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end"></span></button><!----></section></li></ul><!----></aside><!--[--><main id="main-content" class="vp-page"><!--[--><!----><!----><nav class="vp-breadcrumb disable"></nav><div class="vp-page-title"><h1><!---->运维语句</h1><div class="page-info"><!----><!----><span class="page-date-info" aria-label="写作日期📅" data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon calendar-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="calendar icon" name="calendar"><path d="M716.4 110.137c0-18.753-14.72-33.473-33.472-33.473-18.753 0-33.473 14.72-33.473 33.473v33.473h66.993v-33.473zm-334.87 0c0-18.753-14.72-33.473-33.473-33.473s-33.52 14.72-33.52 33.473v33.473h66.993v-33.473zm468.81 33.52H716.4v100.465c0 18.753-14.72 33.473-33.472 33.473a33.145 33.145 0 01-33.473-33.473V143.657H381.53v100.465c0 18.753-14.72 33.473-33.473 33.473a33.145 33.145 0 01-33.473-33.473V143.657H180.6A134.314 134.314 0 0046.66 277.595v535.756A134.314 134.314 0 00180.6 947.289h669.74a134.36 134.36 0 00133.94-133.938V277.595a134.314 134.314 0 00-133.94-133.938zm33.473 267.877H147.126a33.145 33.145 0 01-33.473-33.473c0-18.752 14.72-33.473 33.473-33.473h736.687c18.752 0 33.472 14.72 33.472 33.473a33.145 33.145 0 01-33.472 33.473z"></path></svg><span data-allow-mismatch="text">2025/2/18</span><meta property="datePublished" content="2025-02-18T02:34:07.000Z"></span><!----><span class="page-reading-time-info" aria-label="阅读时间⌛" data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon" name="timer"><path d="M799.387 122.15c4.402-2.978 7.38-7.897 7.38-13.463v-1.165c0-8.933-7.38-16.312-16.312-16.312H256.33c-8.933 0-16.311 7.38-16.311 16.312v1.165c0 5.825 2.977 10.874 7.637 13.592 4.143 194.44 97.22 354.963 220.201 392.763-122.204 37.542-214.893 196.511-220.2 389.397-4.661 5.049-7.638 11.651-7.638 19.03v5.825h566.49v-5.825c0-7.379-2.849-13.981-7.509-18.9-5.049-193.016-97.867-351.985-220.2-389.527 123.24-37.67 216.446-198.453 220.588-392.892zM531.16 450.445v352.632c117.674 1.553 211.787 40.778 211.787 88.676H304.097c0-48.286 95.149-87.382 213.728-88.676V450.445c-93.077-3.107-167.901-81.297-167.901-177.093 0-8.803 6.99-15.793 15.793-15.793 8.803 0 15.794 6.99 15.794 15.793 0 80.261 63.69 145.635 142.01 145.635s142.011-65.374 142.011-145.635c0-8.803 6.99-15.793 15.794-15.793s15.793 6.99 15.793 15.793c0 95.019-73.789 172.82-165.96 177.093z"></path></svg><span>大约 14 分钟</span><meta property="timeRequired" content="PT14M"></span><!----><!----></div><hr></div><!----><div class="" vp-content><!----><div id="markdown-content"><h1 id="运维语句" tabindex="-1"><a class="header-anchor" href="#运维语句"><span>运维语句</span></a></h1><h2 id="_1-状态查看" tabindex="-1"><a class="header-anchor" href="#_1-状态查看"><span>1. 状态查看</span></a></h2><h3 id="_1-1-查看连接的模型" tabindex="-1"><a class="header-anchor" href="#_1-1-查看连接的模型"><span>1.1 查看连接的模型</span></a></h3><p><strong>含义</strong>：返回当前连接的 sql_dialect 是树模型/表模型。</p><h4 id="语法" tabindex="-1"><a class="header-anchor" href="#语法"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showCurrentSqlDialectStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW CURRENT_SQL_DIALECT</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="示例" tabindex="-1"><a class="header-anchor" href="#示例"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW CURRENT_SQL_DIALECT</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|CurrentSqlDialect|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">TABLE</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_1-2-查看登录的用户名" tabindex="-1"><a class="header-anchor" href="#_1-2-查看登录的用户名"><span>1.2 查看登录的用户名</span></a></h3><p><strong>含义</strong>：返回当前登录的用户名。</p><h4 id="语法-1" tabindex="-1"><a class="header-anchor" href="#语法-1"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showCurrentUserStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW CURRENT_USER</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="示例-1" tabindex="-1"><a class="header-anchor" href="#示例-1"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW CURRENT_USER</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|CurrentUser|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_1-3-查看连接的数据库名" tabindex="-1"><a class="header-anchor" href="#_1-3-查看连接的数据库名"><span>1.3 查看连接的数据库名</span></a></h3><p><strong>含义</strong>：返回当前连接的数据库名，若没有执行过 use 语句，则为 null。</p><h4 id="语法-2" tabindex="-1"><a class="header-anchor" href="#语法-2"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showCurrentDatabaseStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW CURRENT_DATABASE</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="示例-2" tabindex="-1"><a class="header-anchor" href="#示例-2"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW CURRENT_DATABASE;</span></span>
<span class="line"></span>
<span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#C678DD;"> USE</span><span style="color:#ABB2BF;"> test;</span></span>
<span class="line"></span>
<span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW CURRENT_DATABASE;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">---------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|CurrentDatabase|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">---------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">null</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">---------------+</span></span>
<span class="line"></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">---------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|CurrentDatabase|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">---------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| test|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">---------------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_1-4-查看集群版本" tabindex="-1"><a class="header-anchor" href="#_1-4-查看集群版本"><span>1.4 查看集群版本</span></a></h3><p><strong>含义</strong>：返回当前集群的版本。</p><h4 id="语法-3" tabindex="-1"><a class="header-anchor" href="#语法-3"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showVersionStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW </span><span style="color:#C678DD;">VERSION</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="示例-3" tabindex="-1"><a class="header-anchor" href="#示例-3"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW </span><span style="color:#C678DD;">VERSION</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-------+---------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|</span><span style="color:#C678DD;">Version</span><span style="color:#ABB2BF;">|BuildInfo|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-------+---------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">| 1ca4008|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-------+---------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_1-5-查看集群关键参数" tabindex="-1"><a class="header-anchor" href="#_1-5-查看集群关键参数"><span>1.5 查看集群关键参数</span></a></h3><p><strong>含义</strong>：返回当前集群的关键参数。</p><h4 id="语法-4" tabindex="-1"><a class="header-anchor" href="#语法-4"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showVariablesStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW VARIABLES</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>关键参数如下：</p><ol><li><strong>ClusterName</strong>：当前集群的名称。</li><li><strong>DataReplicationFactor</strong>：数据副本的数量，表示每个数据分区（DataRegion）的副本数。</li><li><strong>SchemaReplicationFactor</strong>：元数据副本的数量，表示每个元数据分区（SchemaRegion）的副本数。</li><li><strong>DataRegionConsensusProtocolClass</strong>：数据分区（DataRegion）使用的共识协议类。</li><li><strong>SchemaRegionConsensusProtocolClass</strong>：元数据分区（SchemaRegion）使用的共识协议类。</li><li><strong>ConfigNodeConsensusProtocolClass</strong>：配置节点（ConfigNode）使用的共识协议类。</li><li><strong>TimePartitionOrigin</strong>：数据库时间分区的起始时间戳。</li><li><strong>TimePartitionInterval</strong>：数据库的时间分区间隔（单位：毫秒）。</li><li><strong>ReadConsistencyLevel</strong>：读取操作的一致性级别。</li><li><strong>SchemaRegionPerDataNode</strong>：数据节点（DataNode）上的元数据分区（SchemaRegion）数量。</li><li><strong>DataRegionPerDataNode</strong>：数据节点（DataNode）上的数据分区（DataRegion）数量。</li><li><strong>SeriesSlotNum</strong>：数据分区（DataRegion）的序列槽（SeriesSlot）数量。</li><li><strong>SeriesSlotExecutorClass</strong>：序列槽的实现类。</li><li><strong>DiskSpaceWarningThreshold</strong>：磁盘空间告警阈值（单位：百分比）。</li><li><strong>TimestampPrecision</strong>：时间戳精度。</li></ol><h4 id="示例-4" tabindex="-1"><a class="header-anchor" href="#示例-4"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW VARIABLES</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">----------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| Variable| </span><span style="color:#C678DD;">Value</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">----------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| ClusterName| defaultCluster|</span></span>
<span class="line"><span style="color:#ABB2BF;">| DataReplicationFactor| </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| SchemaReplicationFactor| </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| DataRegionConsensusProtocolClass| </span><span style="color:#D19A66;">org</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">apache</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">iotdb</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">consensus</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">iot</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">IoTConsensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">|SchemaRegionConsensusProtocolClass| </span><span style="color:#D19A66;">org</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">apache</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">iotdb</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">consensus</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ratis</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">RatisConsensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| ConfigNodeConsensusProtocolClass| </span><span style="color:#D19A66;">org</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">apache</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">iotdb</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">consensus</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ratis</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">RatisConsensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| TimePartitionOrigin| </span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| TimePartitionInterval| </span><span style="color:#D19A66;">604800000</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| ReadConsistencyLevel| strong|</span></span>
<span class="line"><span style="color:#ABB2BF;">| SchemaRegionPerDataNode| </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| DataRegionPerDataNode| </span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| SeriesSlotNum| </span><span style="color:#D19A66;">1000</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| SeriesSlotExecutorClass|</span><span style="color:#D19A66;">org</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">apache</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">iotdb</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">commons</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">partition</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">executor</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">hash</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">BKDRHashExecutor</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| DiskSpaceWarningThreshold| </span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| TimestampPrecision| ms|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">----------------------------------+-----------------------------------------------------------------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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="_1-6-查看集群id" tabindex="-1"><a class="header-anchor" href="#_1-6-查看集群id"><span>1.6 查看集群ID</span></a></h3><p><strong>含义</strong>：返回当前集群的ID。</p><h4 id="语法-5" tabindex="-1"><a class="header-anchor" href="#语法-5"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showClusterIdStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW (CLUSTERID | CLUSTER_ID)</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="示例-5" tabindex="-1"><a class="header-anchor" href="#示例-5"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW CLUSTER_ID</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| ClusterId|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|</span><span style="color:#D19A66;">40163007</span><span style="color:#ABB2BF;">-9ec1-</span><span style="color:#D19A66;">4455</span><span style="color:#ABB2BF;">-aa36-8055d740fcda|</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_1-7-查看客户端直连的-datanode-进程所在服务器的时间" tabindex="-1"><a class="header-anchor" href="#_1-7-查看客户端直连的-datanode-进程所在服务器的时间"><span>1.7 查看客户端直连的 DataNode 进程所在服务器的时间</span></a></h3><h4 id="语法-6" tabindex="-1"><a class="header-anchor" href="#语法-6"><span>语法：</span></a></h4><p><strong>含义</strong>：返回当前客户端直连的 DataNode 进程所在服务器的时间。</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showCurrentTimestampStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW CURRENT_TIMESTAMP</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="示例-6" tabindex="-1"><a class="header-anchor" href="#示例-6"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW CURRENT_TIMESTAMP</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| CurrentTimestamp|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|</span><span style="color:#D19A66;">2025</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">02</span><span style="color:#ABB2BF;">-17T11:</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">52</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">987</span><span style="color:#ABB2BF;">+</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------------------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_1-8-查看正在执行的查询信息" tabindex="-1"><a class="header-anchor" href="#_1-8-查看正在执行的查询信息"><span>1.8 查看正在执行的查询信息</span></a></h3><p><strong>含义</strong>：用于显示所有正在执行的查询信息。</p><blockquote><p>更多系统表使用方法请参考<a class="route-link" href="/zh/UserGuide/latest-Table/Reference/System-Tables_apache.html">系统表</a></p></blockquote><h4 id="语法-7" tabindex="-1"><a class="header-anchor" href="#语法-7"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showQueriesStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW (QUERIES | QUERY PROCESSLIST)</span></span>
<span class="line"><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">WHERE</span><span style="color:#C678DD;"> where</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">booleanExpression)?</span></span>
<span class="line"><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">ORDER BY</span><span style="color:#ABB2BF;"> sortItem (</span><span style="color:#98C379;">&#39;,&#39;</span><span style="color:#ABB2BF;"> sortItem)*)?</span></span>
<span class="line"><span style="color:#ABB2BF;"> limitOffsetClause</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>参数解释</strong>：</p><ol><li><strong>WHERE</strong> 子句：需保证过滤的目标列是结果集中存在的列</li><li><strong>ORDER BY</strong> 子句：需保证<code>sortKey</code>是结果集中存在的列</li><li><strong>limitOffsetClause</strong>： <ul><li><strong>含义</strong>：用于限制结果集的返回数量。</li><li><strong>格式</strong>：<code>LIMIT &lt;offset&gt;, &lt;row_count&gt;</code>， <code>&lt;offset&gt;</code> 是偏移量，<code>&lt;row_count&gt;</code> 是返回的行数。</li></ul></li><li><strong>QUERIES</strong> 表中的列： <ul><li><strong>query_id</strong>：查询语句的 ID</li><li><strong>start_time</strong>：查询开始的时间戳，时间戳精度与系统精度一致</li><li><strong>datanode_id</strong>：发起查询语句的 DataNode 的ID</li><li><strong>elapsed_time</strong>：查询的执行耗时，单位是秒</li><li><strong>statement</strong>：查询的 SQL 语句</li><li><strong>user</strong>：发起查询的用户</li></ul></li></ol><h4 id="示例-7" tabindex="-1"><a class="header-anchor" href="#示例-7"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW QUERIES </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> elapsed_time </span><span style="color:#56B6C2;">&gt;</span><span style="color:#D19A66;"> 30</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------------+-----------------------------+-----------+------------+------------+----+</span></span>
<span class="line"><span style="color:#ABB2BF;">| query_id| start_time|datanode_id|elapsed_time| </span><span style="color:#C678DD;">statement</span><span style="color:#ABB2BF;">|user|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------------+-----------------------------+-----------+------------+------------+----+</span></span>
<span class="line"><span style="color:#ABB2BF;">|20250108_101015_00000_1|</span><span style="color:#D19A66;">2025</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-08T18:</span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">15</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">935</span><span style="color:#ABB2BF;">+</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">32</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">283</span><span style="color:#ABB2BF;">|show queries|</span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------------+-----------------------------+-----------+------------+------------+----+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_1-9-查看分区信息" tabindex="-1"><a class="header-anchor" href="#_1-9-查看分区信息"><span>1.9 查看分区信息</span></a></h3><p><strong>含义</strong>：返回当前集群的分区信息。</p><h4 id="语法-8" tabindex="-1"><a class="header-anchor" href="#语法-8"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showRegionsStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW REGIONS</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="示例-8" tabindex="-1"><a class="header-anchor" href="#示例-8"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW REGIONS</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">--------+------------+-------+----------+-------------+-----------+----------+----------+-------+---------------+------+-----------------------+----------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|RegionId| </span><span style="color:#C678DD;">Type</span><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">Status</span><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">Database</span><span style="color:#ABB2BF;">|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|InternalAddress| </span><span style="color:#C678DD;">Role</span><span style="color:#ABB2BF;">| CreateTime|TsFileSize|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">--------+------------+-------+----------+-------------+-----------+----------+----------+-------+---------------+------+-----------------------+----------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">6</span><span style="color:#ABB2BF;">|SchemaRegion|Running|tcollector| </span><span style="color:#D19A66;">670</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">6667</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">127</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">|Leader|</span><span style="color:#D19A66;">2025</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">-01T17:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">194</span><span style="color:#ABB2BF;">| |</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">7</span><span style="color:#ABB2BF;">| DataRegion|Running|tcollector| </span><span style="color:#D19A66;">335</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">335</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">6667</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">127</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">|Leader|</span><span style="color:#D19A66;">2025</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">-01T17:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">196</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">169</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">85</span><span style="color:#ABB2BF;"> KB|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">8</span><span style="color:#ABB2BF;">| DataRegion|Running|tcollector| </span><span style="color:#D19A66;">335</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">335</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">6667</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">127</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">|Leader|</span><span style="color:#D19A66;">2025</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">-01T17:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">198</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">161</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">63</span><span style="color:#ABB2BF;"> KB|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">--------+------------+-------+----------+-------------+-----------+----------+----------+-------+---------------+------+-----------------------+----------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_1-10-查看可用节点" tabindex="-1"><a class="header-anchor" href="#_1-10-查看可用节点"><span>1.10 查看可用节点</span></a></h3><p><strong>含义</strong>：返回当前集群所有可用的 DataNode 的 RPC 地址和端口。注意：这里对于“可用”的定义为：处于非 REMOVING 状态的 DN 节点。</p><blockquote><p>V2.0.8 起支持该功能</p></blockquote><h4 id="语法-9" tabindex="-1"><a class="header-anchor" href="#语法-9"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showAvailableUrlsStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW AVAILABLE URLS</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="示例-9" tabindex="-1"><a class="header-anchor" href="#示例-9"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW AVAILABLE URLS</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">----------+-------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|RpcAddress|RpcPort|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">----------+-------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">6667</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">----------+-------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_1-11-查看服务信息" tabindex="-1"><a class="header-anchor" href="#_1-11-查看服务信息"><span>1.11 查看服务信息</span></a></h3><p><strong>含义</strong>：返回当前集群所有正常工作（RUNNING 或 READ-ONLY） DN 上的服务信息（MQTT 服务、REST 服务）。</p><blockquote><p>V2.0.8 起支持该功能</p></blockquote><h4 id="语法-10" tabindex="-1"><a class="header-anchor" href="#语法-10"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showServicesStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW SERVICES </span><span style="color:#56B6C2;">&lt;</span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> dataNodeId</span><span style="color:#56B6C2;">&gt;</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="示例-10" tabindex="-1"><a class="header-anchor" href="#示例-10"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW SERVICES</span></span>
<span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW SERVICES </span><span style="color:#C678DD;">ON</span><span style="color:#D19A66;"> 1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">------------+-----------+-------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|</span><span style="color:#C678DD;">service_name</span><span style="color:#ABB2BF;">|datanode_id| </span><span style="color:#C678DD;">state</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">------------+-----------+-------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| MQTT| </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">|</span><span style="color:#C678DD;">STOPPED</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| REST| </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">|RUNNING|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">------------+-----------+-------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_1-12-查看节点配置信息" tabindex="-1"><a class="header-anchor" href="#_1-12-查看节点配置信息"><span>1.12 查看节点配置信息</span></a></h3><p><strong>含义</strong>：默认返回指定节点（通过 <code>node_id</code> 指定）的配置文件中已生效的配置项；若未指定 <code>node_id</code>，则返回客户端直连的 DataNode 配置。 添加 <code>all</code> 参数返回所有配置项（未配置项的 <code>value</code> 为 <code>null</code>）；添加 <code>with desc</code> 参数返回配置项含描述信息。</p><blockquote><p>V2.0.9-beta 起支持该功能</p></blockquote><h4 id="语法-11" tabindex="-1"><a class="header-anchor" href="#语法-11"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">showConfigurationStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : SHOW (ALL)? </span><span style="color:#C678DD;">CONFIGURATION</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> nodeId</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">INTEGER_VALUE)? (</span><span style="color:#C678DD;">WITH</span><span style="color:#C678DD;"> DESC</span><span style="color:#ABB2BF;">)?</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="结果集说明" tabindex="-1"><a class="header-anchor" href="#结果集说明"><span>结果集说明</span></a></h4><table><thead><tr><th>列名</th><th>列类型</th><th>含义</th></tr></thead><tbody><tr><td>name</td><td>string</td><td>参数名</td></tr><tr><td>value</td><td>string</td><td>参数值</td></tr><tr><td>default_value</td><td>string</td><td>参数默认值</td></tr><tr><td>description</td><td>string</td><td>参数描述（可选）</td></tr></tbody></table><h4 id="示例-11" tabindex="-1"><a class="header-anchor" href="#示例-11"><span>示例：</span></a></h4><ol><li>查看客户端直连 DataNode 的配置信息</li></ol><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">show </span><span style="color:#C678DD;">configuration</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#61AFEF;">+--------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">name</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">value</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">default_value</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#61AFEF;">+--------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cluster_name</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">defaultCluster</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">defaultCluster</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_seed_config_node</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_seed_config_node</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_internal_address</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_internal_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10710</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_consensus_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10720</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10720</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_rpc_address</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0.0.0.0</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0.0.0.0</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_rpc_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">6667</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">6667</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_internal_address</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_internal_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10730</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10730</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_mpp_data_exchange_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10740</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10740</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_schema_region_consensus_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10750</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10750</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_data_region_consensus_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10760</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10760</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">schema_replication_factor</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">|</span><span style="color:#61AFEF;">schema_region_consensus_protocol_class</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.ratis.RatisConsensus</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.ratis.RatisConsensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">data_replication_factor</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">data_region_consensus_protocol_class</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.iot.IoTConsensus</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.iot.IoTConsensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_metric_prometheus_reporter_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">9091</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">9091</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_metric_prometheus_reporter_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">9092</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">9092</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">series_slot_num</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1000</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1000</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">series_partition_executor_class</span><span style="color:#ABB2BF;">|</span><span style="color:#61AFEF;">org.apache.iotdb.commons.partition.executor.hash.BKDRHashExecutor</span><span style="color:#ABB2BF;">|</span><span style="color:#61AFEF;">org.apache.iotdb.commons.partition.executor.hash.BKDRHashExecutor</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">time_partition_origin</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">time_partition_interval</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">604800000</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">604800000</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">disk_space_warning_threshold</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0.05</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0.05</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">schema_engine_mode</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">Memory</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">Memory</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">tag_attribute_total_size</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">700</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">700</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">read_consistency_level</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">strong</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">strong</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">timestamp_precision</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">ms</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">ms</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#61AFEF;">+--------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#61AFEF;">Total</span><span style="color:#98C379;"> line</span><span style="color:#98C379;"> number</span><span style="color:#98C379;"> =</span><span style="color:#D19A66;"> 28</span></span>
<span class="line"><span style="color:#61AFEF;">It</span><span style="color:#98C379;"> costs</span><span style="color:#98C379;"> 0.013s</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 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><ol start="2"><li>查看指定 node id 的节点配置信息</li></ol><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#61AFEF;">show</span><span style="color:#98C379;"> configuration</span><span style="color:#98C379;"> on</span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#61AFEF;">+--------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">name</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">value</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">default_value</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#61AFEF;">+--------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cluster_name</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">defaultCluster</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">defaultCluster</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_seed_config_node</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_seed_config_node</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_internal_address</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_internal_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10710</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_consensus_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10720</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10720</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_rpc_address</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0.0.0.0</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0.0.0.0</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_rpc_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">6667</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">6667</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_internal_address</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_internal_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10730</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10730</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_mpp_data_exchange_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10740</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10740</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_schema_region_consensus_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10750</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10750</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_data_region_consensus_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10760</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10760</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">schema_replication_factor</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">|</span><span style="color:#61AFEF;">schema_region_consensus_protocol_class</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.ratis.RatisConsensus</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.ratis.RatisConsensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">data_replication_factor</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">data_region_consensus_protocol_class</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.iot.IoTConsensus</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.iot.IoTConsensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_metric_prometheus_reporter_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">9091</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">9091</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_metric_prometheus_reporter_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">9092</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">9092</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">series_slot_num</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1000</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1000</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">series_partition_executor_class</span><span style="color:#ABB2BF;">|</span><span style="color:#61AFEF;">org.apache.iotdb.commons.partition.executor.hash.BKDRHashExecutor</span><span style="color:#ABB2BF;">|</span><span style="color:#61AFEF;">org.apache.iotdb.commons.partition.executor.hash.BKDRHashExecutor</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">time_partition_origin</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">time_partition_interval</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">604800000</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">604800000</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">disk_space_warning_threshold</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0.05</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0.05</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">schema_engine_mode</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">Memory</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">Memory</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">tag_attribute_total_size</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">700</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">700</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">read_consistency_level</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">strong</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">strong</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">timestamp_precision</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">ms</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">ms</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#61AFEF;">+--------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#61AFEF;">Total</span><span style="color:#98C379;"> line</span><span style="color:#98C379;"> number</span><span style="color:#98C379;"> =</span><span style="color:#D19A66;"> 28</span></span>
<span class="line"><span style="color:#61AFEF;">It</span><span style="color:#98C379;"> costs</span><span style="color:#98C379;"> 0.004s</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 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><ol start="3"><li>查看所有配置信息</li></ol><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#61AFEF;">show</span><span style="color:#98C379;"> all</span><span style="color:#98C379;"> configuration</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#61AFEF;">+---------------------------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">name</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">value</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">default_value</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#61AFEF;">+---------------------------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cluster_name</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">defaultCluster</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">defaultCluster</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_seed_config_node</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_seed_config_node</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_internal_address</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_internal_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10710</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_consensus_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10720</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10720</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_rpc_address</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0.0.0.0</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">0.0.0.0</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_rpc_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">6667</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">6667</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_internal_address</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_internal_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10730</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10730</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_mpp_data_exchange_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10740</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10740</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_schema_region_consensus_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10750</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10750</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_data_region_consensus_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10760</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10760</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_join_cluster_retry_interval_ms</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">5000</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">config_node_consensus_protocol_class</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.ratis.RatisConsensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">schema_replication_factor</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">schema_region_consensus_protocol_class</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.ratis.RatisConsensus</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.ratis.RatisConsensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">data_replication_factor</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">1</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">data_region_consensus_protocol_class</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.iot.IoTConsensus</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">org.apache.iotdb.consensus.iot.IoTConsensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_system_dir</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">data/confignode/system</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_consensus_dir</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">data/confignode/consensus</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cn_pipe_receiver_file_dir</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">data/confignode/system/pipe/receiver</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#56B6C2;">...</span></span>
<span class="line"><span style="color:#61AFEF;">+---------------------------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#61AFEF;">Total</span><span style="color:#98C379;"> line</span><span style="color:#98C379;"> number</span><span style="color:#98C379;"> =</span><span style="color:#D19A66;"> 412</span></span>
<span class="line"><span style="color:#61AFEF;">It</span><span style="color:#98C379;"> costs</span><span style="color:#98C379;"> 0.006s</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 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><ol start="4"><li>查看配置项描述信息</li></ol><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#61AFEF;">show</span><span style="color:#98C379;"> configuration</span><span style="color:#98C379;"> on</span><span style="color:#D19A66;"> 1</span><span style="color:#98C379;"> with</span><span style="color:#98C379;"> desc</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#61AFEF;">+--------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">name</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">value</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">default_value</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">description</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#61AFEF;">+--------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">cluster_name</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">defaultCluster</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">defaultCluster</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">Used</span><span style="color:#98C379;"> for</span><span style="color:#98C379;"> indicate</span><span style="color:#98C379;"> cluster</span><span style="color:#98C379;"> name</span><span style="color:#98C379;"> and</span><span style="color:#98C379;"> distinguish</span><span style="color:#98C379;"> different</span><span style="color:#98C379;"> cluster.</span><span style="color:#98C379;"> If</span><span style="color:#98C379;"> you</span><span style="color:#98C379;"> need</span><span style="color:#98C379;"> to</span><span style="color:#98C379;"> modify</span><span style="color:#98C379;"> the</span><span style="color:#98C379;"> cluster</span><span style="color:#98C379;"> name,</span><span style="color:#98C379;"> it&#39;s recommended to use &#39;set</span><span style="color:#98C379;"> configuration</span><span style="color:#98C379;"> &quot;cluster_name=xxx&quot;&#39; sql. Manually modifying configuration file is not recommended, which may cause node restart fail.effectiveMode: hot_reload.Datatype: string|</span></span>
<span class="line"><span style="color:#98C379;">| cn_seed_config_node| 127.0.0.1:10710| 127.0.0.1:10710|For the first ConfigNode to start, cn_seed_config_node points to its own cn_internal_address:cn_internal_port. For other ConfigNodes that to join the cluster, cn_seed_config_node points to any running ConfigNode&#39;s</span><span style="color:#98C379;"> cn_internal_address:cn_internal_port.</span><span style="color:#98C379;"> Note:</span><span style="color:#98C379;"> After</span><span style="color:#98C379;"> this</span><span style="color:#98C379;"> ConfigNode</span><span style="color:#98C379;"> successfully</span><span style="color:#98C379;"> joins</span><span style="color:#98C379;"> the</span><span style="color:#98C379;"> cluster</span><span style="color:#98C379;"> for</span><span style="color:#98C379;"> the</span><span style="color:#98C379;"> first</span><span style="color:#98C379;"> time,</span><span style="color:#98C379;"> this</span><span style="color:#98C379;"> parameter</span><span style="color:#98C379;"> is</span><span style="color:#98C379;"> no</span><span style="color:#98C379;"> longer</span><span style="color:#98C379;"> used.</span><span style="color:#98C379;"> Each</span><span style="color:#98C379;"> node</span><span style="color:#98C379;"> automatically</span><span style="color:#98C379;"> maintains</span><span style="color:#98C379;"> the</span><span style="color:#98C379;"> list</span><span style="color:#98C379;"> of</span><span style="color:#98C379;"> ConfigNodes</span><span style="color:#98C379;"> and</span><span style="color:#98C379;"> traverses</span><span style="color:#98C379;"> connections</span><span style="color:#98C379;"> when</span><span style="color:#98C379;"> restarting.</span><span style="color:#98C379;"> Format:</span><span style="color:#98C379;"> address:port</span><span style="color:#98C379;"> e.g.</span><span style="color:#98C379;"> 127.0.0.1:10710.effectiveMode:</span><span style="color:#98C379;"> first_start.Datatype:</span><span style="color:#98C379;"> String</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_seed_config_node</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">127.0.0.1:10710</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_seed_config_node</span><span style="color:#98C379;"> points</span><span style="color:#98C379;"> to</span><span style="color:#98C379;"> any</span><span style="color:#98C379;"> running</span><span style="color:#98C379;"> ConfigNode&#39;s cn_internal_address:cn_internal_port. Note: After this DataNode successfully joins the cluster for the first time, this parameter is no longer used. Each node automatically maintains the list of ConfigNodes and traverses connections when restarting. Format: address:port e.g. 127.0.0.1:10710.effectiveMode: first_start.Datatype: String|</span></span>
<span class="line"><span style="color:#98C379;">| cn_internal_address| 127.0.0.1| 127.0.0.1| Used for RPC communication inside cluster. Could set 127.0.0.1(for local test) or ipv4 address.effectiveMode: first_start.Datatype: String|</span></span>
<span class="line"><span style="color:#98C379;">| cn_internal_port| 10710| 10710| Used for RPC communication inside cluster.effectiveMode: first_start.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">| cn_consensus_port| 10720| 10720| Used for consensus communication among ConfigNodes inside cluster.effectiveMode: first_start.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">| dn_rpc_address| 0.0.0.0| 0.0.0.0| Used for connection of IoTDB native clients(Session) Could set 127.0.0.1(for local test) or ipv4 address.effectiveMode: restart.Datatype: String|</span></span>
<span class="line"><span style="color:#98C379;">| dn_rpc_port| 6667| 6667| Used for connection of IoTDB native clients(Session) Bind with dn_rpc_address.effectiveMode: restart.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">| dn_internal_address| 127.0.0.1| 127.0.0.1| Used for communication inside cluster. could set 127.0.0.1(for local test) or ipv4 address.effectiveMode: first_start.Datatype: String|</span></span>
<span class="line"><span style="color:#98C379;">| dn_internal_port| 10730| 10730| Used for communication inside cluster. Bind with dn_internal_address.effectiveMode: first_start.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">| dn_mpp_data_exchange_port| 10740| 10740| Port for data exchange among DataNodes inside cluster Bind with dn_internal_address.effectiveMode: first_start.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">| dn_schema_region_consensus_port| 10750| 10750| port for consensus&#39;s</span><span style="color:#98C379;"> communication</span><span style="color:#98C379;"> for</span><span style="color:#98C379;"> schema</span><span style="color:#98C379;"> region</span><span style="color:#98C379;"> inside</span><span style="color:#98C379;"> cluster.</span><span style="color:#98C379;"> Bind</span><span style="color:#98C379;"> with</span><span style="color:#98C379;"> dn_internal_address.effectiveMode:</span><span style="color:#98C379;"> first_start.Datatype:</span><span style="color:#98C379;"> int</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">dn_data_region_consensus_port</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10760</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">10760</span><span style="color:#ABB2BF;">| </span><span style="color:#61AFEF;">port</span><span style="color:#98C379;"> for</span><span style="color:#98C379;"> consensus&#39;s communication for data region inside cluster. Bind with dn_internal_address.effectiveMode: first_start.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">| schema_replication_factor| 1| 1| Default number of schema replicas.effectiveMode: first_start.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">|schema_region_consensus_protocol_class| org.apache.iotdb.consensus.ratis.RatisConsensus| org.apache.iotdb.consensus.ratis.RatisConsensus| SchemaRegion consensus protocol type. This parameter is unmodifiable after ConfigNode starts for the first time. These consensus protocols are currently supported: 1. org.apache.iotdb.consensus.ratis.RatisConsensus 2. org.apache.iotdb.consensus.simple.SimpleConsensus (The schema_replication_factor can only be set to 1).effectiveMode: first_start.Datatype: string|</span></span>
<span class="line"><span style="color:#98C379;">| data_replication_factor| 1| 1| Default number of data replicas.effectiveMode: first_start.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">| data_region_consensus_protocol_class| org.apache.iotdb.consensus.iot.IoTConsensus| org.apache.iotdb.consensus.iot.IoTConsensus| DataRegion consensus protocol type. This parameter is unmodifiable after ConfigNode starts for the first time. These consensus protocols are currently supported: 1. org.apache.iotdb.consensus.simple.SimpleConsensus (The data_replication_factor can only be set to 1) 2. org.apache.iotdb.consensus.iot.IoTConsensus 3. org.apache.iotdb.consensus.ratis.RatisConsensus 4. org.apache.iotdb.consensus.iot.IoTConsensusV2.effectiveMode: first_start.Datatype: string|</span></span>
<span class="line"><span style="color:#98C379;">| cn_metric_prometheus_reporter_port| 9091| 9091| The port of prometheus reporter of metric module.effectiveMode: restart.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">| dn_metric_prometheus_reporter_port| 9092| 9092| The port of prometheus reporter of metric module.effectiveMode: restart.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">| series_slot_num| 1000| 1000| All parameters in Partition configuration is unmodifiable after ConfigNode starts for the first time. And these parameters should be consistent within the ConfigNodeGroup. Number of SeriesPartitionSlots per Database.effectiveMode: first_start.Datatype: Integer|</span></span>
<span class="line"><span style="color:#98C379;">| series_partition_executor_class|org.apache.iotdb.commons.partition.executor.hash.BKDRHashExecutor|org.apache.iotdb.commons.partition.executor.hash.BKDRHashExecutor| SeriesPartitionSlot executor class These hashing algorithms are currently supported: 1. BKDRHashExecutor(Default) 2. APHashExecutor 3. JSHashExecutor 4. SDBMHashExecutor Also, if you want to implement your own SeriesPartition executor, you can inherit the SeriesPartitionExecutor class and modify this parameter to correspond to your Java class.effectiveMode: first_start.Datatype: String|</span></span>
<span class="line"><span style="color:#98C379;">| time_partition_origin| 0| 0| Time partition origin in milliseconds, default is equal to zero. This origin is set by default to the beginning of Unix time, which is January 1, 1970, at 00:00 UTC (Coordinated Universal Time). This point is known as the Unix epoch, and its timestamp is 0. If you want to specify a different time partition origin, you can set this value to a specific Unix timestamp in milliseconds.effectiveMode: first_start.Datatype: long|</span></span>
<span class="line"><span style="color:#98C379;">| time_partition_interval| 604800000| 604800000| Time partition interval in milliseconds, and partitioning data inside each data region, default is equal to one week.effectiveMode: first_start.Datatype: long|</span></span>
<span class="line"><span style="color:#98C379;">| disk_space_warning_threshold| 0.05| 0.05| Disk remaining threshold at which DataNode is set to ReadOnly status.effectiveMode: restart.Datatype: double(percentage)|</span></span>
<span class="line"><span style="color:#98C379;">| schema_engine_mode| Memory| Memory| The schema management mode of schema engine. Currently, support Memory and PBTree. This config of all DataNodes in one cluster must keep same.effectiveMode: first_start.Datatype: string|</span></span>
<span class="line"><span style="color:#98C379;">| tag_attribute_total_size| 700| 700| max size for a storage block for tags and attributes of one time series. If the combined size of tags and attributes exceeds the tag_attribute_total_size, a new storage block will be allocated to continue storing the excess data. the unit is byte.effectiveMode: first_start.Datatype: int|</span></span>
<span class="line"><span style="color:#98C379;">| read_consistency_level| strong| strong| The read consistency level These consistency levels are currently supported: 1. strong(Default, read from the leader replica) 2. weak(Read from a random replica).effectiveMode: restart.Datatype: string|</span></span>
<span class="line"><span style="color:#98C379;">| timestamp_precision| ms| ms| Use this value to set timestamp precision as &quot;ms&quot;, &quot;us&quot; or &quot;ns&quot;. Once the precision has been set, it can not be changed.effectiveMode: first_start.Datatype: String|</span></span>
<span class="line"><span style="color:#98C379;">+--------------------------------------+-----------------------------------------------------------------+-----------------------------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+</span></span>
<span class="line"><span style="color:#98C379;">Total line number = 28</span></span>
<span class="line"><span style="color:#98C379;">It costs 0.010s</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 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><h2 id="_2-状态设置" tabindex="-1"><a class="header-anchor" href="#_2-状态设置"><span>2. 状态设置</span></a></h2><h3 id="_2-1-设置连接的模型" tabindex="-1"><a class="header-anchor" href="#_2-1-设置连接的模型"><span>2.1 设置连接的模型</span></a></h3><p><strong>含义</strong>：将当前连接的 sql_dialect 置为树模型/表模型，在树模型和表模型中均可使用该命令。</p><h4 id="语法-12" tabindex="-1"><a class="header-anchor" href="#语法-12"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">SET</span><span style="color:#ABB2BF;"> SQL_DIALECT EQ (</span><span style="color:#C678DD;">TABLE</span><span style="color:#ABB2BF;"> | TREE)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="示例-12" tabindex="-1"><a class="header-anchor" href="#示例-12"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#C678DD;"> SET</span><span style="color:#ABB2BF;"> SQL_DIALECT</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">TABLE</span></span>
<span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> SHOW CURRENT_SQL_DIALECT</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><p>执行结果如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">|CurrentSqlDialect|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------+</span></span>
<span class="line"><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">TABLE</span><span style="color:#ABB2BF;">|</span></span>
<span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">-----------------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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="_2-2-更新配置项" tabindex="-1"><a class="header-anchor" href="#_2-2-更新配置项"><span>2.2 更新配置项</span></a></h3><p><strong>含义</strong>：用于更新配置项，执行完成后会进行配置项的热加载，对于支持热修改的配置项会立即生效。</p><h4 id="语法-13" tabindex="-1"><a class="header-anchor" href="#语法-13"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">setConfigurationStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">SET</span><span style="color:#C678DD;"> CONFIGURATION</span><span style="color:#ABB2BF;"> propertyAssignments (</span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> INTEGER_VALUE)?</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span>
<span class="line"></span>
<span class="line"><span style="color:#ABB2BF;">propertyAssignments</span></span>
<span class="line"><span style="color:#ABB2BF;"> : property (</span><span style="color:#98C379;">&#39;,&#39;</span><span style="color:#ABB2BF;"> property)*</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span>
<span class="line"><span style="color:#ABB2BF;"> </span></span>
<span class="line"><span style="color:#ABB2BF;">property</span></span>
<span class="line"><span style="color:#ABB2BF;"> : identifier EQ propertyValue</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span>
<span class="line"></span>
<span class="line"><span style="color:#ABB2BF;">propertyValue</span></span>
<span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">DEFAULT</span></span>
<span class="line"><span style="color:#ABB2BF;"> | expression</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p><strong>参数解释</strong>：</p><ol><li><strong>propertyAssignments</strong><ul><li><strong>含义</strong>：更新的配置列表，由多个 <code>property</code> 组成。</li><li>可以更新多个配置列表，用逗号分隔。</li><li><strong>取值</strong>： <ul><li><code>DEFAULT</code>：将配置项恢复为默认值。</li><li><code>expression</code>：具体的值，必须是一个字符串。</li></ul></li></ul></li><li><strong>ON INTEGER_VALUE</strong><ul><li><strong>含义</strong>：指定要更新配置的节点 ID。</li><li><strong>可选性</strong>：可选。如果不指定或指定的值低于 0，则更新所有 ConfigNode 和 DataNode 的配置。</li></ul></li></ol><h4 id="示例-13" tabindex="-1"><a class="header-anchor" href="#示例-13"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#C678DD;"> SET</span><span style="color:#C678DD;"> CONFIGURATION</span><span style="color:#ABB2BF;"> disk_space_warning_threshold</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">&#39;0.05&#39;</span><span style="color:#ABB2BF;">,heartbeat_interval_in_ms</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">&#39;1000&#39;</span><span style="color:#C678DD;"> ON</span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_2-3-读取手动修改的配置文件" tabindex="-1"><a class="header-anchor" href="#_2-3-读取手动修改的配置文件"><span>2.3 读取手动修改的配置文件</span></a></h3><p><strong>含义</strong>：用于读取手动修改过的配置文件，并对配置项进行热加载，对于支持热修改的配置项会立即生效。</p><h4 id="语法-14" tabindex="-1"><a class="header-anchor" href="#语法-14"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">loadConfigurationStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">LOAD</span><span style="color:#C678DD;"> CONFIGURATION</span><span style="color:#ABB2BF;"> localOrClusterMode?</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span>
<span class="line"><span style="color:#ABB2BF;"> </span></span>
<span class="line"><span style="color:#ABB2BF;">localOrClusterMode</span></span>
<span class="line"><span style="color:#ABB2BF;"> : (</span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">LOCAL</span><span style="color:#ABB2BF;"> | CLUSTER))</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>参数解释</strong>：</p><ol><li><strong>localOrClusterMode</strong><ul><li><strong>含义</strong>：指定配置热加载的范围。</li><li><strong>可选性</strong>：可选。默认值为 <code>CLUSTER</code>。</li><li><strong>取值</strong>： <ul><li><code>LOCAL</code>：只对客户端直连的 DataNode 进行配置热加载。</li><li><code>CLUSTER</code>：对集群中所有 DataNode 进行配置热加载。</li></ul></li></ul></li></ol><h4 id="示例-14" tabindex="-1"><a class="header-anchor" href="#示例-14"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#C678DD;"> LOAD</span><span style="color:#C678DD;"> CONFIGURATION</span><span style="color:#C678DD;"> ON</span><span style="color:#C678DD;"> LOCAL</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_2-4-设置系统的状态" tabindex="-1"><a class="header-anchor" href="#_2-4-设置系统的状态"><span>2.4 设置系统的状态</span></a></h3><p><strong>含义</strong>：用于设置系统的状态。</p><h4 id="语法-15" tabindex="-1"><a class="header-anchor" href="#语法-15"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">setSystemStatusStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">SET</span><span style="color:#C678DD;"> SYSTEM</span><span style="color:#C678DD;"> TO</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">READONLY</span><span style="color:#ABB2BF;"> | RUNNING) localOrClusterMode?</span></span>
<span class="line"><span style="color:#ABB2BF;"> ; </span></span>
<span class="line"><span style="color:#ABB2BF;"> </span></span>
<span class="line"><span style="color:#ABB2BF;">localOrClusterMode</span></span>
<span class="line"><span style="color:#ABB2BF;"> : (</span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">LOCAL</span><span style="color:#ABB2BF;"> | CLUSTER))</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>参数解释</strong>：</p><ol><li><strong>RUNNING | READONLY</strong><ul><li><strong>含义</strong>：指定系统的新状态。</li><li><strong>取值</strong>： <ul><li><code>RUNNING</code>：将系统设置为运行状态，允许读写操作。</li><li><code>READONLY</code>：将系统设置为只读状态，只允许读取操作，禁止写入操作。</li></ul></li></ul></li><li><strong>localOrClusterMode</strong><ul><li><strong>含义</strong>：指定状态变更的范围。</li><li><strong>可选性</strong>：可选。默认值为 <code>CLUSTER</code>。</li><li><strong>取值</strong>： <ul><li><code>LOCAL</code>：仅对客户端直连的 DataNode 生效。</li><li><code>CLUSTER</code>：对集群中所有 DataNode 生效。</li></ul></li></ul></li></ol><h4 id="示例-15" tabindex="-1"><a class="header-anchor" href="#示例-15"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#C678DD;"> SET</span><span style="color:#C678DD;"> SYSTEM</span><span style="color:#C678DD;"> TO</span><span style="color:#C678DD;"> READONLY</span><span style="color:#C678DD;"> ON</span><span style="color:#ABB2BF;"> CLUSTER;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="_3-数据管理" tabindex="-1"><a class="header-anchor" href="#_3-数据管理"><span>3. 数据管理</span></a></h2><h3 id="_3-1-刷写内存表中的数据到磁盘" tabindex="-1"><a class="header-anchor" href="#_3-1-刷写内存表中的数据到磁盘"><span>3.1 刷写内存表中的数据到磁盘</span></a></h3><p><strong>含义</strong>：将内存表中的数据刷写到磁盘上。</p><h4 id="语法-16" tabindex="-1"><a class="header-anchor" href="#语法-16"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">flushStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : FLUSH identifier? (</span><span style="color:#98C379;">&#39;,&#39;</span><span style="color:#ABB2BF;"> identifier)* booleanValue? localOrClusterMode?</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span>
<span class="line"></span>
<span class="line"><span style="color:#ABB2BF;">booleanValue</span></span>
<span class="line"><span style="color:#ABB2BF;"> : TRUE | FALSE</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span>
<span class="line"></span>
<span class="line"><span style="color:#ABB2BF;">localOrClusterMode</span></span>
<span class="line"><span style="color:#ABB2BF;"> : (</span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">LOCAL</span><span style="color:#ABB2BF;"> | CLUSTER))</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><p><strong>参数解释</strong>：</p><ol><li><strong>identifier</strong><ul><li><strong>含义</strong>：指定要刷写的数据库名称。</li><li><strong>可选性</strong>：可选。如果不指定，则默认刷写所有数据库。</li><li><strong>多个数据库</strong>：可以指定多个数据库名称，用逗号分隔。例如：<code>FLUSH test_db1, test_db2</code>。</li></ul></li><li><strong>booleanValue</strong><ul><li><strong>含义</strong>：指定刷写的内容。</li><li><strong>可选性</strong>：可选。如果不指定，则默认刷写顺序和乱序空间的内存。</li><li><strong>取值</strong>： <ul><li><code>TRUE</code>：只刷写顺序空间的内存表。</li><li><code>FALSE</code>：只刷写乱序空间的MemTable。</li></ul></li></ul></li><li><strong>localOrClusterMode</strong><ul><li><strong>含义</strong>：指定刷写的范围。</li><li><strong>可选性</strong>：可选。默认值为 <code>CLUSTER</code>。</li><li><strong>取值</strong>： <ul><li><code>ON LOCAL</code>：只刷写客户端直连的 DataNode 上的内存表。</li><li><code>ON CLUSTER</code>：刷写集群中所有 DataNode 上的内存表。</li></ul></li></ul></li></ol><h4 id="示例-16" tabindex="-1"><a class="header-anchor" href="#示例-16"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#ABB2BF;"> FLUSH test_db TRUE </span><span style="color:#C678DD;">ON</span><span style="color:#C678DD;"> LOCAL</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="_4-数据修复" tabindex="-1"><a class="header-anchor" href="#_4-数据修复"><span>4. 数据修复</span></a></h2><h3 id="_4-1-启动后台扫描并修复-tsfile-任务" tabindex="-1"><a class="header-anchor" href="#_4-1-启动后台扫描并修复-tsfile-任务"><span>4.1 启动后台扫描并修复 tsfile 任务</span></a></h3><p><strong>含义</strong>：启动一个后台任务，开始扫描并修复 tsfile，能够修复数据文件内的时间戳乱序类异常。</p><h4 id="语法-17" tabindex="-1"><a class="header-anchor" href="#语法-17"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">startRepairDataStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">START</span><span style="color:#ABB2BF;"> REPAIR </span><span style="color:#C678DD;">DATA</span><span style="color:#ABB2BF;"> localOrClusterMode?</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span>
<span class="line"><span style="color:#ABB2BF;"> </span></span>
<span class="line"><span style="color:#ABB2BF;">localOrClusterMode</span></span>
<span class="line"><span style="color:#ABB2BF;"> : (</span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">LOCAL</span><span style="color:#ABB2BF;"> | CLUSTER))</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>参数解释</strong>：</p><ol><li><strong>localOrClusterMode</strong><ul><li><strong>含义</strong>：指定数据修复的范围。</li><li><strong>可选性</strong>：可选。默认值为 <code>CLUSTER</code>。</li><li><strong>取值</strong>： <ul><li><code>ON LOCAL</code>：仅对客户端直连的 DataNode 执行。</li><li><code>ON CLUSTER</code>：对集群中所有 DataNode 执行。</li></ul></li></ul></li></ol><h4 id="示例-17" tabindex="-1"><a class="header-anchor" href="#示例-17"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#C678DD;"> START</span><span style="color:#ABB2BF;"> REPAIR </span><span style="color:#C678DD;">DATA</span><span style="color:#C678DD;"> ON</span><span style="color:#ABB2BF;"> CLUSTER;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_4-2-暂停后台修复-tsfile-任务" tabindex="-1"><a class="header-anchor" href="#_4-2-暂停后台修复-tsfile-任务"><span>4.2 暂停后台修复 tsfile 任务</span></a></h3><p><strong>含义</strong>：暂停后台的修复任务，暂停中的任务可通过再次执行 start repair data 命令恢复。</p><h4 id="语法-18" tabindex="-1"><a class="header-anchor" href="#语法-18"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">stopRepairDataStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">STOP</span><span style="color:#ABB2BF;"> REPAIR </span><span style="color:#C678DD;">DATA</span><span style="color:#ABB2BF;"> localOrClusterMode?</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span>
<span class="line"><span style="color:#ABB2BF;"> </span></span>
<span class="line"><span style="color:#ABB2BF;">localOrClusterMode</span></span>
<span class="line"><span style="color:#ABB2BF;"> : (</span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">LOCAL</span><span style="color:#ABB2BF;"> | CLUSTER))</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>参数解释</strong>：</p><ol><li><strong>localOrClusterMode</strong><ul><li><strong>含义</strong>：指定数据修复的范围。</li><li><strong>可选性</strong>：可选。默认值为 <code>CLUSTER</code>。</li><li><strong>取值</strong>： <ul><li><code>ON LOCAL</code>：仅对客户端直连的 DataNode 执行。</li><li><code>ON CLUSTER</code>：对集群中所有 DataNode 执行。</li></ul></li></ul></li></ol><h4 id="示例-18" tabindex="-1"><a class="header-anchor" href="#示例-18"><span>示例：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#C678DD;"> STOP</span><span style="color:#ABB2BF;"> REPAIR </span><span style="color:#C678DD;">DATA</span><span style="color:#C678DD;"> ON</span><span style="color:#ABB2BF;"> CLUSTER;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="_5-终止查询" tabindex="-1"><a class="header-anchor" href="#_5-终止查询"><span>5. 终止查询</span></a></h2><h3 id="_5-1-主动终止查询" tabindex="-1"><a class="header-anchor" href="#_5-1-主动终止查询"><span>5.1 主动终止查询</span></a></h3><p><strong>含义</strong>：使用该命令主动地终止查询。</p><h4 id="语法-19" tabindex="-1"><a class="header-anchor" href="#语法-19"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">killQueryStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">KILL</span><span style="color:#ABB2BF;"> (QUERY queryId</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">string | ALL QUERIES)</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p><strong>参数解释</strong>：</p><ol><li><strong>QUERY queryId=string</strong><ul><li><strong>含义</strong>：指定要终止的查询的 ID。 <code>&lt;queryId&gt;</code> 是正在执行的查询的唯一标识符。</li><li><strong>获取查询 ID</strong>：可以通过 <code>SHOW QUERIES</code> 命令获取所有正在执行的查询及其 ID。</li></ul></li><li><strong>ALL QUERIES</strong><ul><li><strong>含义</strong>：终止所有正在执行的查询。</li></ul></li></ol><h4 id="示例-19" tabindex="-1"><a class="header-anchor" href="#示例-19"><span>示例：</span></a></h4><p>通过指定 <code>queryId</code> 可以中止指定的查询，为了获取正在执行的查询 id，用户可以使用 show queries 命令，该命令将显示所有正在执行的查询列表。</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#C678DD;"> KILL</span><span style="color:#ABB2BF;"> QUERY 20250108_101015_00000_1; </span><span style="color:#7F848E;font-style:italic;">-- 终止指定query</span></span>
<span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">&gt;</span><span style="color:#C678DD;"> KILL</span><span style="color:#ABB2BF;"> ALL QUERIES; </span><span style="color:#7F848E;font-style:italic;">-- 终止所有query</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="_6-调试查询" tabindex="-1"><a class="header-anchor" href="#_6-调试查询"><span>6. 调试查询</span></a></h2><h3 id="_6-1-debug-sql" tabindex="-1"><a class="header-anchor" href="#_6-1-debug-sql"><span>6.1 DEBUG SQL</span></a></h3><p><strong>​含义：​</strong>在 SQL 查询语句开头添加 debug 关键字，执行时将输出 debug 日志，包括涉及到的底层文件 scan 信息。</p><blockquote><p>V2.0.9-beta 起支持该功能</p></blockquote><h4 id="语法-20" tabindex="-1"><a class="header-anchor" href="#语法-20"><span>语法：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">debugSQLStatement</span></span>
<span class="line"><span style="color:#ABB2BF;"> : DEBUG ? query</span></span>
<span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p><strong>说明：</strong></p><ul><li>日志输出目录为： <code>logs/log_datanode_query_debug.log</code></li></ul><h4 id="示例-20" tabindex="-1"><a class="header-anchor" href="#示例-20"><span>示例：</span></a></h4><ol><li>执行以下 SQL 进行 DEBUG 查询</li></ol><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">debug </span><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#ABB2BF;"> table3;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ol start="2"><li>观察<code>log_datanode_query_debug.log</code> 的日志内容，查看查询涉及到的文件 scan 信息。</li></ol><div class="language-bash line-numbers-mode" data-highlighter="shiki" data-ext="bash" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-bash"><span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,515</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.d.t.TsFileResource:1098 - Path: table3.d1 file /home/iotdb/timechodb/data/datanode/data/sequence/database1/4/2864/1769139940009-1-0-0.tsfile is not satisfied because of no device! </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,515</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.d.t.TsFileResource:1098 - Path: table3.d1 file /home/iotdb/timechodb/data/datanode/data/sequence/database1/4/2865/1769139940010-1-0-0.tsfile is not satisfied because of no device! </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,516</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.b.TimeSeriesMetadataCache:159 - Cache miss: table3.d1. in file: /home/iotdb/timechodb/data/datanode/data/sequence/database1/4/2888/1774247880109-1-0-0.tsfile </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,516</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.b.TimeSeriesMetadataCache:160 - Device: table3.d1, all sensors: [, temperature] </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,517</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.b.BloomFilterCache:110 - get bloomFilter from cache where filePath is: /home/iotdb/timechodb/data/datanode/data/sequence/database1/4/2888/1774247880109-1-0-0.tsfile </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,517</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.b.TimeSeriesMetadataCache:227 - Get timeseries: table3.d1. metadata in file: /home/iotdb/timechodb/data/datanode/data/sequence/database1/4/2888/1774247880109-1-0-0.tsfile from cache: TimeseriesMetadata{</span><span style="color:#E06C75;">timeSeriesMetadataType</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">-128,</span><span style="color:#E06C75;"> chunkMetaDataListDataSize</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">8,</span><span style="color:#E06C75;"> measurementId</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">&#39;&#39;,</span><span style="color:#E06C75;"> dataType</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">VECTOR,</span><span style="color:#E06C75;"> statistics</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">startTime:</span><span style="color:#61AFEF;"> 1747065600001</span><span style="color:#98C379;"> endTime:</span><span style="color:#D19A66;"> 1747065601002</span><span style="color:#98C379;"> count:</span><span style="color:#98C379;"> 2,</span><span style="color:#98C379;"> modified=</span><span style="color:#D19A66;">false</span><span style="color:#98C379;">,</span><span style="color:#98C379;"> isSeq=</span><span style="color:#D19A66;">true</span><span style="color:#98C379;">,</span><span style="color:#98C379;"> chunkMetadataList=[measurementId:</span><span style="color:#98C379;"> ,</span><span style="color:#98C379;"> datatype:</span><span style="color:#98C379;"> VECTOR,</span><span style="color:#98C379;"> version:</span><span style="color:#98C379;"> 0,</span><span style="color:#98C379;"> Statistics:</span><span style="color:#98C379;"> startTime:</span><span style="color:#D19A66;"> 1747065600001</span><span style="color:#98C379;"> endTime:</span><span style="color:#D19A66;"> 1747065601002</span><span style="color:#98C379;"> count:</span><span style="color:#98C379;"> 2,</span><span style="color:#98C379;"> deleteIntervalList:</span><span style="color:#98C379;"> null]}.</span><span style="color:#ABB2BF;"> </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,517</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.b.TimeSeriesMetadataCache:227 - Get timeseries: table3.d1.temperature metadata in file: /home/iotdb/timechodb/data/datanode/data/sequence/database1/4/2888/1774247880109-1-0-0.tsfile from cache: TimeseriesMetadata{</span><span style="color:#E06C75;">timeSeriesMetadataType</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">64,</span><span style="color:#E06C75;"> chunkMetaDataListDataSize</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">8,</span><span style="color:#E06C75;"> measurementId</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">&#39;temperature&#39;,</span><span style="color:#E06C75;"> dataType</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">FLOAT,</span><span style="color:#E06C75;"> statistics</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">startTime:</span><span style="color:#61AFEF;"> 1747065600001</span><span style="color:#98C379;"> endTime:</span><span style="color:#D19A66;"> 1747065601002</span><span style="color:#98C379;"> count:</span><span style="color:#D19A66;"> 2</span><span style="color:#ABB2BF;"> [minValue:85.0,maxValue:90.0,firstValue:90.0,lastValue:85.0,sumValue:175.0], </span><span style="color:#E06C75;">modified</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">false,</span><span style="color:#E06C75;"> isSeq</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">true,</span><span style="color:#E06C75;"> chunkMetadataList</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">[measurementId:</span><span style="color:#61AFEF;"> temperature,</span><span style="color:#98C379;"> datatype:</span><span style="color:#98C379;"> FLOAT,</span><span style="color:#98C379;"> version:</span><span style="color:#98C379;"> 0,</span><span style="color:#98C379;"> Statistics:</span><span style="color:#98C379;"> startTime:</span><span style="color:#D19A66;"> 1747065600001</span><span style="color:#98C379;"> endTime:</span><span style="color:#D19A66;"> 1747065601002</span><span style="color:#98C379;"> count:</span><span style="color:#D19A66;"> 2</span><span style="color:#ABB2BF;"> [minValue:85.0,maxValue:90.0,firstValue:90.0,lastValue:85.0,sumValue:175.0], deleteIntervalList: null]}. </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,517</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.d.r.r.c.m.DiskAlignedChunkMetadataLoader:110 - Modifications size is 1 </span><span style="color:#C678DD;">for</span><span style="color:#ABB2BF;"> file Path: /home/iotdb/timechodb/data/datanode/data/sequence/database1/4/2888/1774247880109-1-0-0.tsfile </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,518</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.d.r.r.c.m.DiskAlignedChunkMetadataLoader:114 - [] </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,518</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.d.r.r.c.m.DiskAlignedChunkMetadataLoader:125 - After modification Chunk meta data list is: </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,518</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.d.r.r.c.m.DiskAlignedChunkMetadataLoader:126 - org.apache.tsfile.file.metadata.TableDeviceChunkMetadata@2e11291f </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,518</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.b.ChunkCache:167 - get chunk from cache whose key is: ChunkCacheKey{</span><span style="color:#E06C75;">filePath</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">&#39;/home/iotdb/timechodb/data/datanode/data/sequence/database1/4/2888/1774247880109-1-0-0.tsfile&#39;,</span><span style="color:#E06C75;"> regionId</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">4,</span><span style="color:#E06C75;"> timePartitionId</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">2888,</span><span style="color:#E06C75;"> tsFileVersion</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">1,</span><span style="color:#E06C75;"> compactionVersion</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">0,</span><span style="color:#E06C75;"> offsetOfChunkHeader</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">19</span><span style="color:#ABB2BF;">} </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,518</span><span style="color:#ABB2BF;"> [Query-Worker-Thread-0$20260324_021041_00068_1.1.0.0] INFO o.a.i.d.s.b.ChunkCache:167 - get chunk from cache whose key is: ChunkCacheKey{</span><span style="color:#E06C75;">filePath</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">&#39;/home/iotdb/timechodb/data/datanode/data/sequence/database1/4/2888/1774247880109-1-0-0.tsfile&#39;,</span><span style="color:#E06C75;"> regionId</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">4,</span><span style="color:#E06C75;"> timePartitionId</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">2888,</span><span style="color:#E06C75;"> tsFileVersion</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">1,</span><span style="color:#E06C75;"> compactionVersion</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">0,</span><span style="color:#E06C75;"> offsetOfChunkHeader</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">46</span><span style="color:#ABB2BF;">} </span></span>
<span class="line"><span style="color:#61AFEF;">2026-03-24</span><span style="color:#98C379;"> 10:10:41,519</span><span style="color:#ABB2BF;"> [pool-69-IoTDB-ClientRPC-Processor-1$20260324_021041_00068_1] INFO o.a.i.d.q.p.Coordinator:902 - debug </span><span style="color:#C678DD;">select</span><span style="color:#E06C75;"> *</span><span style="color:#ABB2BF;"> from table3</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 class="line-number"></div><div class="line-number"></div></div></div></div><!----><!----><!----></div><footer class="vp-page-meta"><div class="vp-meta-item edit-link"><a class="auto-link external-link vp-meta-label" href="https://github.com/apache/iotdb-docs/edit/main/src/zh/UserGuide/latest-Table/User-Manual/Maintenance-statement_apache.md" aria-label="发现错误？在 GitHub 上编辑此页" rel="noopener noreferrer" target="_blank"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon" name="edit"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->发现错误？在 GitHub 上编辑此页<!----></a></div><div class="vp-meta-item git-info"><div class="update-time"><span class="vp-meta-label">最近更新: </span><time class="vp-meta-info" datetime="2026-04-22T04:08:21.000Z" data-allow-mismatch>2026/4/22 04:08</time></div><!----></div></footer><nav class="vp-page-nav"><a class="route-link auto-link prev" href="/zh/UserGuide/latest-Table/User-Manual/Load-Balance.html" aria-label="集群维护"><div class="hint"><span class="arrow start"></span>上一页</div><div class="link"><!---->集群维护</div></a><a class="route-link auto-link next" href="/zh/UserGuide/latest-Table/User-Manual/Auto-Start-On-Boot_apache.html" aria-label="开机自启"><div class="hint">下一页<span class="arrow end"></span></div><div class="link">开机自启<!----></div></a></nav><!----><!----><!--]--></main><!--]--><footer class="site-footer"><span id="doc-version" style="display:none;">latest-Table</span><p class="copyright-text">版权所有 © 2026 Apache软件基金会。
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