elasticsearch - invalid_argument_exception未找到搜索字段的映射

Question

我正在使用5.1版本学习ElasticSearch。我有一个索引“mycontent”和一个类型“simpledocument”。我在尝试检查simpledocument类型的建议/完成功能时遇到错误“illegal_argument_exception，未找到字段映射”。详细信息如下:

GET _search
{
  "suggest":{
    "my-suggestion":{
      "prefix":"ap",
      "completion":{
        "field":"suggest"
      }
    }
  }
}

这给了我响应:

{
  "took": 4,
  "timed_out": false,
  "_shards": {
    "total": 6,
    "successful": 5,
    "failed": 1,
    "failures": [
      {
        "shard": 0,
        "index": ".kibana",
        "reason": {
          "type": "illegal_argument_exception",
          "reason": "no mapping found for field [suggest]"
        }
      }
    ]
  },
......

映射中确实包含“建议”字段:

GET _mapping/simpledocument

{
  "mycontent": {
    "mappings": {
      "simpledocument": {
        "properties": {
          "description": {
            "type": "text",
            "fields": {
              "keyword": {
                "type": "keyword",
                "ignore_above": 256
              }
            }
          },
          "id": {
            "type": "integer"
          },
          "name": {
            "type": "text",
            "fields": {
              "keyword": {
                "type": "keyword",
                "ignore_above": 256
              }
            }
          },
          "path": {
            "type": "keyword"
          },
          "suggest": {
            "type": "completion",
            "analyzer": "simple",
            "preserve_separators": true,
            "preserve_position_increments": true,
            "max_input_length": 50
          },
          "tags": {
            "type": "keyword"
          }
        }
      }
    }
  }
}

这是一个示例文档:

GET mycontent/simpledocument/7
{
  "_index": "mycontent",
  "_type": "simpledocument",
  "_id": "7",
  "_version": 1,
  "found": true,
  "_source": {
    "name": "Suggested Document",
    "description": "this document does not contain a lot of content. Mainly used to test the suggest feature.",
    "tags": [
      "suggest",
      "document"
    ],
    "suggest": [
      "and",
      "design",
      "api"
    ]
  }
}

有人可以帮我弄清楚我的错误吗？为什么存在映射时为什么显示“未找到映射”？

Answer 1

GET _search将搜索所有索引，这是错误的意思，它表示索引.kibana没有suggest字段，因为您的GET _mapping/simpledocument，建议字段仅应存在于simpedocument 索引类型中。

所以也许您需要这样做:

GET mycontent/simpledocument/_search
{
 "suggest":{
 "my-suggestion":{
 "prefix":"ap",
 "completion":{
 "field":"suggest"
 }
 }
 }
}