dataset/testAlbum/floatSchema.json

{
  "columns": {
    "image": {
      "type": "uint8",
      "rank": 1
    },
    "label" : {
      "type": "string",
      "rank": 1
    },
    "id" : {
      "type": "int64",
      "rank": 0
    },
    "_priority" : {
      "type": "float64",
      "rank": 0
    }
  }
}