{
  "@timestamp": "2018-05-03T20:58:17.379Z",
  "metricset": {
    "rtt": 2487,
    "namespace": "elasticsearch.cluster.pending_task",
    "name": "pending_tasks",
    "module": "elasticsearch",
    "host": "localhost:9200"
  },
  "elasticsearch": {
    "cluster": {
      "pending_task": {
        "insert_order": 47,
        "priority": "HIGH",
        "source": "put-mapping",
        "time_in_queue.ms": 34
      }
    }
  },
  "beat": {
    "name": "host.example.com",
    "hostname": "host.example.com"
  }
}