它接受像_primary,_primary_first,_local,_only_node:xyz,_prefer_node:xyz, 和_shards:2,3这样的值, 这些值在searchpreference文档页面被详细解释。 但是最有用的值是某些随机字符串,它可以避免bouncing results问题。 Bouncing Results想象一下有两个文档有同样值的时间戳字段,
{ "field": "price"} }, "max_price" : { "max": { "field": "price"} } } } } } } } GET /cars/transactions/_search { "size" : 0, "aggs":{ "price":{ "histogram":{ "field": "price", "interval": 20000 }, "aggs":{ "revenue": { "sum": { "field" : "price" } ...
# By default Elasticsearch is only accessible on localhost. Set a different # address here to expose this node on the network: # 网络主机 host 为 0.0.0.0 ,即可启用该物理机器所有网卡网络访问 (设置后,es将从开发模式变成生成模式) network.host: 0.0.0.0 # #为es设置自定义端口,默认是9200 # 注...
GET /megacorp/employee/_search { "aggs": { "all_interests": { "terms": {"field":"interests"} } } } {"error": {"root_cause": [ {"type":"illegal_argument_exception","reason":"Fielddata is disabled on text fields by default. Set fielddata=true on [interests] in order to load f...
GET /my-index-000001/_search?request_cache=true{ "size": 0, "aggs": { "popular_colors": { "terms": { "field": "colors" } } } } 参数:indices.requests.cache.size分片缓存占用堆内存的大小 默认值:1% 快照与恢复配置 快照操作的最大并发数。操作包括快照创建,删除和复制。
ElasticSearch的搜索包含两部分:(1)结构化搜索,不涉及评分,_index、_type(es7后废弃,统一_doc) 和 id 三元组来确定唯一文档(见:腊八粥:ElasticSearch源码:Get操作)。(2)全文索引,根据关键词从倒排索引中搜索,并根据相关性得分进行排序。对应示意图如下: 1. Search API 全文索引的应用范围广阔,最明显的地方就是对...
es修改字段mapping类型 elasticsearch修改mapping,1.在使用ES之前就应该把mapping指定写好,官方文档写的很详细Youcanonlyfindthatwhichisstoredinyourindex.Inordertomakeyourdatasearchable,yourdatabaseneedstoknowwhattypeofdataeachfieldcontainsandhow
What do I do if the system displays the error message "No keyword/multi-field defined exact matches for [KeywordField]" when I use the SQL plug-in provided by X-Pack to perform a query? Cause Fields of the text type are used for the query for which the LIKE operator is used. ...
P.P.S. Your mapping doesn't have to map the entire elasticsearch index - you can create a table with only one field and only that will be used by es-hadoop. Author ashishrathi1 commented Mar 24, 2014 Here is the log for both creation and query of data : i created new table and...
interval field is deprecatedHistorically both calendar and fixed intervals were configured in a single interval field, which led to confusing semantics. Specifying 1d would be assumed as a calendar-aware time, whereas 2d would be interpreted as fixed time. To get "one day" of fixed time, the ...