tam*_*ama 8 elasticsearch elasticsearch-aggregation
我有两个索引 - 一个用于Application模型，另一个用于Databases模型（多对多关系）。
每个文档都被非规范化以包含来自另一个模型的属性
Application
|_ vendor_name
|_ databases
|_ db_1
|_ db_2
Database
|_ database_applications
|_ app_1
|_vendor_name
|_ app_2
|_ vendor_name
对供应商名称执行多索引搜索 - 似乎我从两个索引中都得到了正确的结果。
挑战在 vendor_name 字段上正确聚合
当结果仅来自数据库时，使用以下聚合似乎有效。我也尝试过，field: '*vendor_name'但似乎不起作用。
我错过了什么？模型应该改变吗？
aggregation:
vendor_name: {
terms: {
field: "database_applications.vendor_name"
}
}
根据@Andrie-Stefan - 这是两个索引映射的更准确表示（缩写为简短）：
数据库
Application
|_ vendor_name
|_ databases
|_ db_1
|_ db_2
Database
|_ database_applications
|_ app_1
|_vendor_name
|_ app_2
|_ vendor_name
应用
{
"applications": {
"aliases": {},
"mappings": {
"application": {
"properties": {
"application_view": {
"properties": {
"app_name": {
"type": "string"
},
"app_status": {
"type": "string"
},
"app_steward_name": {
"type": "string"
},
"app_suite": {
"type": "string"
},
"app_vendor_name": {
"type": "string"
},
"app_version": {
"type": "string"
},
"assignment_group": {
"type": "string"
},
"business_domain_name": {
"type": "string"
},
"exception": {
"type": "string"
},
"id": {
"type": "long"
},
"it_owner_name": {
"type": "string"
},
"service_level": {
"type": "string"
}
}
},
"assignment_group": {
"type": "string"
},
"company_databases": {
"properties": {
"backup_history_info": {
"type": "string"
},
"company_applications": {
"properties": {
"alternate_name": {
"type": "string"
},
"application_id": {
"type": "long"
},
"application_name": {
"type": "string"
},
"business_owner": {
"type": "string"
},
"company_system_applications": {
"properties": {
"aka": {
"type": "string"
},
"allow_add_request": {
"type": "string"
},
"allow_remove_request": {
"type": "string"
},
"asset_type": {
"type": "string"
},
"contract_number": {
"type": "string"
},
"cost_level": {
"type": "string"
},
"company_alternate_name": {
"type": "string"
},
"company_application_id": {
"type": "long"
},
"company_application_name": {
"type": "string"
},
"company_business_owner": {
"type": "string"
},
"company_division_id": {
"type": "long"
},
"company_it_app_steward": {
"type": "string"
},
"company_notes": {
"type": "string"
},
"company_system_id": {
"type": "long"
},
"company_vendor": {
"type": "string"
},
"description": {
"type": "string"
},
"display_in_catalog": {
"type": "string"
},
"id": {
"type": "long"
},
"inform_of_removal": {
"type": "string"
},
"is_restricted": {
"type": "string"
},
"it_app_steward": {
"type": "string"
},
"it_owner": {
"type": "string"
},
"last_modified": {
"type": "string"
},
"last_modified_by": {
"type": "string"
},
"media_location": {
"type": "string"
},
"media_source": {
"type": "string"
},
"name": {
"type": "string"
},
"os_environment": {
"type": "string"
},
"owned_by": {
"type": "string"
},
"retirement_date": {
"type": "date",
"format": "dateOptionalTime"
},
"status": {
"type": "string"
},
"status_id": {
"type": "long"
},
"suite_name": {
"type": "string"
},
"system_application": {
"properties": {
"assignment_group": {
"type": "string"
},
"division": {
"type": "string"
},
"id": {
"type": "long"
},
"name": {
"type": "string"
},
"owner_id": {
"type": "string"
},
"status": {
"type": "string"
},
"steward_id": {
"type": "string"
},
"suite": {
"type": "string"
},
"vendor_name": {
"type": "string"
},
"vendor_url_web_site": {
"type": "string"
},
"version": {
"type": "string"
}
}
},
"vendor_name": {
"type": "string"
},
"version": {
"type": "string"
}
}
},
"division_id": {
"type": "long"
},
"it_app_steward": {
"type": "string"
},
"notes": {
"type": "string"
},
"software_inventory_id": {
"type": "long"
},
"vendor": {
"type": "string"
}
}
},
"company_instances": {
"properties": {
"business_environment_id": {
"type": "long"
},
"cgi_service_id": {
"type": "long"
},
"char_set": {
"type": "string"
},
"confirmed_license_purchase_dt": {
"type": "string"
},
"company_server": {
"properties": {
"business_environment_id": {
"type": "long"
},
"division_id": {
"type": "long"
},
"domain": {
"type": "string"
},
"hw_platform_id": {
"type": "long"
},
"ip_address": {
"type": "string"
},
"location_id": {
"type": "long"
},
"no_of_cpu": {
"type": "long"
},
"notes": {
"type": "string"
},
"os_platform_id": {
"type": "long"
},
"os_version": {
"type": "string"
},
"server_id": {
"type": "long"
},
"server_name": {
"type": "string"
}
}
},
"description": {
"type": "string"
},
"division_id": {
"type": "long"
},
"edition_id": {
"type": "long"
},
"instance_id": {
"type": "long"
},
"instance_name": {
"type": "string"
},
"itap_have_access": {
"type": "string"
},
"listener_port": {
"type": "long"
},
"location_id": {
"type": "long"
},
"notes": {
"type": "string"
},
"patch_number": {
"type": "string"
},
"rdbms_type_id": {
"type": "long"
},
"server_id": {
"type": "long"
},
"service_level_id": {
"type": "long"
},
"version": {
"type": "string"
}
}
},
"db_security_model_id": {
"type": "long"
},
"notes": {
"type": "string"
},
如果字段名称相似，则只能跨索引聚合字段。聚合字段没有通配符语法。
以下是您的映射当前定义的内容：
指数： company-company_databases
类型： company_database
字段名称：
company_applications.company_system_applications.vendor_namecompany_applications.company_system_applications.system_application.vendor_name指数： applications
类型： application
字段名称：
company_databases.company_applications.company_system_applications.vendor_namecompany_databases.company_applications.company_system_applications.system_application.vendor_name就 Elasticsearch 而言，这些字段没有任何共同点（尽管部分路径是vendor_name）。
如果您的目标是聚合vendor_name跨越两个索引的查询，请考虑重组索引/映射来实现此目的。
请注意，Elasticsearch不建模多对多关系
如果您可以避免在应用程序之间复制数据库信息，您也许可以将关系重新表述为层次结构，例如：
指数：applications
--
类型：application
字段：vendor_name等...
--
类型：database_application
字段：vendor_name、databases.<inner fields>等...
--
然后，您就可以在同一字段路径上跨类型进行聚合vendor_name，并获得查询单个applications索引的额外好处。
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