Bug: il caricamento del backup multipart S3 fallisce con il metodo undefined 'downcase' per nil

zogstrip · 15 Luglio 2026, 12:30pm

Grazie per il report @saeid_ezzati Verrà risolto da

github.com/discourse/discourse

FIX: Multipart S3 uploads failing with checksum calculation set to "when required" (#41732)

main ← fix-s3-multipart-checksum-when-required

merged 01:32PM - 15 Jul 26 UTC

ZogStriP

+26 -17

Previously, S3 backups and uploads larger than the multipart threshold crashed w…ith `undefined method 'downcase' for nil` whenever `AWS_REQUEST_CHECKSUM_CALCULATION` was set to `when_required` (a common setup for S3-compatible providers such as Cloudflare R2, Backblaze B2, and MinIO), because of a bug in `aws-sdk-s3` 1.182.0's multipart uploader. This change bumps `aws-sdk-s3` to 1.227.0 — which respects `when_required` in multipart uploads — and adapts to its API changes: moving off the newly-deprecated `Aws::S3::Object#upload_file`/`#download_file` onto `Aws::S3::TransferManager`, and reading the ETag back from the destination now that multipart copies no longer return a response.

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Backups to Cloudflare R2 fail during multipart upload with aws-sdk-s3 1.182.0 (undefined method 'downcase' for nil) Bug	3	143	Aprile 4, 2026
Error uploading backup to B2 Support backups , s3	8	192	Marzo 4, 2026
Cannot upload or backup to Amazon S3 Self-hosting backups , s3	3	2181	Ottobre 14, 2015
Backblaze B2 backup fails - Unsupported header 'x-amz-checksum-algorithm' Bug	1	349	Febbraio 26, 2025
Can't rebuild due to AWS SDK gem bump and new AWS Data Integrity Protections Self-hosting	53	1698	Novembre 4, 2025

Bug: il caricamento del backup multipart S3 fallisce con il metodo undefined 'downcase' per nil

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