{
  "tasks": [
    {
      "name": "pull_data_a",
      "max_retries": 3,
      "retry_delay_seconds": 600,
      "command": "/path/to/pull.sh --date {DATE} --source {SOURCE}_A",
      "verification_command": "/path/to/pull_verify.sh --date {DATE} --source {SOURCE}_A",
      "timeout_seconds": 30
      "children": [ "merge_data" ]
    },
    {
      "name": "pull_data_b",
      "max_retries": 3,
      "retry_delay_seconds": 600,
      "command": "/path/to/pull.sh --date {DATE} --source {SOURCE}_B",
      "verification_command": "/path/to/pull_verify.sh --date {DATE} --source {SOURCE}_B",
      "timeout_seconds": 30
      "children": [ "merge_data" ]
    },
    {
      "name": "merge_data",
      "command": "/path/to/merge.sh --left {SOURCE}_A --right {SOURCE}_B"
    }
  ]
}