Elasticsearch7.x——索引统计(_stats)详解

傷城~ 2024-02-21 10:02 32阅读 0赞

#### 目录 ####

*  索引统计
 *   *  1、docs - 文档数量
     *  2、store - 索引存储大小
     *  3、indexing - 索引操作统计信息
     *  4、get - 索引get统计信息
     *  5、search - 索引search统计信息
     *  6、search - segments - 段的内存使用情况
     *  7、completion - 自动提示统计信息
     *  8、fielddata - 统计信息
     *  9、flush - 刷新到磁盘的统计信息
     *  10、merge - 合并统计信息
     *  11、refresh - 统计信息
     *  12、request\_cache - 统计信息
     *  13、warmer - 分片预热统计信息
     *  14、translog - 统计信息
     *  15、recovery - 恢复的统计信息

## 索引统计 ##

### 1、docs - 文档数量 ###

可以不指定索引 、也可以指定具体索引、也可以指定模糊索引：

//获取所有索引的docs数量
    GET /_stats/docs
    
    //获取指定索引的docs数量
    GET /bank/_stats/docs
    
    //获取同类索引的docs数量
    GET /log-*/_stats/docs

返回结果：

{
        
      "_shards" : {
        
        "total" : 2,
        "successful" : 1,
        "failed" : 0
      },
      "_all" : {
        
        "primaries" : {
        
          "docs" : {
        
            "count" : 1000,
            "deleted" : 2
          }
        },
        "total" : {
        
          "docs" : {
        
            "count" : 1000,
            "deleted" : 2
          }
        }
      },
      "indices" : {
        
        "bank" : {
        
          "uuid" : "1Ny9g32eTSutDG8gfLzQZg",
          "primaries" : {
        
            "docs" : {
        
              "count" : 1000,
              "deleted" : 2
            }
          },
          "total" : {
        
            "docs" : {
        
              "count" : 1000,
              "deleted" : 2
            }
          }
        }
      }
    }

*  **\_shards**：分片信息：总数、成功返回数、失败返回数
 *  **\_all**：统计的总信息
    
     *  primaries：主分片上的统计信息
     *  total ： 所有分片（主分片+副本分片）上的统计信息
 *  **indices**：索引维度统计信息详情

### 2、store - 索引存储大小 ###

//获取所有索引的store大小
    GET /_stats/store
    //获取所有索引的store大小
    GET /bank/_stats/store
    //获取同类索引的store大小
    GET /log-*/_stats/store

返回：单位字节

{
        
      "_shards": {
        
        "total": 3565,
        "successful": 3565,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "store": {
        
            "size_in_bytes": 34003971241
          }
        },
        "total": {
        
          "store": {
        
            "size_in_bytes": 67412754240
          }
        }
      },
      "indices": {
        
        "book-20210107": {
        
          "uuid": "m0txeABPUtmNQ3u-VgIRUg",
          "primaries": {
        
            "store": {
        
              "size_in_bytes": 5470681
            }
          },
          "total": {
        
            "store": {
        
              "size_in_bytes": 10941362
            }
          }
        },
        ...
      }
    }

### 3、indexing - 索引操作统计信息 ###

索引操作信息（CRUD）统计

//获取所有索引的indexing信息
    GET /_stats/indexing
    //获取所有索引的indexing信息
    GET /bank/_stats/indexing
    //获取同类索引的indexing信息
    GET /log-*/_stats/indexing

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "indexing": {
        
          	// 索引操作总次数
            "index_total": 3093133,
            // 索引操作总耗时
            "index_time_in_millis": 349332,
            // 当前正在执行索引操作的个数
            "index_current": 0,
            // 失败的索引操作次数
            "index_failed": 0,
            // 执行删除索引操作的次数
            "delete_total": 0,
            // 删除索引操作总耗时
            "delete_time_in_millis": 0,
            // 当前正在执行删除索引操作的个数
            "delete_current": 0,
            // 空更新总次数（检测到空更新的次数）
            "noop_update_total": 0,
            // 索引是否处在merge throttling control（合并节流控制状态）
            "is_throttled": false,
            // 索引处在merge throttling control(合并节流状态)的时间开销
            "throttle_time_in_millis": 0
          }
        },
        "total": {
        
          "indexing": {
        
            "index_total": 6986261,
            "index_time_in_millis": 783341,
            "index_current": 0,
            "index_failed": 0,
            "delete_total": 0,
            "delete_time_in_millis": 0,
            "delete_current": 0,
            "noop_update_total": 0,
            "is_throttled": false,
            "throttle_time_in_millis": 0
          }
        }
      },
      "indices": {
        
        "log-20210109": {
        
          "uuid": "_5G171lSRsGez7_tKtQyDw",
          "primaries": {
        
            "indexing": {
        
              "index_total": 221821,
              "index_time_in_millis": 25891,
              "index_current": 0,
              "index_failed": 0,
              "delete_total": 0,
              "delete_time_in_millis": 0,
              "delete_current": 0,
              "noop_update_total": 0,
              "is_throttled": false,
              "throttle_time_in_millis": 0
            }
          },
          "total": {
        
            "indexing": {
        
              "index_total": 443642,
              "index_time_in_millis": 47894,
              "index_current": 0,
              "index_failed": 0,
              "delete_total": 0,
              "delete_time_in_millis": 0,
              "delete_current": 0,
              "noop_update_total": 0,
              "is_throttled": false,
              "throttle_time_in_millis": 0
            }
          }
        },
        ...
      }
    }

### 4、get - 索引get统计信息 ###

get api 操作统计信息，报错missing统计。

//获取所有索引的get信息
    GET /_stats/get
    //获取所有索引的get信息
    GET /bank/_stats/get
    //获取同类索引的get信息
    GET /log-*/_stats/get

{
        
      "_shards": {
        
        "total": 2,
        "successful": 2,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "get": {
        
            //  get api总调用次数
            "total": 0,
            // get api总耗时。
            "time_in_millis": 0,
            // 命中的次数
            "exists_total": 0,
            // 命中的操作总耗时
            "exists_time_in_millis": 0,
            // 未命中的总次数
            "missing_total": 0,
            // 未命中的操作的总耗时
            "missing_time_in_millis": 0,
            // 当前正在执行的个数
            "current": 0
          }
        },
        "total": {
        
          "get": {
        
            "total": 0,
            "time_in_millis": 0,
            "exists_total": 0,
            "exists_time_in_millis": 0,
            "missing_total": 0,
            "missing_time_in_millis": 0,
            "current": 0
          }
        }
      },
      "indices": {
        
        "book-20210109": {
        
          "uuid": "_SRsG5Ge171lQz7_tKtyDw",
          "primaries": {
        
            "get": {
        
              "total": 0,
              "time_in_millis": 0,
              "exists_total": 0,
              "exists_time_in_millis": 0,
              "missing_total": 0,
              "missing_time_in_millis": 0,
              "current": 0
            }
          },
          "total": {
        
            "get": {
        
              "total": 0,
              "time_in_millis": 0,
              "exists_total": 0,
              "exists_time_in_millis": 0,
              "missing_total": 0,
              "missing_time_in_millis": 0,
              "current": 0
            }
          }
        },
        ...
      }
    }

### 5、search - 索引search统计信息 ###

搜索统计信息，包括建议统计信息。

//获取所有索引的search信息
    GET /_stats/search
    //获取所有索引的search信息
    GET /bank/_stats/search
    //获取同类索引的search信息
    GET /log-*/_stats/search

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "search": {
        
            // 正在打开的查询上下文个数
            "open_contexts": 0,
            // 查询出来的总数据条数
            "query_total": 5957,
            // 查询阶段所耗费的时间
            "query_time_in_millis": 26508,
            // 当前正在查询个数
            "query_current": 0,
            // Fetch操作的次数
            "fetch_total": 689,
            // Fetch阶段总耗时时间
            "fetch_time_in_millis": 659,
            // 正在fetch的次数
            "fetch_current": 0,
            // 通过scroll api查询数据总条数
            "scroll_total": 305,
            // 通过scroll api总耗时时间
            "scroll_time_in_millis": 28225774,
            // 当前滚动API调用次数
            "scroll_current": 0,
            // 通过suggest api获取的推荐总数量
            "suggest_total": 0,
            // suggest总耗费时间
            "suggest_time_in_millis": 0,
            // 正在执行suggest api的个数
            "suggest_current": 0
          }
        },
        "total": {
        
          "search": {
        
            "open_contexts": 0,
            "query_total": 12745,
            "query_time_in_millis": 48163,
            "query_current": 0,
            "fetch_total": 1573,
            "fetch_time_in_millis": 1796,
            "fetch_current": 0,
            "scroll_total": 744,
            "scroll_time_in_millis": 68167255,
            "scroll_current": 0,
            "suggest_total": 0,
            "suggest_time_in_millis": 0,
            "suggest_current": 0
          }
        }
      },
      "indices": {
        
        "book-20210109": {
        
          "uuid": "RsGez7_5G171lS_tKtQyDw",
          "primaries": {
        
            "search": {
        
              "open_contexts": 0,
              "query_total": 700,
              "query_time_in_millis": 2054,
              "query_current": 0,
              "fetch_total": 0,
              "fetch_time_in_millis": 0,
              "fetch_current": 0,
              "scroll_total": 1,
              "scroll_time_in_millis": 117920,
              "scroll_current": 0,
              "suggest_total": 0,
              "suggest_time_in_millis": 0,
              "suggest_current": 0
            }
          },
          "total": {
        
            "search": {
        
              "open_contexts": 0,
              "query_total": 1399,
              "query_time_in_millis": 4168,
              "query_current": 0,
              "fetch_total": 0,
              "fetch_time_in_millis": 0,
              "fetch_current": 0,
              "scroll_total": 1,
              "scroll_time_in_millis": 117920,
              "scroll_current": 0,
              "suggest_total": 0,
              "suggest_time_in_millis": 0,
              "suggest_current": 0
            }
          }
        },
        ...
      }
    }

### 6、search - segments - 段的内存使用情况 ###

段的内存使用情况。

//获取所有索引的segments信息
    GET /_stats/segments
    //获取所有索引的segments信息
    GET /bank/_stats/segments
    //获取同类索引的segments信息
    GET /log-*/_stats/segments

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "segments": {
        
            // 该索引目前拥有的总段数
            "count": 169,
            // 该索引缓存在内存中字节数
            "memory_in_bytes": 4404644,
            // 倒排索引(term)缓存在内中所占字节数
            "terms_memory_in_bytes": 3723502,
            // 该索引定义为stored_fields字段在内存中缓存的字节数
            "stored_fields_memory_in_bytes": 574016,
            // 该索引term_vectors(词向量)在内存中所占字节数量
            "term_vectors_memory_in_bytes": 0,
            // 该索引存储对应norms=true的字段当前在内存中缓存字节数
            "norms_memory_in_bytes": 10816,
            // 与地理位置相关的缓存数据
            "points_memory_in_bytes": 67946,
            // 设置为doc_values缓存在内存中的字节数（doc_values,列式存储）
            "doc_values_memory_in_bytes": 28364,
            // 用于优化索引写的缓存（减少写磁盘的频率
            "index_writer_memory_in_bytes": 768320,
            // 关于文档的版本映射所占内存大小
            "version_map_memory_in_bytes": 0,
            // fixed_bit_set内存，专门用来做nested查询的
            "fixed_bit_set_memory_in_bytes": 0,
            // es内部当前的自增ID
            "max_unsafe_auto_id_timestamp": -1,
            "file_sizes": {
        
            }
          }
        },
        "total": {
        
          "segments": {
        
            "count": 330,
            "memory_in_bytes": 8775500,
            "terms_memory_in_bytes": 7417480,
            "stored_fields_memory_in_bytes": 1147528,
            "term_vectors_memory_in_bytes": 0,
            "norms_memory_in_bytes": 21120,
            "points_memory_in_bytes": 136188,
            "doc_values_memory_in_bytes": 53184,
            "index_writer_memory_in_bytes": 768320,
            "version_map_memory_in_bytes": 0,
            "fixed_bit_set_memory_in_bytes": 0,
            "max_unsafe_auto_id_timestamp": -1,
            "file_sizes": {
        
            }
          }
        }
      },
      "indices": {
        
        "book-20210120": {
        
          "uuid": "k43l2I4T2hCVYxgmvFb2Dy",
          "primaries": {
        
            "segments": {
        
              "count": 8,
              "memory_in_bytes": 247039,
              "terms_memory_in_bytes": 209657,
              "stored_fields_memory_in_bytes": 32272,
              "term_vectors_memory_in_bytes": 0,
              "norms_memory_in_bytes": 512,
              "points_memory_in_bytes": 3998,
              "doc_values_memory_in_bytes": 600,
              "index_writer_memory_in_bytes": 0,
              "version_map_memory_in_bytes": 0,
              "fixed_bit_set_memory_in_bytes": 0,
              "max_unsafe_auto_id_timestamp": -1,
              "file_sizes": {
        
              }
            }
          },
          "total": {
        
            "segments": {
        
              "count": 17,
              "memory_in_bytes": 499726,
              "terms_memory_in_bytes": 422271,
              "stored_fields_memory_in_bytes": 65088,
              "term_vectors_memory_in_bytes": 0,
              "norms_memory_in_bytes": 1088,
              "points_memory_in_bytes": 8011,
              "doc_values_memory_in_bytes": 3268,
              "index_writer_memory_in_bytes": 0,
              "version_map_memory_in_bytes": 0,
              "fixed_bit_set_memory_in_bytes": 0,
              "max_unsafe_auto_id_timestamp": -1,
              "file_sizes": {
        
              }
            }
          }
        },
        ...
      }
    }

### 7、completion - 自动提示统计信息 ###

自动提示统计信息。

//获取所有索引的completion信息
    GET /_stats/completion
    //获取所有索引的completion信息
    GET /bank/_stats/completion
    //获取同类索引的completion信息
    GET /log-*/_stats/completion

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "completion": {
        
            // 自动提示占用字节数
            "size_in_bytes": 0
          }
        },
        "total": {
        
          "completion": {
        
            "size_in_bytes": 0
          }
        }
      },
      "indices": {
        
        "book-20210120": {
        
          "uuid": "vFb22k4Thm43l2IDyCVYxg",
          "primaries": {
        
            "completion": {
        
              "size_in_bytes": 0
            }
          },
          "total": {
        
            "completion": {
        
              "size_in_bytes": 0
            }
          }
        },
        ...
      }
    }

### 8、fielddata - 统计信息 ###

fielddata统计信息，fielddata主要用加快text字段排序与聚合的性能，存储词根与文档的映射关系存储在在内存，在内存中进行排序与聚合。

//获取所有索引的fielddata信息
    GET /_stats/fielddata
    //获取所有索引的fielddata信息
    GET /bank/_stats/fielddata
    //获取同类索引的fielddata信息
    GET /log-*/_stats/fielddata

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "fielddata": {
        
            // 当前占用内存的大小
            "memory_size_in_bytes": 5488,
            // 被逐出词根的个数
            "evictions": 0
          }
        },
        "total": {
        
          "fielddata": {
        
            "memory_size_in_bytes": 9688,
            "evictions": 0
          }
        }
      },
      "indices": {
        
        "book-20210130": {
        
          "uuid": "VYxI4Th2kC43l2mvFb2Dyg",
          "primaries": {
        
            "fielddata": {
        
              "memory_size_in_bytes": 928,
              "evictions": 0
            }
          },
          "total": {
        
            "fielddata": {
        
              "memory_size_in_bytes": 1376,
              "evictions": 0
            }
          }
        },
        ...
      }
    }

### 9、flush - 刷新到磁盘的统计信息 ###

将es数据flush到磁盘的统计信息。

//获取所有索引的flush信息
    GET /_stats/flush
    //获取所有索引的flush信息
    GET /bank/_stats/flush
    //获取同类索引的flush信息
    GET /log-*/_stats/flush

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "flush": {
        
            // 刷新数据到磁盘的次数
            "total": 16,
            // 当translog超过刷新阈值时周期性触发的刷新次数
            "periodic": 0,
            // 总耗时
            "total_time_in_millis": 1640
          }
        },
        "total": {
        
          "flush": {
        
            "total": 33,
            "periodic": 0,
            "total_time_in_millis": 2953
          }
        }
      },
      "indices": {
        
        "book-20210131": {
        
          "uuid": "mvFyCb22k4I4ThDVY3l2xg",
          "primaries": {
        
            "flush": {
        
              "total": 1,
              "periodic": 0,
              "total_time_in_millis": 443
            }
          },
          "total": {
        
            "flush": {
        
              "total": 2,
              "periodic": 0,
              "total_time_in_millis": 459
            }
          }
        },
        ...
      }
    }

### 10、merge - 合并统计信息 ###

合并统计信息。

//获取所有索引的merge信息
    GET /_stats/merge
    //获取所有索引的merge信息
    GET /bank/_stats/merge
    //获取同类索引的merge信息
    GET /log-*/_stats/merge

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "merges": {
        
            // 当前发生的合并次数
            "current": 0,
            // 当前正在发生合并的文档数
            "current_docs": 0,
            // 当前合并参与的文档总大小，单位字节
            "current_size_in_bytes": 0,
            // 总发生的合并次数
            "total": 18074,
            // 合并的总耗时（单位毫秒）
            "total_time_in_millis": 2267867,
            // merge(合并)时总处理的文档个数
            "total_docs": 125994477,
            // merge(合并)时总处理的文档总大小（字节）
            "total_size_in_bytes": 53807733094,
            // merge(合并)时总停止时间（吞吐率为0）
            "total_stopped_time_in_millis": 0,
            // 超过指定吞吐率而暂停的时间（节流）
            "total_throttled_time_in_millis": 28682,
            // 自动进行流控的阔值,默认速率20m/s
            "total_auto_throttle_in_bytes": 309026610
          }
        },
        "total": {
        
          "merges": {
        
            "current": 0,
            "current_docs": 0,
            "current_size_in_bytes": 0,
            "total": 37362,
            "total_time_in_millis": 4776771,
            "total_docs": 258338766,
            "total_size_in_bytes": 110130214943,
            "total_stopped_time_in_millis": 0,
            "total_throttled_time_in_millis": 57781,
            "total_auto_throttle_in_bytes": 618053220
          }
        }
      },
      "indices": {
        
        "book-20210201": {
        
          "uuid": "hT2DymvFl2I4CVb2k43Yxg",
          "primaries": {
        
            "merges": {
        
              "current": 0,
              "current_docs": 0,
              "current_size_in_bytes": 0,
              "total": 1224,
              "total_time_in_millis": 147690,
              "total_docs": 8924693,
              "total_size_in_bytes": 3754681042,
              "total_stopped_time_in_millis": 0,
              "total_throttled_time_in_millis": 2058,
              "total_auto_throttle_in_bytes": 19065018
            }
          },
          "total": {
        
            "merges": {
        
              "current": 0,
              "current_docs": 0,
              "current_size_in_bytes": 0,
              "total": 2446,
              "total_time_in_millis": 320220,
              "total_docs": 17270022,
              "total_size_in_bytes": 7223483338,
              "total_stopped_time_in_millis": 0,
              "total_throttled_time_in_millis": 4098,
              "total_auto_throttle_in_bytes": 38130036
            }
          }
        },
        ...
      }
    }

### 11、refresh - 统计信息 ###

refresh统计信息。

//获取所有索引的refresh信息
    GET /_stats/refresh
    //获取所有索引的refresh信息
    GET /bank/_stats/refresh
    //获取同类索引的refresh信息
    GET /log-*/_stats/refresh

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "refresh": {
        
            // 执行刷新的总次数
            "total": 168484,
            // 总耗时
            "total_time_in_millis": 1514449,
            // 等待刷新侦听器的数量
            "listeners": 0
          }
        },
        "total": {
        
          "refresh": {
        
            "total": 348465,
            "total_time_in_millis": 3154142,
            "listeners": 0
          }
        }
      },
      "indices": {
        
        "book-20210202": {
        
          "uuid": "4Thhg!2_2k4msdfgd3l2IvFb2DyCVYxg",
          "primaries": {
        
            "refresh": {
        
              "total": 11448,
              "total_time_in_millis": 92157,
              "listeners": 0
            }
          },
          "total": {
        
            "refresh": {
        
              "total": 22887,
              "total_time_in_millis": 213867,
              "listeners": 0
            }
          }
        },
        ...
      }
    }

### 12、request\_cache - 统计信息 ###

request\_cache统计信息。

//获取所有索引的request_cache信息
    GET /_stats/request_cache
    //获取所有索引的request_cache信息
    GET /bank/_stats/request_cache
    //获取同类索引的request_cache信息
    GET /log-*/_stats/request_cache

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "request_cache": {
        
            // 请求缓存占用内存总大小
            "memory_size_in_bytes": 1062768,
            // 请求缓存被剔除出次数
            "evictions": 0,
            // 请求缓存被命中次数
            "hit_count": 4996,
            // 请求缓存未命中次数
            "miss_count": 2237
          }
        },
        "total": {
        
          "request_cache": {
        
            "memory_size_in_bytes": 2130030,
            "evictions": 0,
            "hit_count": 10128,
            "miss_count": 4579
          }
        }
      },
      "indices": {
        
        "book-20210204": {
        
          "uuid": "b2Dy2k44Thl2IxgmvFCVY3",
          "primaries": {
        
            "request_cache": {
        
              "memory_size_in_bytes": 74731,
              "evictions": 0,
              "hit_count": 379,
              "miss_count": 130
            }
          },
          "total": {
        
            "request_cache": {
        
              "memory_size_in_bytes": 149462,
              "evictions": 0,
              "hit_count": 756,
              "miss_count": 260
            }
          }
        },
        ...
      }
    }

### 13、warmer - 分片预热统计信息 ###

分片预热统计信息。

//获取所有索引的warmer信息
    GET /_stats/warmer
    //获取所有索引的warmer信息
    GET /bank/_stats/warmer
    //获取同类索引的warmer信息
    GET /log-*/_stats/warmer

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "warmer": {
        
            // 当前正在预热的个数
            "current": 0,
            // 总共发生的预热次数
            "total": 168464,
            // 分片预热总耗时
            "total_time_in_millis": 2544
          }
        },
        "total": {
        
          "warmer": {
        
            "current": 0,
            "total": 348428,
            "total_time_in_millis": 5139
          }
        }
      },
      "indices": {
        
        "book-20210204": {
        
          "uuid": "2l2I_2Dy38fjd94_Yxg",
          "primaries": {
        
            "warmer": {
        
              "current": 0,
              "total": 11445,
              "total_time_in_millis": 161
            }
          },
          "total": {
        
            "warmer": {
        
              "current": 0,
              "total": 22881,
              "total_time_in_millis": 364
            }
          }
        },
        ...
      }
    }

### 14、translog - 统计信息 ###

translog的统计信息。

//获取所有索引的translog信息
    GET /_stats/translog
    //获取所有索引的translog信息
    GET /bank/_stats/translog
    //获取同类索引的translog信息
    GET /log-*/_stats/translog

{
        
      "_shards": {
        
        "total": 32,
        "successful": 32,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "translog": {
        
            // 写translog的次数（索引文档、更新文档、删除文档的总操作数量）
            "operations": 240497,
            // translog实例管理的translog文件总大小。（一个索引引擎(InternalEngine)示例包含一个Translog实例）
            "size_in_bytes": 215617938,
            // 当前还未提交到lucene中的操作次数（索引文档、更新文档、删除文档的操作数量）
            "uncommitted_operations": 240497,
            // translog中未提交到Lucene中的字节数
            "uncommitted_size_in_bytes": 215617938,
            // 以秒为单位返回translog文件中最老条目的年龄
            "earliest_last_modified_age": 0
          }
        },
        "total": {
        
          "translog": {
        
            "operations": 480994,
            "size_in_bytes": 431235821,
            "uncommitted_operations": 480994,
            "uncommitted_size_in_bytes": 431235821,
            "earliest_last_modified_age": 0
          }
        }
      },
      "indices": {
        
        "book-20210206": {
        
          "uuid": "s728d00f_s8",
          "primaries": {
        
            "translog": {
        
              "operations": 0,
              "size_in_bytes": 55,
              "uncommitted_operations": 0,
              "uncommitted_size_in_bytes": 55,
              "earliest_last_modified_age": 0
            }
          },
          "total": {
        
            "translog": {
        
              "operations": 0,
              "size_in_bytes": 110,
              "uncommitted_operations": 0,
              "uncommitted_size_in_bytes": 110,
              "earliest_last_modified_age": 0
            }
          }
        },
        ...
      }
    }

### 15、recovery - 恢复的统计信息 ###

恢复的统计信息。

//获取所有索引的recovery信息
    GET /_stats/recovery
    //获取所有索引的recovery信息
    GET /bank/_stats/recovery
    //获取同类索引的recovery信息
    GET /log-*/_stats/recovery

{
        
      "_shards": {
        
        "total": 34,
        "successful": 34,
        "failed": 0
      },
      "_all": {
        
        "primaries": {
        
          "recovery": {
        
            // 作为源分片，正在执行恢复的分片数量
            "current_as_source": 0,
            // 作为目标分片，正在执行恢复的分片数量
            "current_as_target": 0,
            // 恢复过程总等待时间
            "throttle_time_in_millis": 36
          }
        },
        "total": {
        
          "recovery": {
        
            "current_as_source": 0,
            "current_as_target": 0,
            "throttle_time_in_millis": 36
          }
        }
      },
      "indices": {
        
        "book-20210206": {
        
          "uuid": "06hsdygt9ZXT1T245L_4uiw",
          "primaries": {
        
            "recovery": {
        
              "current_as_source": 0,
              "current_as_target": 0,
              "throttle_time_in_millis": 0
            }
          },
          "total": {
        
            "recovery": {
        
              "current_as_source": 0,
              "current_as_target": 0,
              "throttle_time_in_millis": 0
            }
          }
        },
        ...
      }
    }