解决 Elasticsearch 分页查询记录超过10000时异

问题一: 查询结果中 hits.total.value 值最大为10000的限制

解决方法:
请求时设置 "track_total_hits": true

1. Rest 请求设置方法:

curl -X POST "http://192.168.1.101:9200/my_index/_search?pretty" -H 'Content-Type: application/json' -d'
{
  "track_total_hits": true
  "query": {
    "match_all": {}
  },
  "sort": [
    {
      "timestamp": {
        "order": "desc"
      }
    }
  ]
}
'

2. API 设置方法:

SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder().trackTotalHits(true);

问题二: 分页查询 from 大于 10000 时的数据异常

异常信息

...
Caused by: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=Result window is too large, from + size must be less than or equal to: [10000] but was [10100]. 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.]]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=Result window is too large, from + size must be less than or equal to: [10000] but was [10100]. 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.]];
...

解决方法:
修改 max_result_window 设置的最大索引值，注意以 put 方式提交

curl -X PUT "http://192.168.1.101:9200/my_index/_settings?pretty" -H 'Content-Type: application/json' -d'
{
  "index":{
    "max_result_window":1000000
  }
}
'