ES关键字排序报错 reason=Fielddata is disabled on text fields by default. Set fielddata=true on 关键字 in order

在使用 java 编写 ES 的查询接口的时候，需要根据某关键字进行排序并返回数据，但是在排序的时候报错如下：

ElasticsearchStatusException[Elasticsearch exception [type=search_phase_execution_exception, reason=all shards failed]
]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=Fielddata is disabled on text fields by default. Set fielddata=true on [subTaskId] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead.]]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=Fielddata is disabled on text fields by default. Set fielddata=true on [subTaskId] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead.]];
	at org.elasticsearch.rest.BytesRestResponse.errorFromXContent(BytesRestResponse.java:177)
	at org.elasticsearch.client.RestHighLevelClient.parseEntity(RestHighLevelClient.java:1793)
	at org.elasticsearch.client.RestHighLevelClient.parseResponseException(RestHighLevelClient.java:1769)
	at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1606)
	at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1563)

使用 谷歌的 Elastic Search Head 插件，然后执行以下命令：

{
  "properties": {
    "subTaskId": {
      "type": "text",
      "fielddata": true
    }
  }
}

然后点击左下角的 Request。

问题虽小，但是也挺烦心的。

Smileyan
2021.11.19 17:37