private void addBackgroundColumnToHostRoleCommand() throws SQLException {
    dbAccessor.addColumn(HOST_ROLE_COMMAND_TABLE,
        new DBColumnInfo(HRC_IS_BACKGROUND_COLUMN, Short.class, null, 0, false));
  }
Adds the {@value #HRC_IS_BACKGROUND_COLUMN} column to the
{@value #HOST_ROLE_COMMAND_TABLE} table.

@throws SQLException
ambari-server/src/main/java/org/apache/ambari/server/upgrade/UpgradeCatalog251.java