zoukankan      html  css  js  c++  java
  • ES Docs-3:Modifying Data

    Modifying Data

    Indexing/Replacing Documents

    curl -XPUT 'localhost:9200/customer/external/1?pretty' -d '
    {
      "name": "John Doe"
    }'
    

    If we then executed the above command again with a different (or same) document, Elasticsearch will replace (i.e. reindex) a new document on top of the existing one with the ID of 1

    curl -XPUT 'localhost:9200/customer/external/1?pretty' -d '
    {
      "name": "Micheal"
    }'
    

    If, on the other hand, we use a different ID, a new document will be indexed and the existing document(s) already in the index remains untouched.

    we are using the POST verb instead of PUT since we didn’t specify an ID.

    curl -XPOST 'localhost:9200/customer/external?pretty' -d '
    {
      "name": "Jane Doe"
    }'
    

    Updating Documents

    This example shows how to update our previous document (ID of 1) by changing the name field to "Jane Doe":
    改变name field

    curl -XPOST 'localhost:9200/customer/external/1/_update?pretty' -d '
    {
      "doc": { "name": "Jane Doe" }
    }'
    

    添加age field

    curl -XPOST 'localhost:9200/customer/external/1/_update?pretty' -d '
    {
      "doc": { "name": "Jane Doe", "age": 20 }
    }'
    

    脚本更新(失败)

    curl -XPOST 'localhost:9200/customer/external/1/_update?pretty' -d '
    {
      "script" : "ctx._source.age += 5"
    }'
    

    返回

    {
      "error" : {
        "root_cause" : [ {
          "type" : "remote_transport_exception",
          "reason" : "[es_node_1][127.0.0.1:9300][indices:data/write/update[s]]"
        } ],
        "type" : "illegal_argument_exception",
        "reason" : "failed to execute script",
        "caused_by" : {
          "type" : "script_exception",
          "reason" : "scripts of type [inline], operation [update] and lang [groovy] are disabled"
        }
      },
      "status" : 400
    }
    

    Deleting Documents

    根据ID删除Doc

    es@qiandu1-yuwencai:~/cluster/elasticsearch-2.3.1$ curl -XDELETE 'localhost:9200/customer/external/2?pretty'
    

    返回

    {
      "found" : true,
      "_index" : "customer",
      "_type" : "external",
      "_id" : "2",
      "_version" : 2,
      "_shards" : {
        "total" : 2,
        "successful" : 1,
        "failed" : 0
      }
    }
    
    

    The delete-by-query plugin can delete all documents matching a specific query.

    Batch Processing

    _bulk API

    curl -XPOST 'localhost:9200/customer/external/_bulk?pretty' -d '
    {"index":{"_id":"1"}}
    {"name": "John Doe" }
    {"index":{"_id":"2"}}
    {"name": "Jane Doe" }
    '
    

    返回

    {
      "took" : 17,
      "errors" : false,
      "items" : [ {
        "index" : {
          "_index" : "customer",
          "_type" : "external",
          "_id" : "1",
          "_version" : 5,
          "_shards" : {
            "total" : 2,
            "successful" : 1,
            "failed" : 0
          },
          "status" : 200
        }
      }, {
        "index" : {
          "_index" : "customer",
          "_type" : "external",
          "_id" : "2",
          "_version" : 1,
          "_shards" : {
            "total" : 2,
            "successful" : 1,
            "failed" : 0
          },
          "status" : 201
        }
      } ]
    }
    

    当然,也可以进行索引的更新和删除操作,不过删除操作没有参数

    {"update":{"_id":"1"}}
    {"doc": { "name": "John Doe becomes Jane Doe" } }
    {"delete":{"_id":"2"}}
    

    This functionality is important in that it provides a very efficient mechanism to do multiple operations as fast as possible with as little network roundtrips as possible.

    The bulk API executes all the actions sequentially and in order. If a single action fails for whatever reason, it will continue to process the remainder of the actions after it. When the bulk API returns, it will provide a status for each action (in the same order it was sent in) so that you can check if a specific action failed or not.

    参考资料

    来源: https://www.elastic.co/guide/en/elasticsearch/reference/current/_batch_processing.html

  • 相关阅读:
    POJ 3276 Face The Right Way
    POJ 3061 Subsequence
    HDU 2104 hide handkerchief
    GCJ Crazy Rows
    HDU 1242 Rescue
    激光炸弹:二维前缀和
    I Hate It:线段树:单点修改+区间查询
    承压计算:模拟+double
    等差素数列:线性筛+枚举
    Period :KMP
  • 原文地址:https://www.cnblogs.com/myitroad/p/5405482.html
Copyright © 2011-2022 走看看