_reindex

POST _reindex
{
  "source": {
    "index": "test"
  },
  "dest": {
    "index": "test_new"
  }
}

{
  "took": 6162,
  "timed_out": false,
  "total": 3,
  "updated": 0,
  "created": 3,
  "deleted": 0,
  "batches": 1,
  "version_conflicts": 0,
  "noops": 0,
  "retries": {
    "bulk": 0,
    "search": 0
  },
  "throttled_millis": 0,
  "requests_per_second": -1,
  "throttled_until_millis": 0,
  "failures": []
}