Program: 174432
Project: 174432
Buggy source:
public static void main(String[] args) throws Exception {
  Properties properties=Tools.loadProperties();
  final String groupId=properties.getProperty("String_Node_Str");
  final String producerId=properties.getProperty("String_Node_Str");
  final String topic=properties.getProperty("String_Node_Str");
  final int qosLevel=Integer.parseInt(properties.getProperty("String_Node_Str"));
  final Boolean cleanSession=Boolean.parseBoolean(properties.getProperty("String_Node_Str"));
  String targetClientId=groupId + "String_Node_Str";
  String accessKey=properties.getProperty("String_Node_Str");
  String secretKey=properties.getProperty("String_Node_Str");
  Properties initProperties=new Properties();
  initProperties.put(PropertyKeyConst.ProducerId,producerId);
  initProperties.put(PropertyKeyConst.AccessKey,accessKey);
  initProperties.put(PropertyKeyConst.SecretKey,secretKey);
  Producer producer=ONSFactory.createProducer(properties);
  producer.start();
  final Message msg=new Message(topic,"String_Node_Str","String_Node_Str".getBytes());
  msg.putUserProperties("String_Node_Str","String_Node_Str" + qosLevel);
  msg.putUserProperties("String_Node_Str",String.valueOf(qosLevel));
  msg.putUserProperties("String_Node_Str",String.valueOf(cleanSession));
  SendResult result=producer.send(msg);
  System.out.println(result);
  final Message msg2=new Message(topic,"String_Node_Str","String_Node_Str".getBytes());
  msg2.putUserProperties("String_Node_Str","String_Node_Str" + targetClientId);
  SendResult sendResult=producer.send(msg2);
  System.out.println(sendResult);
  producer.shutdown();
  System.exit(0);
}

Fixed version (ground truth):
public static void main(String[] args) throws Exception {
  Properties properties=Tools.loadProperties();
  final String groupId=properties.getProperty("String_Node_Str");
  final String producerId=properties.getProperty("String_Node_Str");
  final String topic=properties.getProperty("String_Node_Str");
  final int qosLevel=Integer.parseInt(properties.getProperty("String_Node_Str"));
  final Boolean cleanSession=Boolean.parseBoolean(properties.getProperty("String_Node_Str"));
  String targetClientId=groupId + "String_Node_Str";
  String accessKey=properties.getProperty("String_Node_Str");
  String secretKey=properties.getProperty("String_Node_Str");
  Properties initProperties=new Properties();
  initProperties.put(PropertyKeyConst.ProducerId,producerId);
  initProperties.put(PropertyKeyConst.AccessKey,accessKey);
  initProperties.put(PropertyKeyConst.SecretKey,secretKey);
  Producer producer=ONSFactory.createProducer(initProperties);
  producer.start();
  final Message msg=new Message(topic,"String_Node_Str","String_Node_Str".getBytes());
  msg.putUserProperties("String_Node_Str","String_Node_Str" + qosLevel);
  msg.putUserProperties("String_Node_Str",String.valueOf(qosLevel));
  msg.putUserProperties("String_Node_Str",String.valueOf(cleanSession));
  SendResult result=producer.send(msg);
  System.out.println(result);
  final Message msg2=new Message(topic,"String_Node_Str","String_Node_Str".getBytes());
  msg2.putUserProperties("String_Node_Str","String_Node_Str" + targetClientId);
  SendResult sendResult=producer.send(msg2);
  System.out.println(sendResult);
  producer.shutdown();
  System.exit(0);
}