Multipart dataset upload can bypass single_file_upload_max_size_mib limit

[carloea2]

What happened?

Multipart uploads are able to complete successfully even when the final uploaded object exceeds the configured single_file_upload_max_size_mib limit. This allows uploading files larger than the intended max size through the multipart upload flow.

How to reproduce?

How to reproduce?

1. Configure a small max upload size:

   • Set site_settings.key = single_file_upload_max_size_mib to 1 (1 MiB).

2. Start a multipart upload for a file larger than 1 MiB (e.g., 2 MiB) using the multipart endpoints.

3. Upload the parts and call finish.

4. Observe that the upload completes and the file is accessible despite exceeding the max.

Version

1.1.0-incubating (Pre-release/Master)

Commit Hash (Optional)

No response

What browsers are you seeing the problem on?

No response

Relevant log output