问ElasticSearch:不推荐在批量请求中指定类型

EN

"[types removal] Specifying types in bulk requests is deprecated."]

    BulkRequest request = new BulkRequest();

    for(Item item : items) {
        IndexRequest indexRequest = new IndexRequest(INDEX_NAME, DOC_TYPE, item.getIdentifier());
        indexRequest
                .opType(DocWriteRequest.OpType.INDEX) // Index the source. If there an existing document with the id, it will be replaced.
                .source(JsonUtility.toJson(item), XContentType.JSON);

        request.add(indexRequest);
    }

    elastic.bulk(request, RequestOptions.DEFAULT);