{
  "type": "record", 
  "name": "Rec1",
  "fields" : [
    {"name": "val1", "type": "long"},           
    {"name": "val2", "type": {
          "type": "record", 
          "name": "Rec2",
          "fields" : [
            {"name": "inval1", "type": "double"},           
            {"name": "inval2", "type": "int" }
          ]
      }
    },
    {"name": "val3", "type": "float"}
  ]
}