6.x使用 reindex失敗

使用reindex API
POST _reindex
{
    "source": {
    "remote": {
      "host": "http://192.168.138.85:9200"
    },
    "index": "flow_collector-2018.05.04"
  },
  "dest": {
    "index": "flow_collector-2018.05.04"
  }
}
 
回報錯誤
{
  "error": {
    "root_cause": [
      {
        "type": "parsing_exception",
        "reason": "[hit] failed to parse [_source]",
        "line": 1,
        "col": 356
      }
    ],
    "type": "exception",
    "reason": "Error parsing the response, remote is likely not an Elasticsearch instance",
    "caused_by": {
      "type": "parsing_exception",
      "reason": "[search_response] failed to parse field [hits]",
      "line": 1,
      "col": 356,
      "caused_by": {
        "type": "parsing_exception",
        "reason": "[hits] failed to parse field [hits]",
        "line": 1,
        "col": 356,
        "caused_by": {
          "type": "parsing_exception",
          "reason": "[hit] failed to parse field [_source]",
          "line": 1,
          "col": 356,
          "caused_by": {
            "type": "parsing_exception",
            "reason": "[hit] failed to parse [_source]",
            "line": 1,
            "col": 356,
            "caused_by": {
              "type": "json_parse_exception",
              "reason": "Duplicate field '8'\n at [Source: org.apache.http.nio.entity.ContentInputStream@97d2840; line: 1, column: 376]"
            }
          }
        }
      }
    }
  },
  "status": 500
}
 
想詢問一下該如何解決
謝謝