.4.0
• twofactor_backupcodes: 1.18.0
• twofactor_totp: 11.0.0-dev
• updatenotification: 1.19.1
• user_ldap: 1.20.0
• user_status: 1.9.0
• viewer: 2.3.0
• weather_status: 1.9.0
• workflowengine: 2.11.0
  Disabled:
• bruteforcesettings: 2.9.0
• circles: 29.0.0-dev (installed 0.20.10)
• encryption: 2.17.0
• files_external: 1.21.0
• files_rightclick: 0.15.1 (installed 1.6.0)
• news: 24.0.0 (installed 24.0.0)
• privacy: 1.13.0 (installed 1.0.0)
• suspicious_login: 7.0.0

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

No response

Additional info

No response

Start with the occ dav:sync-system-addressbook command and trace how it retrieves and processes LDAP users. Reproduce the issue with more than 30,000 users, then verify that synchronization continues beyond the 30,000-entry limit and processes all users.