public static void parseHeaderInfo(String headerString){
	String[] headers;
	headers = headerString.split(",");
	int[] types = new int[headers.length];
	for(int i = 0; i < headers.length; ++i){
		String[] pairs = headers[i].split(":");
		String type = pairs[1];
		headers[i] = pairs[0];
		if(type.equals("long")){
			types[i] = 0;
		}else if(type.equals("int")){
			types[i] = 1;
		}else if(type.equals("short")){
			types[i] = 2;
		}else if(type.equals("byte")){
			types[i] = 3;
		}else if(type.equals("float")){
			types[i] = 4;
		}else if(type.equals("double")){
			types[i] = 5;
		}else if(type.equals("string")){
			types[i] = 6;
		}
		System.out.println(type +":"+ types[i]);
	}
	Tuple.setTypes(types);
}