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https://issues.apache.org/jira/browse/HDDS-15283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gargi Jaiswal updated HDDS-15283:
---------------------------------
Status: Patch Available (was: In Progress)
> GetObjectTagging should return TagSet in ordered way
> ----------------------------------------------------
>
> Key: HDDS-15283
> URL: https://issues.apache.org/jira/browse/HDDS-15283
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Gargi Jaiswal
> Assignee: Gargi Jaiswal
> Priority: Major
> Labels: pull-request-available
>
> Object tags are handled internally as a {{{}Map{}}}. When {{TagSet}} is built
> from map iteration (e.g. {{{}HashMap{}}}), the order of {{<Tag>}} elements in
> the XML response is undefined. That order can differ from the order the
> client sent on {{{}PutObjectTagging{}}}, even though keys and values are
> correct.
> Some S3 compatibility suites {color:#de350b}test_put_modify_tags {color}(e.g.
> boto/s3tests) {color:#de350b}assert {{response["TagSet"] ==
> expected_tag_set}}{color} as Python lists, which requires same keys, values,
> and order.
> *Expected behavior*
> {{_GetObjectTagging_}} should return tags in a stable order. Aligning with
> common S3 behavior, tags should be ordered lexicographically by tag key
> (Unicode/string natural order).
> *Example*
>
> {code:java}
> PutObjectTagging
> TagSet: [
> { Key: key, Value: val },
> { Key: key2, Value: val2 }
> ] {code}
>
> {color:#de350b}Wrong (flaky / fails strict tests):{color}
>
> {code:java}
> GetObjectTagging----->
> "TagSet": [
> {"Key":"key2","Value":"val2"},
> {"Key":"key","Value":"val"}
> ] {code}
> *Correct (stable, passes strict equality when expectation is key-first):*
>
>
> {code:java}
> "TagSet": [
> {"Key":"key","Value":"val"},
> {"Key":"key2","Value":"val2"}
> ] {code}
> * Emit {{TagSet}} sorted by tag key when building the {{GetObjectTagging}}
> response (e.g. sort map entries before XML).
>
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