Can't import dump to v1.16.0 from v1.9.0, will trigger os error 24

[xbbshampoo]

Describe the bug
The dump file is around 12gb, I can't import into the new version of meilisearch (v1.16.0) that I dumped from v1.9.0

It will prompt out this error

2025-08-08T07:26:11.715727Z ERROR meilisearch: error=Too many open files (os error 24)

To Reproduce
Commands that I ran before this

ulimit -Sn 999999;
sudo meilisearch --db-path /var/lib/meilisearch/data.ms --import-dump "/var/opt/meilisearch/dumps/20250808-034645854.dump"

Expected behavior
Successful import and start meilisearch service

Screenshots
If applicable, add screenshots to help explain your problem.

Meilisearch version:
v1.9 to v1.16

Additional context
OS (Debian Bookworm) hosted via Google Cloud

The informations I get from /stats

{
    "databaseSize": 279746232320,
    "lastUpdate": "2025-08-08T10:45:49.990518672Z",
    "indexes": {
        "items": {
            "numberOfDocuments": 12619823,
            "isIndexing": false,
            "fieldDistribution": {
                "__soft_deleted": 12619823,
                "_translations": 12604904,
                "additional_informations": 12619823,
                "asset": 12619823,
                "categories": 12619823,
                "color_codes": 12619823,
                "comments_count": 12619823,
                "created_at": 12619823,
                "deleted_at": 12619823,
                "description": 12619823,
                "downloads_count": 12619823,
                "featured": 12619823,
                "featured_at": 12619823,
                "formats": 12619823,
                "height": 12619823,
                "id": 12619823,
                "is_premium": 12619823,
                "keywords": 12619823,
                "license_id": 12619823,
                "likes_count": 12619823,
                "mockup_preview": 12619823,
                "modified_at": 12619823,
                "name": 12619823,
                "pack": 12619823,
                "pack_id": 12619823,
                "price": 12619823,
                "priority": 12619823,
                "rank": 12619823,
                "raw_item_id": 12619823,
                "size": 12619823,
                "slug": 12619823,
                "status": 12619823,
                "style": 12619823,
                "style_id": 12619823,
                "tags": 12619823,
                "total_view": 12619823,
                "updated_at": 12619823,
                "urls": 12619823,
                "user_id": 12619823,
                "uuid": 12619823,
                "width": 12619823
            }
        }
    }
}

[Kerollmops]

Hey @xbbshampoo 👋

Thanks for the report but can you increase the maximum number of opened files by running the ulimit -Sn 3000 command, for example? Then rerun the dump import and it should work.

Have a nice weekend 🌵

[xbbshampoo]

hey @Kerollmops , I did try with this

ulimit -Sn 999999;

the results is still the same 😢

[Kerollmops]

Have you actually launched Meilisearch from the same shell? If it still doesn't work, can you reduce the number of indexing threads of Meilisearch?

[xbbshampoo]

yes i did launched the meilisearch with the same shell with ulimit -Sn 999999, let me try with reducing the indexing threads and see how it goes

[xbbshampoo]

hey @Kerollmops , the reducing numbers of indexing threads works

[Kerollmops]

Hey @xbbshampoo 👋
That's nice to hear. How many threads does your machine has?