Revert "fix: unified resource server list queries order column" (#109529)

pkg/storage/unified/resource/storage_backend.go

@@ -215,6 +215,7 @@ func (k *kvStorageBackend) ListIterator(ctx context.Context, req *resourcepb.Lis
 
 	// Fetch the latest objects
 	keys := make([]MetaDataKey, 0, min(defaultListBufferSize, req.Limit+1))
+	idx := 0
 	for metaKey, err := range k.metaStore.ListResourceKeysAtRevision(ctx, MetaListRequestKey{
 		Namespace: req.Options.Key.Namespace,
 		Group:     req.Options.Key.Group,
@@ -224,15 +225,17 @@ func (k *kvStorageBackend) ListIterator(ctx context.Context, req *resourcepb.Lis
 		if err != nil {
 			return 0, err
 		}
+		// Skip the first offset items. This is not efficient, but it's a simple way to implement it for now.
+		if idx < int(offset) {
+			idx++
+			continue
+		}
 		keys = append(keys, metaKey)
+		// Only fetch the first limit items + 1 to get the next token.
+		if len(keys) >= int(req.Limit+1) {
+			break
+		}
 	}
-
-	sortMetaKeysByResourceVersion(keys, true) // sort ascending for sql parity
-
-	if offset > 0 && int64(len(keys)) > offset {
-		keys = keys[offset:]
-	}
-
 	iter := kvListIterator{
 		keys:         keys,
 		currentIndex: -1,
@@ -430,19 +433,6 @@ func sortByResourceVersion(filteredKeys []DataKey, sortAscending bool) {
 	}
 }
 
-// sortMetaKeysByResourceVersion sorts the metadata keys based on the sortAscending flag
-func sortMetaKeysByResourceVersion(keys []MetaDataKey, sortAscending bool) {
-	if sortAscending {
-		sort.Slice(keys, func(i, j int) bool {
-			return keys[i].ResourceVersion < keys[j].ResourceVersion
-		})
-	} else {
-		sort.Slice(keys, func(i, j int) bool {
-			return keys[i].ResourceVersion > keys[j].ResourceVersion
-		})
-	}
-}
-
 // applyPagination filters keys based on pagination parameters
 func applyPagination(keys []DataKey, lastSeenRV int64, sortAscending bool) []DataKey {
 	if lastSeenRV == 0 {