in:
  type: file
  path_prefix: "example/sample"
  parser:
    type: jsonl
    columns:
      - {name: "foo", type: "string"}
      - {name: "bool", type: "boolean"}
      - {name: "bool_str", type: "boolean"}
      - {name: "int", type: "string"}
      - {name: "int_str", type: "string"}
      - {name: "time", type: "timestamp", format: '%Y-%m-%d %H:%M:%S'}
      - {name: "double", type: "double"}
      - {name: "double_str", type: "string"}
      - {name: "array", type: "json"}
    column_options:
      bool_str: {type: "boolean"}
      int_str: {type: "long"}
      double_str: {type: "double"}
out:
  type: stdout