private static LlapStatusServiceDriver createServiceDriver() {
    LlapStatusServiceDriver statusServiceDriver = null;
    try {
      statusServiceDriver = new LlapStatusServiceDriver();
    } catch (Throwable t) {
      logError(t);
      System.exit(ExitCode.INTERNAL_ERROR.getCode());
    }
    return statusServiceDriver;
  }
Checks the status of the Llap.
llap-server/src/java/org/apache/hadoop/hive/llap/cli/status/LlapStatusServiceDriver.java