ElasticSearch | 易学教程

Recreate ElasticSearch Index with Nest 7.x

阅读更多关于 Recreate ElasticSearch Index with Nest 7.x

问题 I would like to be able to recreate an ElasticSearch index, in production, without any downtime. With previous versions of Nest (5 and earlier) it was possible to do that by having an alias that points at your original index, creating a new index, updating the alias to point to the new index, and then dropping the original index. Is it possible to achieve something similar, without downtime, with Nest 7.x? If so, how. If you can provide an example with Object Initializer Syntax, that would be

Recreate ElasticSearch Index with Nest 7.x

阅读更多关于 Recreate ElasticSearch Index with Nest 7.x

Elasticsearch insensitive search accents

阅读更多关于 Elasticsearch insensitive search accents

问题 I'm using Elastic search with Python. I can't find a way to make insensitive search with accents. For example: I have two words. " Camión " and " Camion ". When a user search for "camion" I'd like the two results show up. Creating index: es = Elasticsearch([{u'host': u'127.0.0.1', u'port': b'9200'}]) es.indices.create(index='name', ignore=400) es.index( index="name", doc_type="producto", id=p.pk, body={ 'title': p.titulo, 'slug': p.slug, 'summary': p.summary, 'description': p.description,

腾讯云数据库MySQL高可用实践

阅读更多关于腾讯云数据库MySQL高可用实践

主题：腾讯云数据库MySQL高可用实践大纲： 1. 给刚进入数据库行业新人的一些建议 2. 目前腾讯云RDS的可用性达到了99.9999%，需要做好哪些工作才能达到如此高的稳定性 3. 腾讯云RDS的性价比很高，请问都包含了哪些方面 4. TXSQL的好处 5. 腾讯云下关于MySQL高可用还需要使用者额外去监控哪些内容听说3306π要搞事情了是啊，马上要搞3306π深圳站了啊，是吗？哪天啊，在哪里办，怎么报名？ 12月19日，就在深圳南山区海岸城，点文末的原文链接或者扫描二维码就可以报名了，一起来吹吹牛逼。嘉宾自我介绍杨杰架构师 CDB/CynosDB数据库管控平台架构师，TXSQL内核源码贡献者，腾讯内部开源MySQL 无锁备份工具作者 01 很多小伙伴进入数据库行业，都会把进入腾讯作为目标，杨老师作为过来人可否给大家一些建议吗？以我自身的经历来说，进入数据库行业也是偶然的机会。在腾讯数据库团队已经是第8个年头，最近几年招聘工作也比较多，算是有些心得吧。对于毕业生来说，我关注的是基础的技术能力、逻辑思维和技术热情。基础能力包括编程语言基础、数据结构和算法，这方面是硬实力，不可或缺但比较容易掌握，建议可以多刷题。逻辑思维能力，即分析问题的能力，对所做的事情是有一个较全面的认识，对项目/技术有思考。技术热情比较好理解，就不在赘述了。对于已经在职同学来说

Field.Store and Field.Index both set to `NO` in a Lucene document?

阅读更多关于 Field.Store and Field.Index both set to `NO` in a Lucene document?

问题 I am aware of what Field.store and Field.Index means in Lucene document and aware of the use-cases when either Field.store or Field.Index is set to NO . But recently, I came across piece of code, when both are set to NO . Could anybody explain the use-case with an example, when we need to set them to NO ?. PS: I referred to this SO question, which explains why one is set to NO and another is set to Yes, with good use-cases, but it doesn't give answer to my question. 回答1: Lucene is the generic

在Elasticsearch中对 text 类型的字段进行聚合异常Fielddata is disabled，Set fielddata=true

阅读更多关于在Elasticsearch中对 text 类型的字段进行聚合异常Fielddata is disabled，Set fielddata=true

在Elasticsearch中对 text 类型的字段进行聚合异常Fielddata is disabled，Set fielddata=true 参考文章：（1）在Elasticsearch中对 text 类型的字段进行聚合异常Fielddata is disabled，Set fielddata=true （2）https://www.cnblogs.com/CooderIsCool/articles/10286964.html 备忘一下。来源： oschina 链接： https://my.oschina.net/u/4428122/blog/4794405

How to search on multiple fields of array in elasticsearch

阅读更多关于 How to search on multiple fields of array in elasticsearch

问题 I have a index in elastic search called professor If for cross field i need "AND" condition for same field array i need to OR condition I need to search subject which is Physics or Accounting this is array of fields(OR) statement AND I need to search type is Permanent or GUEST condition this is array of fields(OR) statement AND I need to search Location is NY (&) condition test = [{'id':1,'name': 'A','subject': ['Maths','Accounting'],'type':'Contract', 'Location':'NY'}, { 'id':2,'name': 'AB',

Kibana v 7.9.2 exact format for hour_minute_second

阅读更多关于 Kibana v 7.9.2 exact format for hour_minute_second

问题 I followed and https://www.elastic.co/guide/en/elasticsearch/reference/current/mapping-date-format.html but I could not find the answer that required . I created index using GET film/_mapping Also as per the accepted answer in Elasticsearch: Datatype for time(HH:mm:ss.SSS) field I created my mapping as per below . PUT film/_mapping { "properties": { "filmname": { "type": "keyword" }, "runtime": { "type": "date", "format": "hour_minute_second_fraction" }, "genre": { "type": "text" },

Elastisearch - How to process all fields in document while using pipeline processor

阅读更多关于 Elastisearch - How to process all fields in document while using pipeline processor

问题 I am using below processor, but I want to apply it on all fields. So will I need to add all fields in 'field' or is there any other way to do it. "description": "my pipeline that remvoves empty string and null strings", "processors": [ { "remove": { "field": "my_field", "ignore_missing": true, "if": "ctx.my_field == \"null\" || ctx.my_field == \"\"" } } } 回答1: The remove processor doesn't allow you to use wildcard * for checking all fields. Instead you can pick the script processor and do it

Elastic search fail to do a timestamp range query

阅读更多关于 Elastic search fail to do a timestamp range query

问题 i need to do a query within certain time range , First of all, i want to do a query like { "query": { "bool": { "must": [ { "query_string": { "query": "13000020" } }, { "range": { "timestampstring": { "lte": "2020-10-05 15:22:58.537" } } } ] } } } and the results was { "took": 15, "timed_out": false, "_shards": { "total": 1, "successful": 1, "skipped": 0, "failed": 0 }, "hits": { "total": { "value": 12, "relation": "eq" }, "max_score": 2.0, "hits": [ { "_index": "test", "_type": "test12", "