es的批量导入

　　因为使用的是容器，所以，这里不使用文件的方式。目前，有一个疑问，发现bulk进入的数据，字段类型是没有问题的，之前没有设置mapping的情况下。

1.批量导入

　　Bulk：ES提供了⼀个叫 bulk 的API 来进⾏批量操作

2.示例

POST /_bulk
{"index": {"_index": "book","_type": "_doc","_id": 1}}
{"name": "权⼒的游戏"}
{"index": {"_index": "book","_type": "_doc","_id": 2}}
{"name": "疯狂的⽯头"}

　　效果：

{
  "took" : 0,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 2,
      "relation" : "eq"
    },
    "max_score" : 1.0,
    "hits" : [
      {
        "_index" : "book",
        "_type" : "_doc",
        "_id" : "1",
        "_score" : 1.0,
        "_source" : {
          "name" : "权⼒的游戏"
        }
      },
      {
        "_index" : "book",
        "_type" : "_doc",
        "_id" : "2",
        "_score" : 1.0,
        "_source" : {
          "name" : "疯狂的⽯头"
        }
      }
    ]
  }
}

　　

3.截图

　　

二：测试上面的疑问

1.测试

PUT /test/_doc/1
{
  "name":"tom",
  "age":10
}

GET /test/_mapping

　　结果：

{
  "test" : {
    "mappings" : {
      "properties" : {
        "age" : {
          "type" : "long"
        },
        "name" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
          }
        }
      }
    }
  }
}

　　

2.解释

　　这是es中的 multi-fields.：https://www.elastic.co/guide/en/elasticsearch/reference/current/multi-fields.html

　　

3.官网的说明

　　It is often useful to index the same field in different ways for different purposes.

　　This is the purpose of multi-fields.

　　For instance, a string field could be mapped as a text field for full-text search, and as a keyword field for sorting or aggregations