@Override
  public void configureInputJobCredentials(TableDesc tableDesc, Map<String, String> secrets) {
    //do nothing by default
  }
DefaultStorageHandler is an implementation of {@link HiveStorageHandler}
which supplies the standard defaults for all options.  This can be useful
either as the base class for custom storage handlers, or as a mock in tests
(providing something which appears to be a non-native table with respect to
metadata even though its behavior is otherwise identical to a native table).
ql/src/java/org/apache/hadoop/hive/ql/metadata/DefaultStorageHandler.java