标签: elasticsearch-5

在我的一个项目中,我计划将ElasticSearch与mysql一起使用.我已经成功安装了ElasticSearch.我能够分别管理ES中的索引.但我不知道如何用mysql实现相同的功能.

我已阅读了几份文件,但我有点困惑,没有明确的想法.谁能帮帮我吗？

提前致谢.

ElasticSearch 5.x对Suggester API(文档)引入了一些(重大)更改.最值得注意的变化如下:

完成建议是面向文档的

建议知道他们所属的文件.现在,关联的文档(_source)将作为完成建议的一部分返回.

简而言之,所有完成查询都返回所有匹配的文档而不是匹配的单词.这就是问题所在 - 如果自动填充的单词出现在多个文档中,则会重复这些单词.

假设我们有这个简单的映射:

{
   "my-index": {
      "mappings": {
         "users": {
            "properties": {
               "firstName": {
                  "type": "text"
               },
               "lastName": {
                  "type": "text"
               },
               "suggest": {
                  "type": "completion",
                  "analyzer": "simple"
               }
            }
         }
      }
   }
}

有一些测试文件:

{
   "_index": "my-index",
   "_type": "users",
   "_id": "1",
   "_source": {
      "firstName": "John",
      "lastName": "Doe",
      "suggest": [
         {
            "input": [
               "John",
               "Doe"
            ]
         }
      ]
   }
},
{
   "_index": "my-index",
   "_type": "users",
   "_id": …

我的代码在elasticsearch 5中工作得很好但是当我从5升级到6然后.它正在显示

org.elasticsearch.common.transport.InetSocketTransportAddress not found

完整的堆栈跟踪:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project elastic-store: Compilation failure
[ERROR] /home/elastic/elastic-store/src/main/java/com/qw/psence/store/es/common/ESClient.java:[12,42] cannot find symbol
[ERROR] symbol:   class InetSocketTransportAddress
[ERROR] location: package org.elasticsearch.common.transport
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles: …

当我尝试在elasticsearch中存储任何内容时,错误说:

TransportError(403, u'cluster_block_exception', u'blocked by: [FORBIDDEN/12/index read-only / allow delete (api)];')

我已经在索引中插入了大约2亿个文档.但我不知道为什么会发生这种错误.我试过了:

curl -u elastic:changeme -XPUT 'localhost:9200/_cluster/settings' -H 'Content-Type: application/json' -d '{"persistent":{"cluster.blocks.read_only":false}}'

如上所述: ElasticSearch进入"只读"模式,节点无法更改

结果是:

{"acknowledged":true,"persistent":{"cluster":{"blocks":{"read_only":"false"}}},"transient":{}}

但没有改变.我该怎么办？

Elasticsearch 是否允许我们查询不区分大小写的文档？或者我应该在查询之前将它们保存为不区分大小写？或者是否应该为整个索引设置一些设置以使其不区分大小写？

你能澄清一下这一刻吗？

我正在查看ElasticSearch 5.6上的单一类型索引的示例,以准备删除映射类型.具体来说,我正在运行ElasticSearch 页面中关于删除类型的第一个示例,在使用docker.elastic.co/elasticsearch/elasticsearch:5.6.5映像在Docker中本地运行的新集群上

运行我链接到的第一部分的第一个例子:

PUT localhost:9200/users
{
  "settings": {
    "index.mapping.single_type": true
  },
  "mappings": {
    "_doc": {
      "properties": {
        "name": {
          "type": "text"
        },
        "user_name": {
          "type": "keyword"
        },
        "email": {
          "type": "keyword"
        }
      }
    }
  }
}

我收到以下错误:

{
  "error": {
    "root_cause": [
      {
        "type": "invalid_type_name_exception",
        "reason": "mapping type name [_doc] can't start with '_'"
      }
    ],
    "type": "invalid_type_name_exception",
    "reason": "mapping type name [_doc] can't start with '_'"
  },
  "status": 400
}

我知道名称中带有前导下划线的字段通常被认为是为ES内部保留的; 但我假设这_doc将被视为一个从版本开始的特殊情况5.6 …

有人可以提供python elasticsearch助手客户端的扫描API示例吗？

res = elasticsearch.helpers.scan(....)

如何从res对象获得elasticsearch的所有结果？

我想得到满足一定条件的群体数量.在SQL术语中,我想在Elasticsearch中执行以下操作.

SELECT COUNT(*) FROM
(
   SELECT
    senderResellerId,
    SUM(requestAmountValue) AS t_amount
   FROM
    transactions
   GROUP BY
    senderResellerId
   HAVING
    t_amount > 10000 ) AS dum;

到目前为止,我可以通过term Aggsel对senderResellerId进行分组.但是当我应用过滤器时,它不能按预期工作.

弹性请求

{
  "aggregations": {
    "reseller_sale_sum": {
      "aggs": {
        "sales": {
          "aggregations": {
            "reseller_sale": {
              "sum": {
                "field": "requestAmountValue"
              }
            }
          }, 
          "filter": {
            "range": {
              "reseller_sale": { 
                "gte": 10000
              }
            }
          }
        }
      }, 
      "terms": {
        "field": "senderResellerId", 
        "order": {
          "sales>reseller_sale": "desc"
        }, 
        "size": 5
      }
    }
  }, 
  "ext": {}, 
  "query": {  "match_all": {} }, 
  "size": …

我最近升级到elasticsearch版本6.1.1,现在我无法批量索引json文件中的文档.我内联它,它工作正常.以下是该文件的内容:

{"index" : {}}
{"name": "Carlson Barnes", "age": 34}
{"index":{}}
{"name": "Sheppard Stein","age": 39}
{"index":{}}
{"name": "Nixon Singleton","age": 36}
{"index":{}}
{"name": "Sharron Sosa","age": 33}
{"index":{}}
{"name": "Kendra Cabrera","age": 24}
{"index":{}}
{"name": "Young Robinson","age": 20}

当我运行此命令时,

curl -XPUT 'localhost:9200/subscribers/ppl/_bulk?pretty' -H 'Content-Type: application/json' -d @customers_full.json

我收到此错误:

"error" : {
    "root_cause" : [
      {
        "type" : "illegal_argument_exception",
        "reason" : "The bulk request must be terminated by a newline [\n]"
      }
    ],
    "type" : "illegal_argument_exception",
    "reason" : "The bulk request must be terminated by …

有人能告诉我ElasticSearch上是否有相同的Solr copyField指令？

我知道有多字段类型: http ://www.elasticsearch.org/guide/reference/mapping/multi-field-type.html当你想在同一个字段上应用多个分析器时,这很好.

但它并不完全相同.Solr允许将多个字段"合并"为一个:

<field name="id" type="string" indexed="true" stored="true"/>
<field name="name" type="string" indexed="true" stored="true"/>
<field name="subject" type="string" indexed="true" stored="true"/>
<field name="location" type="string" indexed="true" stored="true"/>
<field name="all" type="text" indexed="true" stored="true" multiValued="true"/>
<copyField source="*" dest="all"/>

这个插件很有前途:https: //github.com/yakaz/elasticsearch-analysis-combo

因为它允许在使用ElasticSearch多值字段时将结果作为单个字段返回.但它仍然不完全相同,因为它不允许"合并"多个字段.

我想要Combo分析器和Solr copyField的组合.

我有一个博客文章模型(标题/描述字段),并希望在单个字段"blogContent"上复制标题和描述,我将在其中应用2个不同的分析器.

ElasticSearch有解决方案吗？