ignore_above ignore_above Strings longer than the ignore_above setting will not be indexed or stored. For arrays of strings, ignore_above will be applied for each array ele...

Explain Example Path and HTTP methods URL parameters Response Response body fields Explain Introduced 1.0 Wondering why a specific document ranks higher (or lower) for a ...

[[choosing-a-stemmer]]=== Choosing a Stemmer The documentation for thehttp://bit.ly/1AUfpDN[`stemmer` ] token filterlists multiple stemmers for some languages.(((“stemming words”...

cat segments Example Path and HTTP methods URL parameters Response cat segments Introduced 1.0 The cat segments operation lists Lucene segment-level information for each in...

We are not experts on search systems, if anything is incorrect about our portrayal, please let us know on the mailing list or via some other means. Elasticsearch is a search syst...

Index stats API Request Description Path parameters Query parameters Examples Get statistics for multiple data streams and indices Get statistics for all data streams and indi...

近实时搜索 refeash API 近实时搜索 因为per-segment search 机制，索引和搜索一个文档之间是有延迟的。新的文档会在几分钟内可以搜索，但是这依然不够快。 磁盘是瓶颈。提交一个新的段到磁盘需要fsync 操作，确保段被物理地写入磁盘，即时电源失效也不会丢失数据。但是fsync 是昂贵的，它不能在每个文档被索引的时就触发。 ...

script 动态提交 固定文件 其他语言 script Elasticsearch 中，可以使用自定义脚本扩展功能。包括评分、过滤函数和聚合字段等方面。内置脚本引擎历经 MVEL、Groovy、Lucene expression 的变换后，Elastic.co 最终决定实现一个自己专用的 Painless 脚本语言，并在 5.0 版正式发布。...

k-NN search with nested fields Indexing and searching nested fields Inner hits k-NN search with filtering on nested fields k-NN search with nested fields Using nested fields ...

2.0.0 Remove mapping types parameter Deprecate outdated nomenclature Add OpenSearch Notifications plugins Drop support for JDK 8 2.0.0 Remove mapping types parameter The ty...