{
  "field": "category",
  "partitions": [
    {
      "value": "1",
      "rows": 50,
      "json": "by/category/1.json"
    },
    {
      "value": "2",
      "rows": 50,
      "json": "by/category/2.json"
    },
    {
      "value": "3",
      "rows": 50,
      "json": "by/category/3.json"
    },
    {
      "value": "ALL",
      "rows": 50,
      "json": "by/category/all.json"
    }
  ]
}