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Chris Lu
f3bc9e112c
Pin the end-to-end fix for #8908 with a test that mirrors what Docker Registry actually does on pull: a 25-part * 5MB upload with bucket- default SSE-S3, then a full GET, then SHA-256 over the streamed body must match SHA-256 over the uploaded bytes. The eager-multipart-reader bug was specifically a streaming truncation under load: the response status was 200 with a Content-Length matching the object size, but the body short-circuited mid-stream because later chunks' volume-server connections had already been closed by keepalive. The hash check is the symptom Docker Registry surfaces ("Digest did not match"), so this is the most faithful regression we can pin without spinning up a registry. uploadAndVerifyMultipartSSEObject already byte-compares the GET body, but hashing on top is intentionally explicit -- it documents WHY the test exists, and matches the failure mode reported in the issue.