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https://issues.apache.org/jira/browse/HDDS-16053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gargi Jaiswal reopened HDDS-16053:
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> Support GetObjectAttributes in Ozone S3 Gateway
> ------------------------------------------------
>
> Key: HDDS-16053
> URL: https://issues.apache.org/jira/browse/HDDS-16053
> Project: Apache Ozone
> Issue Type: Task
> Components: S3
> Reporter: Gargi Jaiswal
> Assignee: Gargi Jaiswal
> Priority: Major
> Fix For: 2.3.0
>
>
> {{*GetObjectAttributes*}} is an AWS S3 API that returns selected object
> metadata without downloading the object body. It is similar to
> {*}{{HeadObject}}{*}, but the client chooses which fields to return via the
> {color:#00875a}{{x-amz-object-attributes}}{color} header. The request looks
> like:
>
> {code:java}
> GET /{bucket}/{key}?attributes
> x-amz-object-attributes: ETag,ObjectSize,StorageClass,ObjectParts {code}
> Work is split into two phases:
> * *Phase 1 —* Core API: {{{}ETag{}}}, {{{}ObjectSize{}}},
> {{{}StorageClass{}}}, and {{ObjectParts}} part count only.
> S3 Gateway only; no OM changes.
> * *Phase 2 —* Full {*}{{ObjectParts}}{*}: per-part {{Parts[]}} (PartNumber,
> Size) and pagination ({{{}MaxParts{}}}, markers, {{{}IsTruncated{}}}).
> Requires OM/metadata support for completed multipart objects.
> h2. Out of scope for this epic:
> The following are intentionally out of scope :
> * {{*Checksum*}} *attribute* *—* Ozone does not currently store non-MD5
> checksums (CRC32, CRC32C, SHA-256, etc.) in key metadata. If requseted, this
> field is omitted from the response rather than returning an error.
> Full support requires a follow-on change to compute and persist checksums on
> _PutObject/UploadPart._
> * *Object versioning ({{{}versionId{}}})* — S3 object versiooning is not
> implemented in Ozone. The {{versionId}} query parameter is not supported.
> Once this feature is merged we can support it.
> * *SSE-C encryption headers* — Server-Side Encryption with Customer Keys is
> not implemented in Ozone and is not handled by
> this API.
> AWS S3 documentation:
> [https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectAttributes.html]
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