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标签 Tag : 0.14

ElasticSearch0.14 New Features

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开发中的ElasticSearch又带来了一些新的features和改进,非常不错,下面简单的介绍下我比较关注的。

1.字段不需要显式的保存了,如果字段没有设置为保存,ES默认会从_source文档抽取对应的字段,大大节省存储空间哦,并且一般直接使用field的值的情况也是少见的,不过如果_sources也没有保存,则没有办法了。#562

2.Parent / Child 的支持,这个得好好说说,通过定义两索引为父子关系,实现两索引的关联和联合查询,可以实现类似于数据库的join操作,避免因为一点点小的修改而造成的整个索引的重建。#553
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