@Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((columns == null) ? 0 : columns.hashCode());
    result = prime * result + ((name == null) ? 0 : name.hashCode());
    return result;
  }
Represents the hive privilege being granted/revoked
ql/src/java/org/apache/hadoop/hive/ql/security/authorization/plugin/HivePrivilege.java