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| --><h1 id="发行版本" tabindex="-1"><a class="header-anchor" href="#发行版本" aria-hidden="true">#</a> 发行版本</h1><table><tr><th>版本</th><th colspan="3">IoTDB 二进制包</th><th colspan="3">IoTDB 源代码</th><th>发布说明</th></tr><tr><td rowspan="2">1.1.0</td><td><a href="https://www.apache.org/dyn/closer.cgi/iotdb/1.1.0/apache-iotdb-1.1.0-all-bin.zip">All-in-one</a></td><td><a href="https://downloads.apache.org/iotdb/1.1.0/apache-iotdb-1.1.0-all-bin.zip.sha512">SHA512</a></td><td><a href="https://downloads.apache.org/iotdb/1.1.0/apache-iotdb-1.1.0-all-bin.zip.asc">ASC</a></td><td rowspan="2"><a href="https://www.apache.org/dyn/closer.cgi/iotdb/1.1.0/apache-iotdb-1.1.0-source-release.zip">源代码</a></td><td rowspan="2"><a href="https://downloads.apache.org/iotdb/1.1.0/apache-iotdb-1.1.0-source-release.zip.sha512">SHA512</a></td><td rowspan="2"><a href="https://downloads.apache.org/iotdb/1.1.0/apache-iotdb-1.1.0-source-release.zip.asc">ASC</a></td><td rowspan="2"><a href="https://raw.githubusercontent.com/apache/iotdb/rel/1.1/RELEASE_NOTES.md">release notes</a></td></tr><tr><td><a href="https://www.apache.org/dyn/closer.cgi/iotdb/1.1.0/apache-iotdb-1.1.0-grafana-plugin-bin.zip">Grafana 插件</a></td><td><a href="https://downloads.apache.org/iotdb/1.1.0/apache-iotdb-1.1.0-grafana-plugin-bin.zip.sha512">SHA512</a></td><td><a href="https://downloads.apache.org/iotdb/1.1.0/apache-iotdb-1.1.0-grafana-plugin-bin.zip.asc">ASC</a></td></tr><tr><td rowspan="3">0.13.4</td><td><a href="https://dlcdn.apache.org/iotdb/0.13.4/apache-iotdb-0.13.4-all-bin.zip">All-in-one</a></td><td><a href="https://dlcdn.apache.org/iotdb/0.13.4/apache-iotdb-0.13.4-all-bin.zip.sha512">SHA512</a></td><td><a href="https://dlcdn.apache.org/iotdb/0.13.4/apache-iotdb-0.13.4-all-bin.zip.asc">ASC</a></td><td rowspan="3"><a href="https://dlcdn.apache.org/iotdb/0.13.4/apache-iotdb-0.13.4-source-release.zip">源代码</a></td><td rowspan="3"><a href="https://dlcdn.apache.org/iotdb/0.13.4/apache-iotdb-0.13.4-source-release.zip.sha512">SHA512</a></td><td rowspan="3"><a href="https://dlcdn.apache.org/iotdb/0.13.4/apache-iotdb-0.13.4-source-release.zip.asc">ASC</a></td><td rowspan="3"><a href="https://archive.apache.org/dist/iotdb/0.13.4/RELEASE_NOTES.md">release notes</a></td></tr><tr><td><a href="https://dlcdn.apache.org/iotdb/0.13.4/apache-iotdb-0.13.4-grafana-connector-bin.zip">Grafana 连接器</a></td><td><a href="https://dlcdn.apache.org/iotdb/0.13.4/apache-iotdb-0.13.4-grafana-connector-bin.zip.sha512">SHA512</a></td><td><a href="https://dlcdn.apache.org/iotdb/0.13.4/apache-iotdb-0.13.4-grafana-connector-bin.zip.asc">ASC</a></td></tr><tr><td><a href="https://www.apache.org/dyn/closer.cgi/iotdb/0.13.3/apache-iotdb-0.13.3-grafana-plugin-bin.zip">Grafana 插件</a></td><td><a href="https://downloads.apache.org/iotdb/0.13.3/apache-iotdb-0.13.3-grafana-plugin-bin.zip.sha512">SHA512</a></td><td><a href="https://downloads.apache.org/iotdb/0.13.3/apache-iotdb-0.13.3-grafana-plugin-bin.zip.asc">ASC</a></td></tr></table><p>历史版本下载:<a href="https://archive.apache.org/dist/iotdb/" target="_blank" rel="noopener noreferrer">https://archive.apache.org/dist/iotdb/<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></p><h2 id="环境配置" tabindex="-1"><a class="header-anchor" href="#环境配置" aria-hidden="true">#</a> 环境配置</h2><ul><li>推荐修改的操作系统参数 <ul><li>将 somaxconn 设置为 65535 以避免系统在高负载时出现 "connection reset" 错误。<div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code># Linux |
| > sudo sysctl -w net.core.somaxconn=65535 |
| |
| # FreeBSD or Darwin |
| > sudo sysctl -w kern.ipc.somaxconn=65535 |
| </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></div></li></ul></li></ul><h2 id="关于-version-1-0" tabindex="-1"><a class="header-anchor" href="#关于-version-1-0" aria-hidden="true">#</a> 关于 Version 1.0</h2><ul><li><p>如何从 v0.13.x 升级到 v1.0.x?</p><ul><li><strong>1.0版本进行了 SQL 语法约定的改动(请参考用户手册语法约定章节),不兼容之处可以参考下方1.0 版本不兼容的语法详细说明</strong>。</li><li>为了保证 UDF 相关 API 的稳定性,1.0 版本中 UDF 相关 API 被独立为一个单独的 module,不再依赖 tsfile 包,已经实现的 UDF 需要改写代码,将 <code>TsDataType</code> 替换为 <code>Type</code>,将 <code>org.apache.iotdb.tsfile.utils.Binary</code> 替换成 <code>org.apache.iotdb.udf.api.type.Binary</code>,并重新进行打包装载流程。</li></ul></li></ul><h3 id="_1-0-版本不兼容的语法详细说明" tabindex="-1"><a class="header-anchor" href="#_1-0-版本不兼容的语法详细说明" aria-hidden="true">#</a> 1.0 版本不兼容的语法详细说明</h3><p>在之前版本的语法约定中,为了保持兼容性,我们引入了一些会引起歧义的规定。为了避免歧义,我们设计了新的语法约定,本章将说明旧语法约定中存在的问题,以及我们做出改动的原因。</p><h4 id="标识符限制增强" tabindex="-1"><a class="header-anchor" href="#标识符限制增强" aria-hidden="true">#</a> 标识符限制增强</h4><p>在0.13及之前版本中,不使用反引号引用的标识符(包括路径结点)允许为实数(实数路径名在 <code>SELECT</code> 子句中需要用反引号括起),且允许包含部分特殊字符,<strong>在 1.0 版本中,不使用反引号引用的标识符不允许为实数,不使用反引号引用的标识符,只允许包含字母、中文字符、下划线。</strong></p><h4 id="路径名使用的相关问题" tabindex="-1"><a class="header-anchor" href="#路径名使用的相关问题" aria-hidden="true">#</a> 路径名使用的相关问题</h4><p>在旧语法约定中,什么时候需要给路径结点名添加引号,用单双引号还是反引号的规则较为复杂,在新的语法约定中我们做了统一,具体可以参考本文档的相关章节。</p><h5 id="单双引号和反引号的使用时机" tabindex="-1"><a class="header-anchor" href="#单双引号和反引号的使用时机" aria-hidden="true">#</a> 单双引号和反引号的使用时机</h5><p>在之前的语法约定中,路径结点名被定义成标识符,但是当需要在路径结点名中使用路径分隔符 . 时,需要使用单引号或者双引号引用。这与标识符使用反引号引用的规则相悖。</p><div class="language-SQL line-numbers-mode" data-ext="SQL"><pre class="language-SQL"><code># 在之前的语法约定中,如果需要创建时间序列 root.sg.`www.baidu.com`,需要使用下述语句: |
| create root.sg.'www.baidu.com' with datatype=BOOLEAN, encoding=PLAIN |
| |
| # 该语句创建的时间序列实际为 root.sg.'www.baidu.com',即引号一并存入,该时间序列的三个结点为{"root","sg","'www.baidu.com'"} |
| |
| # 在查询语句中,如果希望查询该时间序列的数据,查询语句如下: |
| select 'www.baidu.com' from root.sg; |
| </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></div><p><strong>而在 1.0 版本的语法约定中,特殊路径结点名统一使用反引号引用:</strong></p><div class="language-SQL line-numbers-mode" data-ext="SQL"><pre class="language-SQL"><code># 在现有语法约定中,如果需要创建时间序列 root.sg.`www.baidu.com`,语法如下: |
| create root.sg.`www.baidu.com` with datatype = BOOLEAN, encoding = PLAIN |
| |
| # 查询该时间序列可以通过如下语句: |
| select `www.baidu.com` from root.sg; |
| </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></div><h5 id="路径结点名内部使用引号的问题" tabindex="-1"><a class="header-anchor" href="#路径结点名内部使用引号的问题" aria-hidden="true">#</a> 路径结点名内部使用引号的问题</h5><p>在旧语法约定中,在路径结点名中使用单引号 ' 和 双引号 " 时,需要使用反斜杠 \ 进行转义,且反斜杠会被视为路径结点名的一部分存入,而在使用其它标识符时没有这个限制,造成了不统一。</p><div class="language-SQL line-numbers-mode" data-ext="SQL"><pre class="language-SQL"><code># 创建时间序列 root.sg.\"a |
| create timeseries root.sg.`\"a` with datatype=TEXT,encoding=PLAIN; |
| |
| # 查询时间序列 root.sg.\"a |
| select `\"a` from root.sg; |
| +-----------------------------+-----------+ |
| | Time|root.sg.\"a| |
| +-----------------------------+-----------+ |
| |1970-01-01T08:00:00.004+08:00| test| |
| +-----------------------------+-----------+ |
| </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></div><p><strong>在新语法约定中,特殊路径结点名统一使用反引号进行引用</strong>,在路径结点名中使用单双引号无须添加反斜杠转义,使用反引号需要双写,具体可以参考新语法约定路径结点名章节。</p><h4 id="session-接口相关" tabindex="-1"><a class="header-anchor" href="#session-接口相关" aria-hidden="true">#</a> Session 接口相关</h4><h5 id="session-接口语法限制" tabindex="-1"><a class="header-anchor" href="#session-接口语法限制" aria-hidden="true">#</a> Session 接口语法限制</h5><p>在0.13版本中,对于非SQL接口中使用路径结点的限制如下:</p><ul><li>经参数传入的路径或路径前缀中的节点: <ul><li>在 SQL 语句中需要使用反引号(`)进行转义的,此处均不需要进行转义。</li><li>使用单引号或双引号括起的节点,仍需要使用单引号或双引号括起,并且要针对 JAVA 字符串进行反转义。</li><li>对于 <code>checkTimeseriesExists</code> 接口,由于内部调用了 IoTDB-SQL 接口,因此需要和 SQL 语法规范保持一致,并且针对 JAVA 字符串进行反转义。</li></ul></li></ul><p><strong>1.0 版本中,对非SQL接口中使用路径结点的限制增强:</strong></p><ul><li><p><strong>经参数传入的路径或路径前缀中的节点: 在 SQL 语句中需要使用反引号(`)进行转义的,均需要使用反引号进行转义。</strong></p></li><li><p><strong>语法说明相关代码示例可以参考:</strong><code>example/session/src/main/java/org/apache/iotdb/SyntaxConventionRelatedExample.java</code></p></li></ul><h5 id="sql和session接口对字符串反转义处理不一致" tabindex="-1"><a class="header-anchor" href="#sql和session接口对字符串反转义处理不一致" aria-hidden="true">#</a> SQL和Session接口对字符串反转义处理不一致</h5><p><strong>在之前版本中,使用字符串时,SQL 和 Session 接口存在不一致的情况</strong>。比如使用 SQL 插入 Text 类型数据时,会对字符串进行反转义处理,而使用 Session 接口时不会进行这样的处理,存在不一致。<strong>在新的语法约定中,我们统一不对字符串做反转义处理,存入什么内容,在查询时就会得到什么内容(字符串内部使用单双引号的规则可以参考本文档字符串常量章节)。</strong></p><p><strong>下面是旧语法约定中不一致的例子:</strong></p><p>使用 Session 的 insertRecord 方法向时序 root.sg.a 中插入数据</p><div class="language-Java line-numbers-mode" data-ext="Java"><pre class="language-Java"><code>// session 插入 |
| String deviceId = "root.sg"; |
| List<String> measurements = new ArrayList<>(); |
| measurements.add("a"); |
| String[] values = new String[]{"\\\\", "\\t", "\\\"", "\\u96d5"}; |
| for(int i = 0; i <= values.length; i++){ |
| List<String> valueList = new ArrayList<>(); |
| valueList.add(values[i]); |
| session.insertRecord(deviceId, i + 1, measurements, valueList); |
| } |
| </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></div><p>查询 root.sg.a 的数据,可以看到没有做反转义处理:</p><div class="language-Plain%20Text line-numbers-mode" data-ext="Plain%20Text"><pre class="language-Plain%20Text"><code>// 查询结果 |
| +-----------------------------+---------+ |
| | Time|root.sg.a| |
| +-----------------------------+---------+ |
| |1970-01-01T08:00:00.001+08:00| \\| |
| |1970-01-01T08:00:00.002+08:00| \t| |
| |1970-01-01T08:00:00.003+08:00| \"| |
| |1970-01-01T08:00:00.004+08:00| \u96d5| |
| +-----------------------------+---------+ |
| </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></div><p>而使用 SQL 向 root.sg.a 中插入数据</p><div class="language-SQL line-numbers-mode" data-ext="SQL"><pre class="language-SQL"><code># SQL 插入 |
| insert into root.sg(time, a) values(1, "\\") |
| insert into root.sg(time, a) values(2, "\t") |
| insert into root.sg(time, a) values(3, "\"") |
| insert into root.sg(time, a) values(4, "\u96d5") |
| </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></div><p>查询 root.sg.a 的数据,可以看到字符串进行了反转义:</p><div class="language-Plain%20Text line-numbers-mode" data-ext="Plain%20Text"><pre class="language-Plain%20Text"><code>// 查询结果 |
| +-----------------------------+---------+ |
| | Time|root.sg.a| |
| +-----------------------------+---------+ |
| |1970-01-01T08:00:00.001+08:00| \| |
| |1970-01-01T08:00:00.002+08:00| | |
| |1970-01-01T08:00:00.003+08:00| "| |
| |1970-01-01T08:00:00.004+08:00| 雕| |
| +-----------------------------+---------+ |
| </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></div><h1 id="如何升级" tabindex="-1"><a class="header-anchor" href="#如何升级" aria-hidden="true">#</a> 如何升级</h1><ul><li><p>如何升级小版本 (例如,从 v0.12.4 to v0.12.5)?</p><ul><li>同一个大版本下的多个小版本是互相兼容的。</li><li>只需要下载新的小版本, 然后修改其配置文件,使其与原有版本的设置一致。</li><li>停掉旧版本进程,启动新版本即可。</li></ul></li><li><p>如何从 v0.13.x 升级到 v1.0.x?</p><ul><li>0.13版本与1.0版本的文件目录结构不同,<strong><!----></strong>。如果需要将0.13的数据导入至1.0,可以使用<a href="/zh/UserGuide/Maintenance-Tools/Load-Tsfile.html" class="">LOAD</a>功能;</li><li><strong>0.13版本的默认RPC地址是0.0.0.0,1.0版本的默认RPC地址是127.0.0.1</strong></li></ul></li><li><p>如何从 v1.0.0 升级到 v1.x.0?</p><ul><li>停止写入,下载新版本文件,将lib文件夹全部替换,重启即可</li></ul></li><li><p>如何从 v0.12.x 升级到 v0.13.x?</p><ul><li>0.12 与 0.13 的数据文件格式兼容,但写前日志等格式不兼容,因此需要进行升级(但速度很快):</li><li><strong><!----></strong></li><li>在 CLI 执行 <code>flush</code> 命令,确保关闭所有的 TsFile 文件。</li><li>我们推荐提前备份整个 data 目录,以备回滚。</li><li>下载最新 0.13 版本,解压并修改配置文件,尤其是 <strong><!----></strong>。并将各数据目录都指向备份的或者 v0.12 原来使用的数据目录。</li><li>停止 v0.12 的实例,启动 v0.13 的实例。</li><li><strong><!----></strong></li><li><strong>注意:0.13 的配置文件进行了较大改动,因此不要直接将 0.12 的配置文件用于 0.13</strong></li><li><strong>0.13 进行了 SQL 语法的改动,不使用反引号括起的标识符中仅能包含如下字符,否则需要使用反引号括起。</strong><ul><li><strong>[0-9 a-z A-Z _ : @ # $ { }] (字母,数字,部分特殊字符)</strong></li><li><strong>['\u2E80'..'\u9FFF'] (UNICODE 中文字符)</strong></li></ul></li><li><strong>0.13 中 <code>SELECT</code> 子句中路径结点名如果是实数,需要使用反引号引起,用于与表达式中的常数区分。如语句 "select 123 + `123` from <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>",前一个123表示常数,后一个 `123`会和 <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a> 拼接,表示路径 <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>.`123`。</strong></li></ul></li><li><p>如何从 v0.11.x 或 v0.10.x 升级到 v0.12.x?</p><ul><li>从 0.11 或 0.10 升级到 0.12 的过程与 v0.9 升级到 v0.10 类似,升级工具会自动进行数据文件的升级。</li><li><strong><!----></strong></li><li>用 CLI 调用<code>flush</code>,确保关闭所有的 TsFile 文件。</li><li>我们推荐提前备份数据文件(以及写前日志和 mlog 文件),以备回滚。</li><li>下载最新版,解压并修改配置文件。将各数据目录都指向备份的或者 v0.11 或 0.10 原来使用的数据目录。 把 0.11 中的其他修改都放到 0.12 中。</li><li>停止旧版本 IoTDB 的实例,启动 v0.12 的实例。IoTDB 将后台自动升级数据文件格式。在升级过程中数据可以进行查询和写入。 <ul><li>当日志中显示<code>All files upgraded successfully! </code> 后代表升级成功。</li><li><strong>注意 1:0.12 的配置文件进行了较大改动,因此不要直接将原本的配置文件用于 0.12</strong></li><li><strong>注意 2: 由于 0.12 不支持从 0.9 或者更低版本升级,如果需要升级,请先升级到 0.10 版本</strong></li><li><strong>注意 3: 在文件升级完成前,最好不要进行 delete 操作。如果删除某个 database 内的数据且该 database 内存在待升级文件,删除会失败。</strong></li></ul></li></ul></li><li><p>如何从 v0.10.x 升级到 v0.11.x?</p><ul><li>0.10 与 0.11 的数据文件格式兼容,但写前日志等格式不兼容,因此需要进行升级(但速度很快):</li><li><strong><!----></strong></li><li>用 CLI 调用<code>flush</code>,确保关闭所有的 TsFile 文件。</li><li>我们推荐提前备份写前日志和 mlog 文件,以备回滚。</li><li>下载最新版,解压并修改配置文件。将各数据目录都指向备份的或者 v0.10 原来使用的数据目录。</li><li>停止 v0.10 的实例,启动 v0.11 的实例。IoTDB 将自动升级不兼容的文件格式。</li><li><strong>注意:0.11 的配置文件进行了较大改动,因此不要直接将 0.10 的配置文件用于 0.11</strong></li></ul></li><li><p>如何从 v0.9.x 升级到 v0.10.x?</p><ul><li><strong><!----></strong></li><li>用 CLI 调用<code>flush</code>,确保关闭所有的 TsFile 文件。</li><li>我们推荐提前备份数据文件(以及写前日志和 mlog 文件),以备回滚。</li><li>下载最新版,解压并修改配置文件。将各数据目录都指向备份的或者 v0.9 原来使用的数据目录。</li><li>停止 v0.9 的实例,启动 v0.10 的实例。IoTDB 将自动升级数据文件格式。</li></ul></li><li><p>如何从 0.8.x 升级到 v0.9.x?</p><ul><li>我们推荐提前备份数据文件(以及写前日志和 mlog 文件),以备回滚。</li><li>下载最新版,解压并修改配置文件。将各数据目录都指向备份的或者 v0.8 原来使用的数据目录。</li><li>停止 v0.8 的实例,启动 v0.9.x 的实例。IoTDB 将自动升级数据文件格式。</li></ul></li></ul><h1 id="所有版本" tabindex="-1"><a class="header-anchor" href="#所有版本" aria-hidden="true">#</a> 所有版本</h1><p>在 <a href="https://archive.apache.org/dist/iotdb/" target="_blank" rel="noopener noreferrer">Archive repository<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a> 查看所有版本</p><h1 id="验证哈希和签名" tabindex="-1"><a class="header-anchor" href="#验证哈希和签名" aria-hidden="true">#</a> 验证哈希和签名</h1><p>除了我们的发行版,我们还在 *.sha512 文件中提供了 sha512 散列,并在 *.asc 文件中提供了加密签名。 Apache Software Foundation 提供了广泛的教程来 <a href="http://www.apache.org/info/verification.html" target="_blank" rel="noopener noreferrer">验证哈希和签名<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>,您可以使用任何这些发布签名的 <a href="https://downloads.apache.org/iotdb/KEYS" target="_blank" rel="noopener noreferrer">KEYS<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a> 来遵循这些哈希和签名。</p></div><!----><footer class="page-meta"><div class="meta-item edit-link"><a href="https://github.com/apache/iotdb/edit/master/docs/zh/Download/README.md" rel="noopener noreferrer" target="_blank" aria-label="发现错误?在 GitHub 上编辑此页" class="nav-link label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" 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