不爲也 比不能也

This section discusses the changes that you need to be aware of when migrating your application from one version of Elasticsearch to another.여기에서는 application을 Elasticsearch 다른 version으로 migration할 경우 알아야 할 변경 사항에 대해 이야기한다.As a general rule:일반적으로Migration between minor versions — e.g. 5.x to 5.y — can be performed by upgrading one node at a time.minor version간(예: 5.x 에서 5.y 로)의 migration은 upgrad..

Java High Level REST ClienteditStarting from version 5.6.0 a new Java client has been released: the Java High Level REST Client. This official high-level client (named like this to differentiate it from the existing low-level client) for Elasticsearch can be used to execute search, index, delete, update and bulk operations using the same Core Java classes as the TransportClient uses.5.6.0 부터는 새로..

Ignoring hidden folderseditPrevious versions of Elasticsearch would skip hidden files and directories when scanning the plugins folder. This allows broken plugin installs to remain undetected so this leniency has been removed.이전 버전의 Elasticsearch는 plugin folder를 검사할 때 숨겨진 파일과 디렉토리를 생략했다. 이렇게 하면 깨진 plugin 설치가 탐지되지 않고 남아있어, 이 관용이 제거되었다.Skip setting kernel parameterseditElasticsearch attempts to se..

Delete By Query API changeseditRequests without an explicit query are deprecated and will be invalid in Elasticsearch 6.0.0.명시적인 query가 없는 request는 deprecate되었고, Elasticsearch 6.0.0 에서는 유효하지 않을 것이다.

Packaging changeseditLogging configurationeditPreviously Elasticsearch exposed a single system property (es.logs) that included the absolute path to the configured logs directory, and the prefix of the filenames used for the various logging files (the main log file, the deprecation log, and the slow logs). This property has been replaced in favor of three properties:이전 Elasticsearch에서는 설정된 logs ..

Packaging changeseditSystem call bootstrap checkeditElasticsearch has attempted to install a system call filter since version 2.1.0. On some systems, installing this system call filter could fail. Previous versions of Elasticsearch would log a warning, but would otherwise continue executing potentially leaving the end-user unaware of this situation. Starting in Elasticsearch 5.2.0, there is now ..

Shadow Replicas don’t see much usage and we are planning to remove them.Shadow Replicas는 많이 사용되는 않는 것으로 보여 제거를 계획중이다.

Indices API changeseditAlias names are validated against (most of) the rules for index nameseditAlias names are now validated against almost the same set of rules that validate index names. The only difference is that aliases are allowed to have uppercase characters. That means that aliases may not:이제 alias 이름은 index 이름에 대한 유효성 검사와 거의 동일한 규칙 집합으로, 유효성 검사가 수행됩니다. 유일한 차이점은 alias에서는 대문자가 허용된다는 것이다...

This section discusses the changes that you need to be aware of when migrating your application to Elasticsearch 5.0.여기에서는 application을 Elasticsearch 5.0 으로 migration할 경우 알아야 할 변경 사항에 대해 이야기한다.Migration PlugineditThe elasticsearch-migration plugin (compatible with Elasticsearch 2.3.0 and above) will help you to find issues that need to be addressed when upgrading to Elasticsearch 5.0.elasticsear..

search_typeeditsearch_type=count removededitThe count search type was deprecated since version 2.0.0 and is now removed. In order to get the same benefits, you just need to set the value of the size parameter to 0.count search type은 2.0.0 이후 deprecate되었고, 이제 제거되었다. 동일한 효과를 얻으려면, sizeparameter를 0 으로 설정하면 된다.For instance, the following request:예를 들어, 다음 request는GET /my_index/_search?search_type=co..