解决 Elasticsearch 超过 10000 条无法查询的问题

问题描述

分页查询场景，当查询记录数超过 10000 条时，会报错。

使用 Kibana 的 Dev Tools 工具查询 从第 10001 条到 10010 条数据。

查询语句如下：

GET alarm/_search
{
  "from": 10000,
  "size": 10
}

查询结果，截图如下：

报错信息如下：

{
  "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 [10010]. 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": "alarm",
        "node": "hdLJanxRTbmF52eK6-FFgg",
        "reason": {
          "type": "query_phase_execution_exception",
          "reason": "Result window is too large, from + size must be less than or equal to: [10000] but was [10010]. 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
}

原因分析

Elasticsearch 默认查询结果最多展示前 10000 条数据。

解决方案

按照报错信息里的提示，可以看到，通过设置 max_result_window 的值来调整显示数据的大小：

This limit can be set by changing the [index.max_result_window] index level setting.

两种方式可以实现：

【方式一】

修改Elasticsearch 集群中的 配置文件 config/elasticsearch.yml

在配置文件最后增加一行，如下：

max_result_window: 200000000

【方式二】（推荐）

具体操作命令，如下（比如，设置可查询 200000000 条数据，其中 alarm 是index名称）：

PUT alarm/_settings
{
  "max_result_window" : 200000000
} 

命令执行效果，截图如下：

再次执行查询语句，即可正常查询，效果截图如下：

原文地址：https://www.cnblogs.com/miracle-luna/p/11153088.html