Creating a File WIth Array Columns

Array

Full example here

{
  "name": "person",
  "schemaType": "repeatedGroup",
  "fields": [
    {
      "name": "name",
      "schemaType": "optional",
      "physicalType": "BINARY",
      "logicalType": "STRING"
    },
    {
      "name": "age",
      "schemaType": "required",
      "physicalType": "INT32"
    }
  ],
  "data": [
    {
      "name": "Alice",
      "age": 30
    },
    {
      "name": "Bob",
      "age": 25
    }
  ]
}