public void setAlias(IMeasurementMNode<ICachedMNode> measurementMNode, String alias)
      throws MetadataException {
    store.setAlias(measurementMNode, alias);
  }
Used when delete timeseries or deactivate template. The last survived ancestor will be
unpinned.

@param entityMNode delete empty InternalMNode from entityMNode to storageGroupMNode
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/schemaengine/schemaregion/mtree/impl/pbtree/MTreeBelowSGCachedImpl.java