Elasticsearch Pagination From - Size Result window is too large答案

【问题标题】：Elasticsearch Pagination From - Size Result window is too largeElasticsearch Pagination From - Size Result window is too large
【发布时间】：2018-09-16 10:36:39
【问题描述】：

我想为我的文档创建页面，每个页面应该有 1000 个结果。

文档大小：95.000 文档

所以从产品编号 10k 开始，我想从那个点得到 1K 的结果，但是，使用这个查询，我得到了下面提到的错误

查询：

this.es.search({
  index: indexName,
  type: type,
  from: 10000,
  size: 1000,
  body: {}
});

错误：

{
    "msg": "[query_phase_execution_exception] Result window is too large, from + size must be less than or equal to: [10000] but was [16000]. See the scroll api for a more efficient way to request large data sets. This limit can be set by changing the [index.max_result_window] index level setting.",
    "path": "/products/Product/_search",
    "query": {},
    "body": "{\"from\":10000,\"size\":1000}",
    "statusCode": 500,
    "response": "{\"error\":{\"root_cause\":[{\"type\":\"query_phase_execution_exception\",\"reason\":\"Result window is too large, from + size must be less than or equal to: [10000] but was [16000]. See the scroll api for a more efficient way to request large data sets. This limit can be set by changing the [index.max_result_window] index level setting.\"}],\"type\":\"search_phase_execution_exception\",\"reason\":\"all shards failed\",\"phase\":\"query\",\"grouped\":true,\"failed_shards\":[{\"shard\":0,\"index\":\"products\",\"node\":\"bTGkra6dTB-0Z_8jVUNByQ\",\"reason\":{\"type\":\"query_phase_execution_exception\",\"reason\":\"Result window is too large, from + size must be less than or equal to: [10000] but was [16000]. See the scroll api for a more efficient way to request large data sets. This limit can be set by changing the [index.max_result_window] index level setting.\"}}]},\"status\":500}"
}

如何增加分页结果/限制？

也欢迎任何其他方法，谢谢。

【问题讨论】：

标签： node.js elasticsearch elasticsearch-plugin elasticsearch-5

【解决方案1】：

如错误所示，Elastic 将仅显示 10000 行。

所以要显示更多的数字，您需要使用scroll 函数

https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-scroll.html

可以在此处找到使用滚动的 js 搜索示例。

async await with elasticsearch search/scroll

【讨论】：

【解决方案2】：

基于elasticsearch文档https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-from-size.html

注意from+size不能大于index.max_result_window 索引设置，默认为 10,000

您也可以尝试使用scroll 或searchAfter。更实时的查询，searchAfter更合适。

滚动文档 https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-scroll.html

搜索后文档 https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-search-after.html

【讨论】：

【解决方案3】：

好吧，我可以使用这个 CURL 增加分页限制

curl -XPUT "http://localhost:9200/my_index/_settings" -d '{ "index" : { "max_result_window" : 500000 } }'

【讨论】：

【解决方案4】：

如下增加max_result_window，就可以了

PUT indexName/_settings
{
  "index": {
    "max_result_window": 10000000
  }
}

【讨论】：