exec/java-exec/src/test/resources/mergerecv/empty_batch.json

{
  head:{
    type:"APACHE_DRILL_PHYSICAL",
    version:"1",
    generator:{
        type:"manual"
    }
  },
  graph:[
    {
      @id:1,
      pop:"mock-scan",
      url: "http://apache.org",
      entries:[
        {records: 100000, types: [
          {name: "blue", type: "BIGINT", mode: "OPTIONAL"},
          {name: "red", type: "BIGINT", mode: "OPTIONAL"},
          {name: "green", type: "BIGINT", mode: "OPTIONAL"}
        ]},
        {records: 0, types: [
          {name: "blue", type: "BIGINT", mode: "OPTIONAL"},
          {name: "red", type: "BIGINT", mode: "OPTIONAL"},
          {name: "green", type: "BIGINT", mode: "OPTIONAL"}
        ]}
      ]
    },
    {
      @id: 2,
      child: 1,
      pop: "external-sort",
      orderings: [ {expr: "blue", order:"DESC"},  {expr: "red", order:"DESC"} ]
    },
    {
      @id: 3,
      child: 2,
      pop:"selection-vector-remover"
    },
    {
      @id: 4,
      child: 3,
      pop: "single-merge-exchange",
      orderings: [ {expr: "blue", order:"DESC"},  {expr: "red", order:"DESC"}  ]
    },
    {
      @id: 5,
      child: 4,
      pop: "screen"
    }
  ]
}