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Delete Markers

Last updated: 2024-03-25 15:33:39

Overview
A delete marker is used to mark a versioned object as “deleted” in COS. It has an object key and version ID just like an object, but with the following differences:
Its content is empty.
It is not associated with an ACL value.
A GET request on a delete marker will return a 404 error.
The only operation you can use on a delete marker is DELETE, and only the root account can make such a request.
Deleting a Delete Marker
To permanently delete a delete marker, specify its version ID in a DELETE Object versionId request. If you use a DELETE request to delete a delete marker without specifying its version ID, COS will not delete the delete marker, but instead, insert another delete marker.
The following figure shows how a simple DELETE on a delete marker removes nothing, but adds a new delete marker to the bucket.
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In a versioning-enabled bucket, a new delete marker has a unique version ID. Therefore, one object may have multiple delete markers in the same bucket. To delete a delete marker permanently, you must include its version ID in a DELETE Object versionId request.
The following figure shows how you can permanently delete a delete marker with a DELETE Object versionId request.
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You can delete a delete marker only after the root account grants the DeleteObject permission.
To permanently delete a delete marker:
1. Set versionId to the ID of the version of the delete marker you want to delete.
2. Send a DELETE Object versionId request.