Fielddata is disabled on text fields by default报错

学习es的时候，进行分组查询

GET /ecommerce/product/_search
{
  "aggs": {
    "group_by_tags": {
      "terms": {
        "field": "tags"
      }
    }
  }
}

报错：
按照教程修改：

PUT /ecommerce/_mapping/product
{
  "properties": {
    "tags": {
      "type": "text",
      "fielddata": true
    }
  } 
}

还是有问题：
后面找到资料,加入关键字keyword即可搜索：

GET /ecommerce/product/_search
{
  "aggs": {
    "group_by_tags": {
      "terms": {
        "field": "tags.keyword"
      }
    }
  }
}

问题解决