@Override
  public String toString() {
    return this.getClass().getSimpleName() + " for " + getFullTableName();
  }
@return what kind of replication scope this truncate is running under.
This can result in a "TRUNCATE IF NEWER THAN" kind of semantic
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/misc/truncate/TruncateTableDesc.java