public static boolean isIcebergTable(Table table) {
    return table.isNonNative() && 
            table.getStorageHandler().getType() == StorageHandlerTypes.ICEBERG;
  }
Get the fully qualified name in the node.
E.g. the node of the form ^(DOT ^(DOT a b) c) will generate a name of the form "a.b.c".
ql/src/java/org/apache/hadoop/hive/ql/ddl/DDLUtils.java