message: since rocksdb's range deletion feature is not ready(facebook/rocksdb#1797), just diable it temporally
diff: @@ -1412,7 +1412,7 @@ OP_NAMESPACE_BEGIN
  features.support_namespace = 1;
  features.support_merge = 1;
  features.support_backup = 1;
  - features.support_delete_range = 1;
  + features.support_delete_range = 0;
  return features;
  }
  