弹性搜索：删除文档后如何释放商店大小 [英] elasticsearch: how to free store size after deleting documents

问题描述

在我的弹性搜索服务器上：
总文件数：300万，总大小：3.6G
然后，我删除了大约2.8百万个文档：
总共文档：约0.13万，总大小： 3.6G

我已经删除了文件，应该如何释放文件的大小？

解决方案

删除文件只会将其标记为已删除，因此不会被搜索。要回收磁盘空间，您必须优化索引：

  curl -XPOST'http：// localhost：9200 / _optimize？ only_expunge_deletes = true'
  

文档： http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/indices-optimize.html

更新

从Elasticsearch 2.1.x开始，优化 已被弃用，赞成 forcemerge 。
API是相同的，

  curl -XPOST'http：// localhost：9200 / _forcemerge？only_expunge_deletes = true'
  

On my elasticsearch server: total documents: 3 million, total size: 3.6G Then, I delete about 2.8 millions documents: total documents: about 0.13 million, total size: 3.6G

I have deleted the documents, how should I free the size of the documents?

解决方案

Deleting documents only flags these as deleted, so they would not be searched. To reclaim disk space, you have to optimize the index:

curl -XPOST 'http://localhost:9200/_optimize?only_expunge_deletes=true'

documentation: http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/indices-optimize.html

Update

Starting with Elasticsearch 2.1.x, optimize is deprecated in favor of forcemerge. The API is the same, only the endpoint did change.

curl -XPOST 'http://localhost:9200/_forcemerge?only_expunge_deletes=true'

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