HDDS-15645. ListObjectsV2 returns Owner when FetchOwner is not requested

[sravani-revuri]

What changes were proposed in this pull request?

The S3 compatibility tests test_bucket_listv2_fetchowner_defaultempty and test_bucket_listv2_fetchowner_empty are failing because in the S3 ListObjectsV2 response, the Owner field is currently included for each object even when the fetch-owner parameter is not set or is false. According to S3 behavior, owner information should only be returned when fetch-owner=true is requested. Update the response generation logic to omit the Owner field unless the fetch-owner flag is enabled.

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-15645

How was this patch tested?

Written unit tests.

[Gargi-jais11]

Thanks @sravani-revuri for working on this. Overall LGTM!
Please add integration test as well in AbstractS3SDKV1Tests and AbstractS3SDKV2Tests.

[Gargi-jais11]

Thanks @sravani-revuri for updating the patch. LGTM!, +1.
@sreejasahithi would u like to take a look on this.

[sreejasahithi]

Thanks @sravani-revuri for the PR.
The change LGTM.

FYI: now ListObjectsV2 responses no longer include per-object owner by default (previously always included it). Users that need owner metadata on V2 lists should pass fetch-owner=true.

[Gargi-jais11]

Thanks @sravani-revuri for the PR. The change LGTM.

FYI: now ListObjectsV2 responses no longer include per-object owner by default (previously always included it). Users that need owner metadata on V2 lists should pass fetch-owner=true.

Yaa that's correct for per-object owner user needs list-objectv1 or fetch-owner=true.

[Gargi-jais11]

Thanks @sravani-revuri for working on this and @sreejasahithi for the review.