private void addServiceDeletedColumnToClusterConfigTable() throws SQLException {
    if (!dbAccessor.tableHasColumn(CLUSTERCONFIG_TABLE, UNMAPPED_COLUMN)) {
      dbAccessor.addColumn(CLUSTERCONFIG_TABLE,
          new DBColumnInfo(SERVICE_DELETED_COLUMN, Short.class, null, 0, false));
    }
  }
Adds the {@value #SERVICE_DELETED_COLUMN} column to the
{@value #CLUSTERCONFIG_TABLE} table.

@throws java.sql.SQLException
ambari-server/src/main/java/org/apache/ambari/server/upgrade/UpgradeCatalog252.java