@Override
  public ISchemaReader<INodeSchemaInfo> getNodeReader(IShowNodesPlan showNodesPlan)
      throws MetadataException {
    return mtree.getNodeReader(showNodesPlan);
  }
remove the node from the tag inverted index
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/schemaengine/schemaregion/impl/SchemaRegionPBTreeImpl.java