@Override
  public void grantPrivileges(List<HivePrincipal> hivePrincipals,
      List<HivePrivilege> hivePrivileges, HivePrivilegeObject hivePrivObject,
      HivePrincipal grantorPrincipal, boolean grantOption)
          throws HiveAuthzPluginException, HiveAccessControlException {

    hivePrivileges = expandAndValidatePrivileges(hivePrivileges);

    IMetaStoreClient metastoreClient = metastoreClientFactory.getHiveMetastoreClient();
    // authorize the grant
    GrantPrivAuthUtils.authorize(hivePrincipals, hivePrivileges, hivePrivObject, grantOption,
        metastoreClient, authenticator.getUserName(), getCurrentRoleNames(), isUserAdmin());

    // grant
    PrivilegeBag privBag = SQLAuthorizationUtils.getThriftPrivilegesBag(hivePrincipals, hivePrivileges, hivePrivObject,
        grantorPrincipal, grantOption);
    try {
      metastoreClient.grant_privileges(privBag);
    } catch (Exception e) {
      throw SQLAuthorizationUtils.getPluginException("Error granting privileges", e);
    }
  }
Add role names of parentRoles and its parents to processedRolesMap

@param processedRolesMap
@param roleGrants
@throws TException
@throws HiveAuthzPluginException
@throws MetaException
ql/src/java/org/apache/hadoop/hive/ql/security/authorization/plugin/sqlstd/SQLStdHiveAccessController.java