es query fileter 查询

 

 BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery()

        .should(QueryBuilders.termsQuery(ES_FIELD.CATEGORY_ID, categoryIds))

        .should(QueryBuilders.termsQuery(ES_FIELD.TAG_TAG_ID, tagIds))

        .must(QueryBuilders.termsQuery(ES_FIELD.TAG_CONFIDENT_LEVEL, ConfidentEnum.HIGH.toString(),

            ConfidentEnum.MIDDLE.toString()));



    return QueryBuilders.boolQuery()

        .filter(boolQueryBuilder);

returned 1 warnings: [299 Elasticsearch-6.8.3-0c48c0e "Should clauses in the filter context will no longer automatically set the minimum should match to 1 in the next major version.
 You should group them in a [filter] clause or explicitly set [minimum_should_match] to 1 to restore this behavior in the next major version."]
 
请问这是什么意思呢？