弹性搜索中如何物理存储数据？ [英] How data is stored physically in elastic search?
问题描述
如果我导航到弹性搜索的数据目录：
If I navigate to Data directory of elastic search :
/ nodes / 0 / indices / gb
/nodes/0/indices/gb
树命令显示如下：
├── 0
│ ├── index
│ │ ├── segments_6
│ │ └── write.lock
│ ├── _state
│ │ └── state-6.st
│ └── translog
│ ├── translog-1.ckp
│ ├── translog-2.ckp
│ ├── translog-3.ckp
│ ├── translog-4.ckp
│ ├── translog-5.ckp
│ ├── translog-5.tlog
│ ├── translog-6.ckp
│ ├── translog-6.tlog
│ ├── translog-7.tlog
│ └── translog.ckp
├── 1
│ ├── index
│ │ ├── _0_1.liv
│ │ ├── _0.cfe
│ │ ├── _0.cfs
│ │ ├── _0.si
│ │ ├── _1.cfe
│ │ ├── _1.cfs
│ │ ├── _1.si
│ │ ├── segments_9
│ │ └── write.lock
│ ├── _state
│ │ └── state-6.st
│ └── translog
│ ├── translog-2.ckp
│ ├── translog-3.ckp
│ ├── translog-4.ckp
│ ├── translog-5.ckp
│ ├── translog-9.tlog
│ └── translog.ckp
├── 2
│ ├── index
│ │ ├── _0.cfe
│ │ ├── _0.cfs
│ │ ├── _0.si
│ │ ├── segments_7
│ │ └── write.lock
│ ├── _state
│ │ └── state-6.st
│ └── translog
│ ├── translog-2.ckp
│ ├── translog-3.ckp
│ ├── translog-4.ckp
│ ├── translog-5.ckp
│ ├── translog-6.ckp
│ ├── translog-6.tlog
│ ├── translog-7.ckp
│ ├── translog-7.tlog
│ ├── translog-8.tlog
│ └── translog.ckp
├── 3
│ ├── index
│ │ ├── _0.cfe
│ │ ├── _0.cfs
│ │ ├── _0.si
│ │ ├── segments_7
│ │ └── write.lock
│ ├── _state
│ │ └── state-6.st
│ └── translog
│ ├── translog-2.ckp
│ ├── translog-3.ckp
│ ├── translog-4.ckp
│ ├── translog-5.ckp
│ ├── translog-6.ckp
│ ├── translog-6.tlog
│ ├── translog-7.ckp
│ ├── translog-7.tlog
│ ├── translog-8.tlog
│ └── translog.ckp
├── 4
│ ├── index
│ │ ├── _0.cfe
│ │ ├── _0.cfs
│ │ ├── _0.si
│ │ ├── segments_7
│ │ └── write.lock
│ ├── _state
│ │ └── state-6.st
│ └── translog
│ ├── translog-2.ckp
│ ├── translog-3.ckp
│ ├── translog-4.ckp
│ ├── translog-5.ckp
│ ├── translog-6.ckp
│ ├── translog-6.tlog
│ ├── translog-7.ckp
│ ├── translog-7.tlog
│ ├── translog-8.tlog
│ └── translog.ckp
└── _state
└── state-8.st
哪个文件包含实际数据？我怎么能看到呢？
Which of the file contains actual data ? How can I see That ?
推荐答案
所有这些文件都包含数据，每个文件都包含特定类型的数据（倒排索引，字段数据，文档值等）。 索引子文件夹中的文件为由Lucene创建的文件，用于存储所有需要的数据：
All those files contain data and each contains a specific type of data (inverted index, field data, document values, etc). The files in the index sub-folder are files created by Lucene in order to store all the needed data:
cfeandcfsfiles are compound fileslivfiles are live document filessifiles are segment info files- ...
还有更多可用的文件类型（术语频率，术语接近度等）正如我在上面给出的第一个链接中所见。所有这些文件都是二进制文件，您不能简单地使用文本编辑器进行查看。您可以使用Lucene工具箱中的 Luke工具来查看这些文件的内容。
There are many more file types available (term frequency, term proximity, etc) as can be seen in the first link I gave above. All those files are binary files that you cannot simply view with a text editor. You can use the Luke tool from the Lucene Toolbox in order to view the content of those files.
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