A single PutObject above the 5 GiB single-request ceiling was only
rejected after the client had streamed 5 GiB into s3s's read-time body
budget, and the resulting BodySizeLimitExceeded surfaced from the erasure
writer as 500 InternalError. A body whose connection hit EOF before
Content-Length bytes arrived (hyper's IncompleteBody) was also a 500.
SDKs retry 500s, so one oversize upload was resent from offset 0 five
times.
- PutObject and UploadPart reject a declared length above
MAX_SINGLE_PUT_OBJECT_SIZE with 400 EntityTooLarge before reading the
body; the constant moves to rustfs_config so the s3s limit and the
admission check share one value.
- ApiError maps BodySizeLimitExceeded to EntityTooLarge and a hyper body
EOF to IncompleteBody across both io::Error conversions.
Fixes#7596.
唐小鸭
22fb79b6f2