Feng Ruohang
2bc103b80c
fix: strip all reserved metadata on federated CopyObject ( #100 )
...
The legacy etcd federation branch of CopyObjectHandler forwards the copied
source metadata to the remote deployment with minio-go Core.PutObject, after
removing only two reserved keys (compression and actual-size). Every small
object is stored inline, so its stored metadata also carries
X-Minio-Internal-inline-data; the remote's setRequestLimitMiddleware rejects
any request bearing a reserved-prefix header (containsReservedMetadata), so
the forwarded write failed with 400 InvalidArgument "Your metadata headers
are not supported." for the default COPY metadata directive.
A plain federated PutObject must not carry any internal storage metadata, so
strip the whole reserved-prefix class before forwarding instead of an
enumerated subset. Enumerating a third key would only defer the next leak:
besides inline-data, replication bookkeeping (replica/replication status and
timestamps) is added to the same map earlier in the handler and would be
rejected just the same. None of these keys is required by the remote for a
correct plain PutObject; they are internal storage details the remote sets
for itself. The stripping uses stringsHasPrefixFold, matching the remote's
own case-insensitive detection. Ordinary user metadata (x-amz-meta-*) is
untouched and still copied.
The pre-existing UUID ETag on the federated write (no Content-MD5 is sent) is
out of scope and left unchanged, as recorded in the issue.
A new end-to-end test drives the real federation branch through
getRemoteInstanceClient and minio-go into a second in-process deployment,
copying an inline source with the default COPY directive. It asserts the copy
now succeeds, that no reserved-prefix header reaches the remote on any
forwarded request, and that copied user metadata survives.
Fixes #100
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com >
Claude-Session: https://claude.ai/code/session_01L7qJqWwy8oFA6aCXWRzXQe
Signed-off-by: Feng Ruohang <rh@vonng.com >
2026-09-07 10:32:59 +08:00
..
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