default boolean setDisksOrder(Map<DiskId, DiskId> newDiskMapping) {
    // The default should be to do nothing about disk order, so return false.
    return false;
  }
Given a map of old disks and new disks, swaps the old disks with the new disks in the DataNodeConfig,
and persists the resulting changes to Helix.
@param newDiskMapping A map of old disks to new disks.
@return {@code true} if the disks order was successfully updated, {@code false} otherwise.
ambry-api/src/main/java/com/github/ambry/clustermap/ClusterParticipant.java