ES同时具备模糊查询和精确查询 重建索引过程

1. 创建索引，副本设置为0，将加快数据迁移的时间
PUT /myindex
{
  "settings": {
    "number_of_shards": 2,
   "number_of_replicas": 0,
   "refresh_interval": -1
  },
  "mappings": {
    "properties": {
      "name":{
        "type": "text"
      },
      "age":{
        "type": "long"
      }
    }
  }
}
2.添加数据
PUT /myindex/_doc/1
{
  "name":"lengmeng",
  "age":25
}

PUT /myindex/_doc/2
{
  "name":"李四",
  "age":20
}

3.创建索引

创建new_keyword字段

PUT /myindex_new
{
  "settings": {
    "number_of_shards": 2,
    "number_of_replicas": 0
  },
  "mappings": {
    "properties": {
      "name": {
        "type": "text",
        "fields": {
          "new_keyword": {
            "type": "keyword",
            "ignore_above": 256
          }
        }
      },
      "age": {
        "type": "long"
      }
    }
  }
}

4.数据迁移
POST /_reindex?wait_for_completion=false
{
  "source": {
    "index": "myindex"
  },
  "dest": {
    "index": "myindex_new"
  }
}
5.删除老索引
DELETE myindex
6.重命名
POST _aliases 
{
  "actions": [
    {
      "add": {
        "index": "myindex_new",
        "alias": "myindex"
      }
    }
  ]
}

7.设置副本和修改refresh_interval
PUT /myindex/_settings
{
  "number_of_replicas": 1,
  "refresh_interval": "1s"
}

8.通过别名再精确查询
POST myindex/_search

POST myindex/_search
{
  "query": {
    "term": {
      "name.new_keyword": "李四"
    }
  }
}