elasticsearch 使用scroll查询，为什么每次查询结果相同

各位大大们，求解答

最有可能的就是你每次的scroll  id 并没有发生改变，最好贴下代码

通过你的接口/option/_search?scroll=5m&size=10&scroll_id=cXVlcnlBbmRGZXRjaDsxOzQ3NjMyOTotcXVJX0pVR1JpZTB3RzE0UE5wTEN3OzA7， 返回值里面有下个一个scroll_id，需要替换下再继续查询,下面是我的python代码

   @classmethod

    def scroll_search(cls, es_url, index, query_json, scroll="5m", search_type='scan', **kwargs):

        es_client = Elasticsearch(es_url, timeout=settings.ES_TIMEOUT)

        hits = []

        try:

            resp_json = es_client.search(index=index, body=query_json, pretty=True, scroll=scroll, search_type=search_type, **kwargs)

            sid = resp_json['_scroll_id']

            scroll_size = resp_json["hits"]["total"]

            while scroll_size > 0:

                page = es_client.scroll(scroll_id=sid, scroll=scroll)

                sid = page['_scroll_id']

                scroll_size = len(page['hits']['hits'])

                if scroll_size > 0:

                    hits.extend(page["hits"]["hits"])

            return hits

        except Exception, e:

            logger.exception(e)

        return None