Program: 112669
Project: 112669
Buggy source:
public static void main(String[] args) throws IOException, NumberFormatException, InterruptedException {
  if (args.length < 4) {
    log.info("String_Node_Str");
  }
 else {
    Producer<String,String> producer=new Producer<String,String>(createProducerConfig(args[3]));
    Gson gson=new Gson();
    Reader in=new FileReader(args[0]);
    CSVParser parser=CSVFormat.DEFAULT.parse(in);
    List<String> columnNames=new ArrayList<>();
    for (    CSVRecord csvRecord : parser.getRecords()) {
      if (columnNames.size() == 0) {
        Iterator<String> iterator=csvRecord.iterator();
        while (iterator.hasNext()) {
          columnNames.add(iterator.next());
        }
      }
 else {
        StratioStreamingMessage message=new StratioStreamingMessage();
        message.setOperation(STREAM_OPERATIONS.MANIPULATION.INSERT);
        message.setStreamName(args[1]);
        message.setTimestamp(System.currentTimeMillis());
        message.setSession_id(String.valueOf(System.currentTimeMillis()));
        message.setRequest_id(String.valueOf(System.currentTimeMillis()));
        message.setRequest("String_Node_Str");
        List<ColumnNameTypeValue> sensorData=new ArrayList<>();
        for (int i=0; i < columnNames.size(); i++) {
          Object value=null;
          try {
            value=Double.valueOf(csvRecord.get(i));
          }
 catch (          NumberFormatException e) {
            value=csvRecord.get(i);
          }
          sensorData.add(new ColumnNameTypeValue(columnNames.get(i),null,value));
        }
        message.setColumns(sensorData);
        String json=gson.toJson(message);
        log.info("String_Node_Str",json);
        producer.send(new KeyedMessage<String,String>(InternalTopic.TOPIC_DATA.getTopicName(),json));
        log.info("String_Node_Str",args[2]);
        Thread.sleep(Long.valueOf(args[2]));
      }
    }
    log.info("String_Node_Str");
  }
}

Fixed version (ground truth):
public static void main(String[] args) throws IOException, NumberFormatException, InterruptedException {
  if (args.length < 4) {
    log.info("String_Node_Str");
  }
 else {
    Producer<String,String> producer=new Producer<String,String>(createProducerConfig(args[3]));
    Gson gson=new Gson();
    Reader in=new FileReader(args[0]);
    CSVParser parser=CSVFormat.DEFAULT.parse(in);
    List<String> columnNames=new ArrayList<>();
    for (    CSVRecord csvRecord : parser.getRecords()) {
      if (columnNames.size() == 0) {
        Iterator<String> iterator=csvRecord.iterator();
        while (iterator.hasNext()) {
          columnNames.add(iterator.next());
        }
      }
 else {
        StratioStreamingMessage message=new StratioStreamingMessage();
        message.setOperation(STREAM_OPERATIONS.MANIPULATION.INSERT.toLowerCase());
        message.setStreamName(args[1]);
        message.setTimestamp(System.currentTimeMillis());
        message.setSession_id(String.valueOf(System.currentTimeMillis()));
        message.setRequest_id(String.valueOf(System.currentTimeMillis()));
        message.setRequest("String_Node_Str");
        List<ColumnNameTypeValue> sensorData=new ArrayList<>();
        for (int i=0; i < columnNames.size(); i++) {
          Object value=null;
          try {
            value=Double.valueOf(csvRecord.get(i));
          }
 catch (          NumberFormatException e) {
            value=csvRecord.get(i);
          }
          sensorData.add(new ColumnNameTypeValue(columnNames.get(i),null,value));
        }
        message.setColumns(sensorData);
        String json=gson.toJson(message);
        log.info("String_Node_Str",json);
        producer.send(new KeyedMessage<String,String>(InternalTopic.TOPIC_DATA.getTopicName(),STREAM_OPERATIONS.MANIPULATION.INSERT,json));
        log.info("String_Node_Str",args[2]);
        Thread.sleep(Long.valueOf(args[2]));
      }
    }
    log.info("String_Node_Str");
  }
}