[
	{
		"name": "spark.task.cpus",
		"upperBound":1,
		"lowerBound":1,
		"changeFactor": 1
	},
	{
		"name": "spark.executor.cores",
		"upperBound":8,
		"lowerBound":1,
		"changeFactor": 1
	},
	{
		"name": "spark.executor.memory",
		"upperBound":4096,
		"lowerBound":512,
		"changeFactor": 256
	},
	{
		"name": "spark.driver.cores",
		"upperBound":4,
		"lowerBound":1,
		"changeFactor": 1
	},
	{
		"name": "spark.driver.memory",
		"upperBound":4096,
		"lowerBound":1024,
		"changeFactor": 512
	},
	{
		"name": "spark.reducer.maxSizeInFlight",
		"upperBound":72,
		"lowerBound":24,
		"changeFactor": 6
	},
	{
		"name": "spark.shuffle.compress",
		"upperBound":1,
		"lowerBound":0,
		"changeFactor": 1
	},
	{
		"name": "spark.shuffle.spill.compress",
		"upperBound":1,
		"lowerBound":0,
		"changeFactor": 1
	},
	{
		"name": "spark.shuffle.file.buffer",
		"upperBound":128,
		"lowerBound":16,
		"changeFactor": 16
	},
	{
		"name": "spark.broadcast.compress",
		"upperBound":1,
		"lowerBound":0,
		"changeFactor": 1
	},
	{
		"name": "spark.broadcast.blockSize",
		"upperBound":14,
		"lowerBound":2,
		"changeFactor": 2
	},
	{
		"name": "spark.rpc.message.maxSize",
		"upperBound":256,
		"lowerBound":64,
		"changeFactor": 64
	},
	{
		"name": "spark.memory.fraction",
		"upperBound":80,
		"lowerBound":10,
		"changeFactor": 10
	},
	{
		"name": "spark.memory.storageFraction",
		"upperBound":70,
		"lowerBound":30,
		"changeFactor": 10
	},
	{
		"name": "spark.rdd.compress",
		"upperBound":1,
		"lowerBound":0,
		"changeFactor": 1
	},
	{
		"name": "spark.io.compression.codec",
		"upperBound":2,
		"lowerBound":0,
		"changeFactor": 1
	}
]


//"_comment": "comment text goes here...",
//这种注释是非法的,但是还是用了…………
//毕竟是自己解析
//值域为[lowerBound,upperBound]