ES相关问题备忘录

Posted 2023-02-03 viewgroup

ES备忘录

• ES备忘录
• • 命令相关
  • 设置相关

ES备忘录

学习ES途中，记录相关问题，获取成长积累
ES官方文档

命令相关

1. CAT API
2. INDEX API
3. SEARCH API

设置相关

1. 最大返回数量问题
   ES 默认返回10000 条数据，超过10000条，要么使用scroll 进行查询，要么设置最大返回值，否则报如下错误

“reason”: “Result window is too large, from + size must be less than or equal to: [10000] but was [10001]. 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.”

设置最大数量可以按照如下方法进行调试

/indexName/_settings
“max_result_window”:“1000000000”

2. 最大聚合问题
   ES针对聚合做了性能优化，默认不允许聚合数据过大，如果聚合体返回数据过大，返回如下错误

“error”:“root_cause”:[“type”:“too_many_buckets_exception”,“reason”:“Trying to create too many buckets. Must be less than or equal to: [10000] but was [10001]. This limit can be set by changing the [search.max_buckets] cluster level setting.”,“max_buckets”:10000],“type”:“search_phase_execution_exception”,“reason”:“all shards failed”,“phase”:“query”,“grouped”:true,“failed_shards”:[“shard”:0,“index”:“recommend”,“node”:“FJazr4BeSqGp5x8hS0UDxw”,“reason”:“type”:“too_many_buckets_exception”,“reason”:“Trying to create too many buckets. Must be less than or equal to: [10000] but was [10001]. This limit can be set by changing the [search.max_buckets] cluster level setting.”,“max_buckets”:10000],“status”:503

此时可以通过错误中的提示，进行对应的参数设置

/_cluster/settings
“persistent”: “search.max_buckets”: 100000000