| import{_ as a,C as n,O as o,P as r,ah as s,Q as e,U as t,ai as l,aW as d}from"./framework-62ad666a.js";const c={},h=d(`<h2 id="元数据导出操作" tabindex="-1"><a class="header-anchor" href="#元数据导出操作" aria-hidden="true">#</a> 元数据导出操作</h2><p>元数据导出操作会以 mlog.bin 和 tlog.txt 的形式将当前 IoTDB 中的存储组、时间序列、元数据模板信息进行归档，并导出到指定目录中。</p><p>导出的 mlog.bin 和 tlog.txt 文件可以增量的方式加载到已有元数据的 IoTDB 实例中。</p><h3 id="使用-sql-方式导出元数据" tabindex="-1"><a class="header-anchor" href="#使用-sql-方式导出元数据" aria-hidden="true">#</a> 使用 SQL 方式导出元数据</h3><p>元数据导出的 SQL 语句如下所示：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>EXPORT SCHEMA '<path/dir>' |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="使用脚本方式导出元数据" tabindex="-1"><a class="header-anchor" href="#使用脚本方式导出元数据" aria-hidden="true">#</a> 使用脚本方式导出元数据</h3><p>Linux/MacOS</p><blockquote><p>./exportSchema.sh -o /yourpath/targetDir -h 127.0.0.1 -p 6667 -u root -pw root</p></blockquote><p>Windows</p><blockquote><p>./exportSchema.bat -o /yourpath/targetDir -h 127.0.0.1 -p 6667 -u root -pw root</p></blockquote><p>使用脚本方式导出元数据时候，需要指定 IoTDB 元数据文件的导出目标目录（位于 IoTDB 服务器），注意导出目标目录必须为绝对路径。</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>usage: ExportSchema -o <target directory path> [-h <host address>] [-p <port>] [-u <user>] [-pw <password>] [-help] |
| -o <target directory path> Need to specify a absolute target directory |
| path on server（required) |
| -h <host address> Could specify a specify the IoTDB host |
| address, default is 127.0.0.1 (optional) |
| -p <port> Could specify a specify the IoTDB port, |
| default is 6667 (optional) |
| -u <user> Could specify the IoTDB user name, default |
| is root (optional) |
| -pw <password> Could specify the IoTDB password, default is |
| root (optional) |
| -help,--help Display help information |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="常见问题" tabindex="-1"><a class="header-anchor" href="#常见问题" aria-hidden="true">#</a> 常见问题</h3><ul><li>找不到或无法加载主类 ExportSchema <ul><li>可能是由于未设置环境变量 $IOTDB_HOME，请设置环境变量之后重试</li></ul></li><li>Encounter an error, because: File ... already exist. <ul><li>目标目录下已有 mlog.bin 或者 tlog.txt 文件，请检查目标目录之后重试</li></ul></li></ul><h2 id="元数据加载操作" tabindex="-1"><a class="header-anchor" href="#元数据加载操作" aria-hidden="true">#</a> 元数据加载操作</h2>`,16),p={href:"https://iotdb.apache.org/zh/UserGuide/V0.13.x/Maintenance-Tools/MLogLoad-Tool.html",target:"_blank",rel:"noopener noreferrer"};function u(m,g){const i=n("ExternalLinkIcon");return o(),r("div",null,[s(` |
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| Licensed to the Apache Software Foundation (ASF) under one |
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| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
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| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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| specific language governing permissions and limitations |
| under the License. |
| |
| `),h,e("p",null,[t("参考 "),e("a",p,[t("MLog 加载工具"),l(i)])])])}const v=a(c,[["render",u],["__file","Export-Schema-Tool.html.vue"]]);export{v as default}; |
