一、概述

Elasticsearch 7.x文档基本操作(CRUD)

Elasticsearch 是一个流行的开源查找引擎,用于存储、查找和分析数据。下面是 Elasticsearch 7.x 版别的根本操作(CRUD):

1、创立索引:

PUT /index_name
{
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 0
  }
}

2、检查索引:

GET /index_name

3、删去索引:

DELETE /index_name

4、创立文档:

POST /index_name/_doc
{
  "field1": "value1",
  "field2": "value2"
}

5、获取文档:

GET /index_name/_doc/doc_id

6、更新文档:

POST /index_name/_doc/doc_id/_update
{
  "doc": {
    "field1": "new_value1"
  }
}

7、删去文档:

DELETE /index_name/_doc/doc_id

这些操作能够经过 Elasticsearch 的 REST API 进行。注意,这仅仅 Elasticsearch 的根本操作之一,还有许多其他操作,如查找、聚合、分析等。要深化了解 Elasticsearch 的运用,请检查 Elasticsearch 官方文档。

二、Elasticsearch CRUD 具体示例解说

1)增加文档

1、指定文档ID

PUT blog/_doc/1
{
  "title":"1、VMware Workstation虚拟机软件装置图解",
  "author":"chengyuqiang",
  "content":"1、VMware Workstation虚拟机软件装置图解...",
  "url":"http://x.co/6nc81"
}

Elasticsearch服务会返回一个JSON格局的呼应。

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 1,
  "result" : "created",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 0,
  "_primary_term" : 2
}

呼应成果阐明:

  • _index:文档地点的索引名
  • _type:文档地点的类型名
  • _id:文档ID
  • _version:文档的版别
  • result:created现已创立
  • _shards: _shards标明索引操作的仿制进程的信息。
  • total:指示应在其上履行索引操作的分片副本(主分片和副本分片)的数量。
  • successful:标明索引操作成功的分片副本数。
  • failed:在副本分片上索引操作失败的状况下包含仿制相关错误。

2、不指定文档ID

增加文档时能够不指定文档id,则文档id是自动生成的字符串。注意,需求运用POST办法,而不是PUT办法。

POST blog/_doc
{
  "title":"2、Linux服务器装置图解",
  "author":"chengyuqiang",
  "content":"2、Linux服务器装置图解解...",
  "url":"http://x.co/6nc82"
}

输出:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "5P2-O2gBNSQY7o-KMw2P",
  "_version" : 1,
  "result" : "created",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 1,
  "_primary_term" : 1
}

2)获取文档

1、经过文档id获取指定的文档

GET blog/_doc/1

输出:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 1,
  "found" : true,
  "_source" : {
    "title" : "1、VMware Workstation虚拟机软件装置图解",
    "author" : "chengyuqiang",
    "content" : "1、VMware Workstation虚拟机软件装置图解...",
    "url" : "http://x.co/6nc81"
  }
}

呼应成果阐明:

  • found值为true,标明查询到该文档
  • _source字段是文档的内容

2、文档不存在的状况

GET blog/_doc/2

输出:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "2",
  "found" : false
}

found字段值为false标明查询的文档不存在。

3、断定文档是否存在

HEAD blog/_doc/1

输出:

200 - OK

3)更新文档

1、更改id为1的文档,删去了author,修正content字段。

PUT blog/_doc/1
{
  "title":"1、VMware Workstation虚拟机软件装置图解",
  "content":"下载得到VMware-workstation-full-15.0.2-10952284.exe可履行文件...",
  "url":"http://x.co/6nc81"
}

输出:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 2,
  "result" : "updated",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 1,
  "_primary_term" : 1
}

_version更新为2

检查该文档

GET blog/_doc/1

输出:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 2,
  "found" : true,
  "_source" : {
    "title" : "1、VMware Workstation虚拟机软件装置图解",
    "content" : "下载得到VMware-workstation-full-15.0.2-10952284.exe可履行文件...",
    "url" : "http://x.co/6nc81"
  }
}

2、增加文档时,避免掩盖已存在的文档,能够经过_create加以限制

PUT blog/_doc/1/_create
{
  "title":"1、VMware Workstation虚拟机软件装置图解",
  "content":"下载得到VMware-workstation-full-15.0.2-10952284.exe可履行文件...",
  "url":"http://x.co/6nc81"
}

该文档现已存在,增加失败。

{
  "error": {
    "root_cause": [
      {
        "type": "version_conflict_engine_exception",
        "reason": "[_doc][1]: version conflict, document already exists (current version [2])",
        "index_uuid": "GqC2fSqPS06GRfTLmh1TLg",
        "shard": "1",
        "index": "blog"
      }
    ],
    "type": "version_conflict_engine_exception",
    "reason": "[_doc][1]: version conflict, document already exists (current version [2])",
    "index_uuid": "GqC2fSqPS06GRfTLmh1TLg",
    "shard": "1",
    "index": "blog"
  },
  "status": 409
}

3、更新文档的字段

经过脚本更新拟定字段,其中ctx是脚本语言中的一个履行对象,先获取_source,再修正content字段

POST blog/_doc/1/_update
{
  "script": {
    "source": "ctx._source.content=\"从官网下载VMware-workstation,双击可履行文件进行装置...\""  
  } 
}

呼应成果如下:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 3,
  "result" : "updated",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 2,
  "_primary_term" : 1
}

再次获取文档 GET blog/_doc/1,呼应成果如下

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 3,
  "found" : true,
  "_source" : {
    "title" : "1、VMware Workstation虚拟机软件装置图解",
    "content" : "从官网下载VMware-workstation,双击可履行文件进行装置...",
    "url" : "http://x.co/6nc81"
  }
}

4、增加字段

POST blog/_doc/1/_update
{
  "script": {
    "source": "ctx._source.author=\"chengyuqiang\""  
  } 
}

再次获取文档 GET blog/_doc/1,呼应成果如下:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 4,
  "found" : true,
  "_source" : {
    "title" : "1、VMware Workstation虚拟机软件装置图解",
    "content" : "从官网下载VMware-workstation,双击可履行文件进行装置...",
    "url" : "http://x.co/6nc81",
    "author" : "chengyuqiang"
  }
}

5、删去字段

POST blog/_doc/1/_update
{
  "script": {
    "source": "ctx._source.remove(\"url\")"  
  } 
}

再次获取文档 GET blog/_doc/1,呼应成果如下:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 5,
  "found" : true,
  "_source" : {
    "title" : "1、VMware Workstation虚拟机软件装置图解",
    "content" : "从官网下载VMware-workstation,双击可履行文件进行装置...",
    "author" : "chengyuqiang"
  }
}

4)删去文档

DELETE blog/_doc/1

输出:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 6,
  "result" : "deleted",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 6,
  "_primary_term" : 1
}

再次断定该文档是否存在,履行 HEAD blog/_doc/1,呼应成果 404 - Not Found

5)批量操作

假如文档数量非常巨大,商业运维中都是海量数据,一个一个操作文档显然不合实际。走运的是ElasticSearch供给了文档的批量操作机制。咱们现已知道mget允许一次性检索多个文档,ElasticSearch供给了Bulk API,能够履行批量索引、批量删去、批量更新等操作,也就是说Bulk API允许运用在单个步骤中进行多次 create 、 index 、 update 或 delete 恳求。

bulk 与其他的恳求体格局稍有不同,bulk恳求格局如下:

{ action: { metadata }}\n
{ request body        }\n
{ action: { metadata }}\n
{ request body        }\n
...

这种格局相似一个有用的单行 JSON 文档 流 ,它经过换行符(\n)衔接到一起。注意两个要点:

  • 每行必定要以换行符(\n)结束, 包含最终一行 。这些换行符被用作一个标记,能够有用分隔行。
  • 这些行不能包含未转义的换行符,由于他们将会对解析形成搅扰。这意味着这个 JSON 不 能运用 pretty 参数打印。
  • action/metadata 行指定 哪一个文档 做 什么操作 。metadata 应该 指定被索引、创立、更新或许删去的文档的 _index 、 _type 和 _id 。
  • request body 行由文档的 _source 本身组成–文档包含的字段和值。它是 index 和 create 操作所必需的。

1、批量导入

POST /_bulk
{ "create": { "_index": "blog", "_type": "_doc", "_id": "1" }}
{ "title": "1、VMware Workstation虚拟机软件装置图解" ,"author":"chengyuqiang","content":"官网下载VMware-workstation,双击可履行文件进行装置" , "url":"http://x.co/6nc81" }
{ "create": { "_index": "blog", "_type": "_doc", "_id": "2" }}
{ "title":  "2、Linux服务器装置图解" ,"author":  "chengyuqiang" ,"content": "VMware模拟Linux服务器装置图解" , "url": "http://x.co/6nc82" }
{ "create": { "_index": "blog", "_type": "_doc", "_id": "3" }}
{ "title":  "3、Xshell 6 个人版装置与长途操作衔接服务器" , "author": "chengyuqiang" ,"content": "Xshell 6 个人版装置与长途操作衔接服务器..." , "url": "http://x.co/6nc84" }

这个 Elasticsearch 呼应包含 items 数组, 这个数组的内容是以恳求的次序列出来的每个恳求的成果。

{
  "took" : 132,
  "errors" : false,
  "items" : [
    {
      "create" : {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "1",
        "_version" : 7,
        "result" : "created",
        "_shards" : {
          "total" : 2,
          "successful" : 1,
          "failed" : 0
        },
        "_seq_no" : 7,
        "_primary_term" : 1,
        "status" : 201
      }
    },
    {
      "create" : {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "2",
        "_version" : 1,
        "result" : "created",
        "_shards" : {
          "total" : 2,
          "successful" : 1,
          "failed" : 0
        },
        "_seq_no" : 8,
        "_primary_term" : 1,
        "status" : 201
      }
    },
    {
      "create" : {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "3",
        "_version" : 1,
        "result" : "created",
        "_shards" : {
          "total" : 2,
          "successful" : 1,
          "failed" : 0
        },
        "_seq_no" : 0,
        "_primary_term" : 1,
        "status" : 201
      }
    }
  ]
}

2、批量操作,包含删去、更新、新增

POST /_bulk
{ "delete": { "_index": "blog", "_type": "_doc", "_id": "1" }}
{ "update": { "_index": "blog", "_type": "_doc", "_id": "3", "retry_on_conflict" : 3} }
{ "doc" : {"title" : "Xshell教程"} }
{ "index": { "_index": "blog", "_type": "_doc", "_id": "4" }}
{ "title": "4、CentOS 7.x根本设置" ,"author":"chengyuqiang","content":"CentOS 7.x根本设置","url":"http://x.co/6nc85" }
{ "create": { "_index": "blog", "_type": "_doc", "_id": "5" }}
{ "title": "5、图解Linux下JDK装置与环境变量装备","author":"chengyuqiang" ,"content": "图解JDK装置装备" , "url": "http://x.co/6nc86" }

在7.0版别中,retry_on_conflict 参数取代了之前的**_retry_on_conflict**

{
  "took" : 125,
  "errors" : false,
  "items" : [
    {
      "delete" : {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "1",
        "_version" : 2,
        "result" : "deleted",
        "_shards" : {
          "total" : 2,
          "successful" : 1,
          "failed" : 0
        },
        "_seq_no" : 3,
        "_primary_term" : 1,
        "status" : 200
      }
    },
    {
      "update" : {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "3",
        "_version" : 2,
        "result" : "updated",
        "_shards" : {
          "total" : 2,
          "successful" : 1,
          "failed" : 0
        },
        "_seq_no" : 4,
        "_primary_term" : 1,
        "status" : 200
      }
    },
    {
      "index" : {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "4",
        "_version" : 1,
        "result" : "created",
        "_shards" : {
          "total" : 2,
          "successful" : 1,
          "failed" : 0
        },
        "_seq_no" : 1,
        "_primary_term" : 1,
        "status" : 201
      }
    },
    {
      "create" : {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "5",
        "_version" : 1,
        "result" : "created",
        "_shards" : {
          "total" : 2,
          "successful" : 1,
          "failed" : 0
        },
        "_seq_no" : 5,
        "_primary_term" : 1,
        "status" : 201
      }
    }
  ]
}

6)批量获取

GET blog/_doc/_mget
{
    "ids" : ["1", "2","3"]
}

id为1的文档现已删去,所以没有查找到

{
  "docs" : [
    {
      "_index" : "blog",
      "_type" : "_doc",
      "_id" : "1",
      "found" : false
    },
    {
      "_index" : "blog",
      "_type" : "_doc",
      "_id" : "2",
      "_version" : 1,
      "found" : true,
      "_source" : {
        "title" : "2、Linux服务器装置图解",
        "author" : "chengyuqiang",
        "content" : "VMware模拟Linux服务器装置图解",
        "url" : "http://x.co/6nc82"
      }
    },
    {
      "_index" : "blog",
      "_type" : "_doc",
      "_id" : "3",
      "_version" : 2,
      "found" : true,
      "_source" : {
        "title" : "Xshell教程",
        "author" : "chengyuqiang",
        "content" : "Xshell 6 个人版装置与长途操作衔接服务器...",
        "url" : "http://x.co/6nc84"
      }
    }
  ]
}

7)简略查找

这里介绍一下简略的文档查找操作,后面章节会具体介绍。

1、词项查询, 也称 term 查询

【示例一】

GET blog/_search
{
  "query": {
    "term": {
      "title": "centos"
    }
  }
}

输出:

{
  "took" : 1,
  "timed_out" : false,
  "_shards" : {
    "total" : 2,
    "successful" : 2,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 1,
      "relation" : "eq"
    },
    "max_score" : 0.71023846,
    "hits" : [
      {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "4",
        "_score" : 0.71023846,
        "_source" : {
          "title" : "4、CentOS 7.x根本设置",
          "author" : "chengyuqiang",
          "content" : "CentOS 7.x根本设置",
          "url" : "http://x.co/6nc85"
        }
      }
    ]
  }
}

【示例二】

GET blog/_search
{
  "query": {
    "term": {
      "title": "长途"
    }
  }
}

输出:

{
  "took" : 0,
  "timed_out" : false,
  "_shards" : {
    "total" : 2,
    "successful" : 2,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 0,
      "relation" : "eq"
    },
    "max_score" : null,
    "hits" : [ ]
  }
}

【示例三】

GET blog/_search
{
  "query": {
    "term": {
      "title": "程"
    }
  }
}

输出:

{
  "took" : 2,
  "timed_out" : false,
  "_shards" : {
    "total" : 2,
    "successful" : 2,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 1,
      "relation" : "eq"
    },
    "max_score" : 1.3486402,
    "hits" : [
      {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "3",
        "_score" : 1.3486402,
        "_source" : {
          "title" : "Xshell教程",
          "author" : "chengyuqiang",
          "content" : "Xshell 6 个人版装置与长途操作衔接服务器...",
          "url" : "http://x.co/6nc84"
        }
      }
    ]
  }
}

2、匹配查询,也称match查询

与term精确查询不同,关于match查询,只要被查询字段中存在任何一个词项被匹配,就会查找到该文档。

GET blog/_search
{
  "query": {
    "match": {
      "title": {
        "query": "长途"
      }
    }
  }
}

输出:

{
  "took" : 9,
  "timed_out" : false,
  "_shards" : {
    "total" : 2,
    "successful" : 2,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 1,
      "relation" : "eq"
    },
    "max_score" : 1.3486402,
    "hits" : [
      {
        "_index" : "blog",
        "_type" : "_doc",
        "_id" : "3",
        "_score" : 1.3486402,
        "_source" : {
          "title" : "Xshell教程",
          "author" : "chengyuqiang",
          "content" : "Xshell 6 个人版装置与长途操作衔接服务器...",
          "url" : "http://x.co/6nc84"
        }
      }
    ]
  }
}

8)路由机制

当你索引(动词,对该文档建立倒排索引)一个文档,它被存储到master节点上的一个主分片上。

Elasticsearch是怎么知道文档归于哪个分片的呢?当你创立一个新文档,它是怎么知道是应该存储在分片1还是分片2上的呢? 解答这个问题,咱们需求了解Elasticsearch的路由机制。 简略地说,Elasticsearch将具有相关Hash值的文档存放到同一个主分片中,分片位置核算算法如下:

shard = hash(routing) % number_of_primary_shards

算法阐明:

  • routing值是一个字符串,它默许是文档_id,也能够自界说。这个routing字符串经过哈希函数生成一个数字,然后除以主切片的数量得到一个余数(remainder),余数的范围是[0 , number_of_primary_shards-1],这个数字就是特定文档地点的分片。
  • 之前咱们介绍过,创立索引时需求指定主分片数量,该不能修正。这是由于假如主分片的数量在未来改变了,一切先前的路由值就失效了,文档也就永久找不到了。
  • 该算法根本能够保证一切文档在一切分片上平均散布,不会导致数据散布不均(数据倾斜)的状况。
  • 默许状况下,routing值是文档的_id。咱们创立文档时能够指定id的值;假如不指定id时,Elasticsearch将随机生成文档的_id值。这将导致在查询文档时,Elasticsearch不能确定文档的位置,需求将恳求广播到一切的分片节点上。

假设咱们有一个10个分片的索引。当一个恳求在集群上履行时根本进程如下:

  • 这个查找的恳求会被发送到一个节点。
  • 接纳到这个恳求的节点,将这个查询广播到这个索引的每个分片上(可能是主分片,也可能是仿制分片)。
  • 每个分片履行这个查找查询并返回成果。
  • 成果在通道节点上兼并、排序并返回给用户。

了解Elasticsearch的路由机制后,咱们能够在创立某一类文档时指定文档的路由值,这样ElasticSearch就知道在处理这一类文档时,怎么定位到正确的分片。比如,把某一特定类型的书籍存储到特定的分片上去,这样在查找这一类书籍的时候就能够避免查找其它的分片,也就避免了多个分片查找成果的兼并。路由机制向 Elasticsearch供给一种信息来决定哪些分片用于存储和查询。同一个路由值将映射到同一个分片。这根本上就是在说:“经过运用用户供给的路由值,就能够做到定向存储,定向查找。

一切的文档API(GET、INDEX、DELETE、BULK、UPDATE、MGET)都接纳一个routing参数,它用来自界说文档到分片的映射。增加routing参数方式与URL参数方式相同url?参数名=参数值

PUT blog/_doc/1?routing=haron
{
  "title":"1、VMware装置",
  "author":"hadron",
  "content":"VMware Workstation虚拟机软件装置图解...",
  "url":"http://x.co/6nc81"
}

输出:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 1,
  "result" : "created",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 12,
  "_primary_term" : 1
}

查询

GET blog/_doc/1?routing=hardon

输出:

{
  "_index" : "blog",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 1,
  "_routing" : "hardon",
  "found" : true,
  "_source" : {
    "title" : "1、VMware装置",
    "author" : "hadron",
    "content" : "VMware Workstation虚拟机软件装置图解...",
    "url" : "http://x.co/6nc81"
  }
}

【注意】自界说routing值能够形成数据散布不均的状况。例如用户hadron的文档非常多,有数十万个,而其他大多数用户的文档只有数个到数十个,这样将导致hadron地点的分片较大。

9)版别控制

参考文档:

  • www.elastic.co/guide/en/el…
  • www.elastic.co/guide/en/el…
  • elasticsearch.cn/book/elasti…
  • elasticsearch.cn/book/elasti…

【示例一】不带版别

PUT website
{
    "settings" : {
        "index" : {
            "number_of_shards" : 1,
            "number_of_replicas" : 1
        }
    }
}
PUT /website/_doc/1/_create
{
  "title": "My first blog entry",
  "text":  "Just trying this out..."
}

检查

GET website/_doc/1

输出:

{
  "_index" : "website",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 1,
  "found" : true,
  "_source" : {
    "title" : "My first blog entry",
    "text" : "Just trying this out..."
  }
}

【示例二】指定版别

PUT website/_doc/1?version=1
{
  "title": "My first blog entry",
  "text":  "Starting to get the hang of this..."
}

输出:

{
  "_index" : "website",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 2,
  "result" : "updated",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 1,
  "_primary_term" : 1
}

例如,要创立一个新的具有外部版别号 5 的博客文章,咱们能够按以下办法进行:

PUT /website/_doc/2?version=5&version_type=external
{
  "title": "My first external blog entry",
  "text":  "Starting to get the hang of this..."
}

在呼应中,咱们能看到当时的 _version 版别号是 5 :

{
  "_index" : "website",
  "_type" : "_doc",
  "_id" : "2",
  "_version" : 5,
  "result" : "created",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 2,
  "_primary_term" : 1
}

现在咱们更新这个文档,指定一个新的 version 号是 10 :

PUT /website/_doc/2?version=10&version_type=external
{
  "title": "My first external blog entry",
  "text":  "This is a piece of cake..."
}

恳求成功并将当时 _version 设为 10 :

{
  "_index" : "website",
  "_type" : "_doc",
  "_id" : "2",
  "_version" : 10,
  "result" : "updated",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 3,
  "_primary_term" : 1
}

假如你要重新运转此恳求时,它将会失败,并返回像咱们之前看到的同样的冲突错误, 由于指定的外部版别号不大于 Elasticsearch 的当时版别号。

{
  "error": {
    "root_cause": [
      {
        "type": "version_conflict_engine_exception",
        "reason": "[_doc][2]: version conflict, current version [10] is higher or equal to the one provided [10]",
        "index_uuid": "5616aEUkQ7yvQIYUDyLudg",
        "shard": "0",
        "index": "website"
      }
    ],
    "type": "version_conflict_engine_exception",
    "reason": "[_doc][2]: version conflict, current version [10] is higher or equal to the one provided [10]",
    "index_uuid": "5616aEUkQ7yvQIYUDyLudg",
    "shard": "0",
    "index": "website"
  },
  "status": 409
}

10)refresh

1、立即改写,文档可见

这些将创立一个文档并立即改写索引,使其可见:

DELETE test
PUT test/_doc/1?refresh
{"message": "测验文档1"}
PUT test/_doc/2?refresh=true
{"message": "测验文档2"}

2、不改写

这些将创立一个文档而不做任何使查找可见的内容:

PUT test/_doc/3
{"message": "测验文档3"}
PUT test/_doc/4?refresh=false
{"message": "测验文档4"}

3、等待改写可见

PUT test/_doc/5?refresh=wait_for
{"message": "测验文档5"}

Elasticsearch 常见的操作就先到这里了,想了解更多的API 接口操作,能够查阅官方文档或私信我,也可关注我的公众号【大数据与云原生技能共享】加群交流~

Elasticsearch 7.x文档基本操作(CRUD)