elasticsearch6，bulk批量插入会有数据丢失

BulkRequestBuilder requestBuilder =getClient().prepareBulk()

insertMapList.forEach(mapData -> {

    IndexRequestBuilder indexRequestBuilder = getClient().prepareIndex("demo", "demo", String.valueOf(mapData.getId()));

    indexRequestBuilder.setSource(JsonUtils.toJSONWithDateString(mapData.getData()), XContentType.JSON);

    requestBuilder.add(indexRequestBuilder);

});

BulkResponse result = requestBuilder.execute().actionGet(20000, TimeUnit.MILLISECONDS);



getClient().admin().indices().refresh(refreshRequest(“demo”)).actionGet();