Program: 173196
Project: 173196
Buggy source:
public static Config loadConfig(Map<String,Object> cfg){
  try {
    Class.forName(AuroraClientContext.class.getName());
  }
 catch (  ClassNotFoundException e) {
    e.printStackTrace();
  }
  String twister2Home=System.getProperty(SchedulerContext.TWISTER_2_HOME);
  String configDir=System.getProperty(SchedulerContext.CONFIG_DIR);
  String clusterName=System.getProperty(SchedulerContext.CLUSTER_NAME);
  String jobJar=System.getProperty(SchedulerContext.JOB_FILE);
  Map<String,Object> environmentProperties=JobUtils.readCommandLineOpts();
  if (environmentProperties.containsKey(SchedulerContext.TWISTER_2_HOME)) {
    twister2Home=(String)environmentProperties.get(SchedulerContext.CONFIG_DIR);
  }
  if (environmentProperties.containsKey(SchedulerContext.CONFIG_DIR)) {
    configDir=(String)environmentProperties.get(SchedulerContext.CONFIG_DIR);
  }
  if (environmentProperties.containsKey(SchedulerContext.CLUSTER_NAME)) {
    clusterName=(String)environmentProperties.get(SchedulerContext.CLUSTER_NAME);
  }
  if (environmentProperties.containsKey(SchedulerContext.JOB_FILE)) {
    jobJar=(String)environmentProperties.get(SchedulerContext.JOB_FILE);
  }
  if (configDir == null) {
    configDir=twister2Home + "String_Node_Str";
  }
  LOG.log(Level.INFO,String.format("String_Node_Str" + "String_Node_Str",twister2Home,configDir,clusterName));
  Config config=ConfigLoader.loadConfig(twister2Home,configDir + "String_Node_Str" + clusterName);
  return Config.newBuilder().putAll(config).put(MPIContext.TWISTER2_HOME.getKey(),twister2Home).put(MPIContext.TWISTER2_CLUSTER_NAME,clusterName).put(MPIContext.JOB_FILE,jobJar).putAll(environmentProperties).putAll(cfg).build();
}

Fixed version (ground truth):
/** 
 * loadConfig
 * @param cfg
 * @return
 */
public static Config loadConfig(Map<String,Object> cfg){
  try {
    Class.forName(AuroraClientContext.class.getName());
  }
 catch (  ClassNotFoundException e) {
    e.printStackTrace();
  }
  String twister2Home=System.getProperty(SchedulerContext.TWISTER_2_HOME);
  String configDir=System.getProperty(SchedulerContext.CONFIG_DIR);
  String clusterName=System.getProperty(SchedulerContext.CLUSTER_NAME);
  String jobJar=System.getProperty(SchedulerContext.JOB_FILE);
  Map<String,Object> environmentProperties=JobUtils.readCommandLineOpts();
  if (environmentProperties.containsKey(SchedulerContext.TWISTER_2_HOME)) {
    twister2Home=(String)environmentProperties.get(SchedulerContext.CONFIG_DIR);
  }
  if (environmentProperties.containsKey(SchedulerContext.CONFIG_DIR)) {
    configDir=(String)environmentProperties.get(SchedulerContext.CONFIG_DIR);
  }
  if (environmentProperties.containsKey(SchedulerContext.CLUSTER_NAME)) {
    clusterName=(String)environmentProperties.get(SchedulerContext.CLUSTER_NAME);
  }
  if (environmentProperties.containsKey(SchedulerContext.JOB_FILE)) {
    jobJar=(String)environmentProperties.get(SchedulerContext.JOB_FILE);
  }
  if (configDir == null) {
    configDir=twister2Home + "String_Node_Str";
  }
  LOG.log(Level.INFO,String.format("String_Node_Str" + "String_Node_Str",twister2Home,configDir,clusterName));
  Config config=ConfigLoader.loadConfig(twister2Home,configDir + "String_Node_Str" + clusterName);
  return Config.newBuilder().putAll(config).put(MPIContext.TWISTER2_HOME.getKey(),twister2Home).put(MPIContext.TWISTER2_CLUSTER_NAME,clusterName).put(MPIContext.JOB_FILE,jobJar).putAll(environmentProperties).putAll(cfg).build();
}