不爲也 比不能也

Java programmers have two choices when communicating with Elasticsearch: they can use either the REST API over HTTP, or the internal Java API used by Elasticsearch itself for node-to-node communication.Java programmer는 Elasticsearch와 통신 할 경우, 두 가지 중 하나를 선택을 할 수 있다. HTTP를 통한 REST API 또는 Elasticsearch 자체에서 node 간 통신을 위해 사용하는 내부 Java API를 사용할 수 있다.So, what's the difference between these two APIs? W..

From Elasticsearch 5.0 on all settings are validated before they are applied. Node level and default index level settings are validated on node startup, dynamic cluster and index setting are validated before they are updated/added to the cluster state.Elasticsearch 5.0 부터 모든 설정의 적용되기 전에 유효성을 검사한다. node level과 index level 설정은 시작 시에 유효성이 검사되고, 동적 cluster 및 index 설정은 cluster state에 업데이트/추가되기 전에 유효성..

Transport client has been movededitThe Java transport client has been moved to its own module which can be referenced using:Java transport client는 다음을 사용하여 참조할 수 있는 자체 module로 옮겨졌다. org.elasticsearch.client transport 5.0.0 The transport client is now created using the following snippet:이제 transport client는 다음 code를 이용하여 생성한다.TransportClient client = new PreBuiltTransportClient(Settings.EMPTY) .a..

Switched Default Language from Groovy to PainlesseditThe default scripting language for Elasticsearch is now Painless. Painless is a custom-built language with syntax similar to Groovy designed to be fast as well as secure. Many Groovy scripts will be identitical to Painless scripts to help make the transition between languages as simple as possible.Elasticsearch의 기본 script 언어는 이제 Painless이다. Pa..

Rivers have been removededitElasticsearch does not support rivers anymore. While we had first planned to keep them around to ease migration, keeping support for rivers proved to be challenging as it conflicted with other important changes that we wanted to bring to 2.0 like synchronous dynamic mappings updates, so we eventually decided to remove them entirely. See Deprecating Rivers for more bac..

How you talk to Elasticsearch depends on whether you are using Java.Elasticsearch와 통신하는 방법은 Java 사용 여부에 달려 있다.Java APIeditIf you are using Java, Elasticsearch comes with two built-in clients that you can use in your code:만약 Java 를 사용한다면, Elasticsearch는, 코드에서 사용할 수 있는, 두 종류의 기본 클라이언트를 제공한다.Node clientThe node client joins a local cluster as a non data node. In other words, it doesn’t hold any dat..