Why are large OMAPs showing in Red Hat Ceph Storage Archive Zone Clusters after enabling dynamic bucket resharding?

Issue

• Red Hat Ceph Storage 5.3 introduces a new feature called Dynamic Bucket Resharding. It allows buckets to be resharded in a Rados-gateway multi-site configuration without interrupting the replication of their objects. For addditional information, please refer to the Object Gateway Guide.

• After enabling this feature in clusters designated to the Archive Zone, some large OMAP health warnings affecting bucket index objects are still showing. Example output:

  cluster:
              id:     <cluster-ID>
              health: HEALTH_WARN
                      898 large omap objects
  
            services:
              mon: 3 daemons, quorum clusternode01,clusternode03,clusternode02 (age 6w)
              mgr: clusternode03.ratthl(active, since 5w), standbys: clusternode01.vmeabu
              osd: 96 osds: 96 up (since 4w), 96 in (since 5M)
              rgw: 4 daemons active (4 hosts, 1 zones)
  
            data:
              pools:   8 pools, 225 pgs
              objects: 497.32M objects, 38 TiB
              usage:   74 TiB used, 1.3 PiB / 1.4 PiB avail
              pgs:     214 active+clean
                       11  active+clean+scrubbing+deep
  

• Why are these warnings still observed? How to fix this issue?