springboot中设置fielddata = true?报错

我用了elasticsearch6.5.4，查询的时候报错：
Fielddata is disabled on text fields by default. Set fielddata=true on [tags] in order to load fielddata in memory by uninverting the inverted index.

我在tags字段设置了fielddata=true也没用

@Field(type = FieldType.Text, fielddata = true)
private List<String> tags;

我知道elasticsearch6之后的版本对fielddata设置默认值为false，问题是我在字段中设置它为true了啊，有没有大佬帮忙解惑一下

 @Id  // 主键
    private String id;
    @Field(type = FieldType.Long)
    private Long blogId; // Blog 实体的 id
    @Field(type = FieldType.Text,searchAnalyzer = "ik_smart", analyzer = "ik_smart", fielddata = true)
    private String title;
    @Field(type = FieldType.Text,searchAnalyzer = "ik_smart", analyzer = "ik_smart", fielddata = true)
    private String summary;
    @Field(type = FieldType.Text,searchAnalyzer = "ik_smart", analyzer = "ik_smart", fielddata = true)
    private String content;
    @Field(type = FieldType.Keyword, index = false)  // 不做全文检索字段
    private String username;
    @Field(type = FieldType.Text, index = false, fielddata = true)  // 不做全文检索字段
    private String avatar;
    @Field(type = FieldType.Date, index = false)  // 不做全文检索字段
    private Timestamp createTime;
    @Field(type = FieldType.Integer, index = false)  // 不做全文检索字段
    private Integer readSize = 0; // 访问量、阅读量
    @Field(type = FieldType.Integer, index = false)  // 不做全文检索字段
    private Integer voteSize = 0;  // 点赞量
    @Field(type = FieldType.Text, fielddata = true)
    private List<String> tags;  // 标签

用的是springboot2.X, spring-data-elasticsearch3.0.7 , 被这个问题困扰了很久，望解答