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version.</div><div class="margin-top--md">For up-to-date documentation, see the <b><a href="/zh-CN/docs/data_node/extract_node/mongodb-cdc">latest version</a></b> (<!-- -->1.11.0<!-- -->).</div></div><div class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="页面路径"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="主页面" class="breadcrumbs__link" href="/zh-CN/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">数据节点</span><meta itemprop="position" content="1"></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Extract Nodes</span><meta itemprop="position" content="2"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">MongoDB-CDC</span><meta itemprop="position" content="3"></li></ul></nav><span class="theme-doc-version-badge badge badge--secondary">版本：Next</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>MongoDB-CDC</h1></header><h2 class="anchor anchorWithStickyNavbar_LWe7" id="概述">概述<a href="#概述" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h2><p>MongoDB CDC 连接器允许从 MongoDB 读取快照数据和增量数据。本文档介绍如何设置 MongoDB CDC 连接器以对 MongoDB 运行 SQL 查询。</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="支持的版本">支持的版本<a href="#支持的版本" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h2><table><thead><tr><th>Extract 节点</th><th>版本</th></tr></thead><tbody><tr><td><a href="/zh-CN/docs/next/data_node/extract_node/mongodb-cdc">MongoDB-CDC</a></td><td><a href="https://www.mongodb.com/" target="_blank" rel="noopener noreferrer">MongoDB</a>: <!-- -->&gt;<!-- -->= 3.6</td></tr></tbody></table><h2 class="anchor anchorWithStickyNavbar_LWe7" id="依赖项">依赖项<a href="#依赖项" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h2><p>I.为了设置 MongoDB CDC 连接器，下表提供了使用构建自动化工具（例如 Maven 或 SBT）的依赖关系信息</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="maven依赖">Maven依赖<a href="#maven依赖" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h3><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">&lt;dependency&gt;</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &lt;groupId&gt;org.apache.inlong&lt;/groupId&gt;</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &lt;artifactId&gt;sort-connector-mongodb-cdc&lt;/artifactId&gt;</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &lt;version&gt;1.12.0-SNAPSHOT&lt;/version&gt;</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">&lt;/dependency&gt;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="设置-mongodb">设置 MongoDB<a href="#设置-mongodb" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="可用性">可用性<a href="#可用性" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h3><ul><li><p>MongoDB 版本</p><p>MongoDB 版本 <!-- -->&gt;<!-- -->= 3.6
我们使用 <a href="https://docs.mongodb.com/manual/changeStreams/" target="_blank" rel="noopener noreferrer">更改流</a>功能（3.6 版中的新功能）来捕获更改数据。</p></li><li><p>集群部署</p><p>需要 <a href="https://docs.mongodb.com/manual/replication/" target="_blank" rel="noopener noreferrer">副本集</a>或 <a href="https://docs.mongodb.com/manual/sharding/" target="_blank" rel="noopener noreferrer">分片集群</a>。</p></li><li><p>存储引擎</p><p>需要 <a href="https://docs.mongodb.com/manual/core/wiredtiger/#std-label-storage-wiredtiger" target="_blank" rel="noopener noreferrer">WiredTiger</a>存储引擎。</p></li><li><p><a href="https://docs.mongodb.com/manual/reference/replica-configuration/#mongodb-rsconf-rsconf.protocolVersion" target="_blank" rel="noopener noreferrer">副本集协议版本</a></p><p>需要副本集协议版本 1 <a href="https://docs.mongodb.com/manual/reference/replica-configuration/#mongodb-rsconf-rsconf.protocolVersion" target="_blank" rel="noopener noreferrer">(pv1)</a>。
从版本 4.0 开始，MongoDB 仅支持 pv1。pv1 是使用 MongoDB 3.2 或更高版本创建的所有新副本集的默认值。</p></li><li><p>特权</p><p><code>changeStream</code> MongoDB Kafka 连接器 <code>read</code> 需要权限。</p><p>您可以使用以下示例进行简单授权。
更详细的授权请参考 <a href="https://docs.mongodb.com/manual/reference/built-in-roles/#database-user-roles" target="_blank" rel="noopener noreferrer">MongoDB 数据库用户角色</a>。</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">use admin</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">db.createUser</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token punctuation" style="color:rgb(248, 248, 242)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> user: </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;flinkuser&quot;</span><span class="token plain">,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> pwd: </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;flinkpw&quot;</span><span class="token plain">,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> roles: </span><span class="token punctuation" style="color:rgb(248, 248, 242)">[</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">{</span><span class="token plain"> role: </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;read&quot;</span><span class="token plain">, db: </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;admin&quot;</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">}</span><span class="token plain">, // </span><span class="token builtin class-name" style="color:rgb(189, 147, 249)">read</span><span class="token plain"> role includes changeStream privilege </span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">{</span><span class="token plain"> role: </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;readAnyDatabase&quot;</span><span class="token plain">, db: </span><span class="token string" style="color:rgb(255, 121, 198)">&quot;admin&quot;</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">}</span><span class="token plain"> // </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">for</span><span class="token plain"> snapshot reading</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">]</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">}</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="如何创建-mongodb-extract-节点">如何创建 MongoDB Extract 节点<a href="#如何创建-mongodb-extract-节点" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sql-api-用法">SQL API 用法<a href="#sql-api-用法" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h3><p>这个例子展示了如何使用 <code>Flink SQL</code> 创建一个 MongoDB Extract 节点:</p><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token comment" style="color:rgb(98, 114, 164)">-- Set checkpoint every 3000 milliseconds </span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Flink </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">SQL</span><span class="token operator">&gt;</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">SET</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;execution.checkpointing.interval&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;3s&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</span><span class="token plain"> </span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)">-- Create a MySQL table &#x27;mongodb_extract_node&#x27; in Flink SQL</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Flink </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">SQL</span><span class="token operator">&gt;</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">CREATE</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">TABLE</span><span class="token plain"> mongodb_extract_node </span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> _id STRING</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(98, 114, 164)">// must be declared</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> name STRING</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> weight </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">DECIMAL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token number">10</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token number">3</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> tags ARRAY</span><span class="token operator">&lt;</span><span class="token plain">STRING</span><span class="token operator">&gt;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(98, 114, 164)">-- array</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> price </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">ROW</span><span class="token operator">&lt;</span><span class="token plain">amount </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">DECIMAL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token number">10</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token number">2</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> currency STRING</span><span class="token operator">&gt;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(98, 114, 164)">-- embedded document</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> suppliers ARRAY</span><span class="token operator">&lt;</span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">ROW</span><span class="token operator">&lt;</span><span class="token plain">name STRING</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> address STRING</span><span class="token operator">&gt;&gt;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(98, 114, 164)">-- embedded documents</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">PRIMARY</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">KEY</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain">_id</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"> </span><span class="token operator">NOT</span><span class="token plain"> ENFORCED</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">WITH</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;connector&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;mongodb-cdc-inlong&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;hosts&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;localhost:27017,localhost:27018,localhost:27019&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;username&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;flinkuser&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;password&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;flinkpw&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;database&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;inventory&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;collection&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;mongodb_extract_node&#x27;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)">-- Read snapshot and binlogs from mongodb_extract_node</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Flink </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">SQL</span><span class="token operator">&gt;</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">SELECT</span><span class="token plain"> </span><span class="token operator">*</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">FROM</span><span class="token plain"> mongodb_extract_node</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p><strong>注意</strong></p><p>MongoDB 的更改事件记录在消息之前没有更新。所以，我们只能将其转换为 Flink 的 UPSERT 变更日志流。UPSERT 流需要唯一键，因此我们必须声明 <code>_id</code> 为主键。我们不能将其他列声明为主键，因为删除操作不包含除 <code>_id</code> 和 <code>sharding key</code> 之外的键和值。</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="inlong-dashboard-用法">InLong Dashboard 用法<a href="#inlong-dashboard-用法" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h3><p>TODO: 未来会支持</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="inlong-manager-用法">InLong Manager 用法<a href="#inlong-manager-用法" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h3><p>TODO: 未来会支持</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="mongodb-extract-节点参数">MongoDB Extract 节点参数<a href="#mongodb-extract-节点参数" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h2><table><thead><tr><th><strong>选项</strong></th><th><strong>是否必须</strong></th><th><strong>默认</strong></th><th><strong>类型</strong></th><th><strong>描述</strong></th></tr></thead><tbody><tr><td>connector</td><td>必须</td><td>(none)</td><td>String</td><td>指定要使用的连接器，这里应该是<code>mongodb-cdc-inlong</code>.</td></tr><tr><td>hosts</td><td>必须</td><td>(none)</td><td>String</td><td>MongoDB 服务器的主机名和端口对的逗号分隔列表。例如。<code>localhost:27017,localhost:27018</code></td></tr><tr><td>username</td><td>可选</td><td>(none)</td><td>String</td><td>连接到 MongoDB 时要使用的数据库用户的名称。仅当 MongoDB 配置为使用身份验证时才需要这样做。</td></tr><tr><td>password</td><td>可选</td><td>(none)</td><td>String</td><td>连接 MongoDB 时使用的密码。仅当 MongoDB 配置为使用身份验证时才需要这样做。</td></tr><tr><td>database</td><td>必须</td><td>(none)</td><td>String</td><td>要监视更改的数据库的名称。</td></tr><tr><td>collection</td><td>必须</td><td>(none)</td><td>String</td><td>数据库中要监视更改的集合的名称。</td></tr><tr><td>connection.options</td><td>可选</td><td>(none)</td><td>String</td><td>MongoDB的 &amp; 分隔<a href="https://docs.mongodb.com/manual/reference/connection-string/#std-label-connections-connection-options" target="_blank" rel="noopener noreferrer">连接选项</a>。例如。<code>replicaSet=test&amp;connectTimeoutMS=300000</code></td></tr><tr><td>copy.existing</td><td>可选</td><td>true</td><td>Boolean</td><td>是否从源集合中复制现有数据。</td></tr><tr><td>copy.existing.queue.size</td><td>可选</td><td>10240</td><td>Integer</td><td>执行数据复制时使用的线程数。</td></tr><tr><td>batch.size</td><td>可选</td><td>1024</td><td>Integer</td><td>Cursor 批次大小。</td></tr><tr><td>poll.max.batch.size</td><td>可选</td><td>1024</td><td>Integer</td><td>轮询新数据时，单个批次中包含的最大更改流文档数。</td></tr><tr><td>poll.await.time.ms</td><td>可选</td><td>1000</td><td>Integer</td><td>在更改流上检查新结果之前等待的时间量。</td></tr><tr><td>heartbeat.interval.ms</td><td>可选</td><td>0</td><td>Integer</td><td>发送心跳消息之间的时间长度（以毫秒为单位）。使用 0 禁用。</td></tr><tr><td>inlong.metric.labels</td><td>可选</td><td>(none)</td><td>String</td><td>inlong metric 的标签值，该值的构成为groupId=<code>{groupId}</code>&amp;streamId=<code>{streamId}</code>&amp;nodeId=<code>{nodeId}</code>。</td></tr><tr><td>scan.incremental.snapshot.enabled</td><td>可选</td><td>false</td><td>Boolean</td><td>是否启用增量快照。增量快照功能仅支持 MongoDB 4.0之后的版本。</td></tr><tr><td>scan.incremental.snapshot.chunk.size.mb</td><td>可选</td><td>64</td><td>Integer</td><td>增量快照的块大小，单位： mb。</td></tr><tr><td>chunk-meta.group.size</td><td>可选</td><td>1000</td><td>Integer</td><td>chunk meta 的组大小，如果 meta 大小超过组大小，则 meta 将被分成多个组。</td></tr></tbody></table><h2 class="anchor anchorWithStickyNavbar_LWe7" id="可用元数据">可用元数据<a href="#可用元数据" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h2><p>以下格式元数据可以作为表定义中的只读 (VIRTUAL) 列公开。</p><table><thead><tr><th>Key</th><th>数据类型</th><th>描述</th></tr></thead><tbody><tr><td>database_name</td><td>STRING NOT NULL</td><td>包含该行的数据库的名称。</td></tr><tr><td>collection_name</td><td>STRING NOT NULL</td><td>包含该行的集合的名称。</td></tr><tr><td>op_ts</td><td>TIMESTAMP_LTZ(3) NOT NULL</td><td>它指示在数据库中进行更改的时间。如果记录是从表的快照而不是更改流中读取的，则该值始终为 0。</td></tr></tbody></table><p>扩展的 CREATE TABLE 示例演示了公开这些元数据字段的语法：</p><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">CREATE</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">TABLE</span><span class="token plain"> </span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token identifier">mysql_extract_node</span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> db_name STRING METADATA </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">FROM</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;database_name&#x27;</span><span class="token plain"> VIRTUAL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> collection_name STRING METADATA </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">FROM</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;collection_name&#x27;</span><span class="token plain"> VIRTUAL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> operation_ts TIMESTAMP_LTZ</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token number">3</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"> METADATA </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">FROM</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;op_ts&#x27;</span><span class="token plain"> VIRTUAL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> _id STRING</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(98, 114, 164)">// must be declared</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> name STRING</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> weight </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">DECIMAL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token number">10</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token number">3</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> tags ARRAY</span><span class="token operator">&lt;</span><span class="token plain">STRING</span><span class="token operator">&gt;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(98, 114, 164)">-- array</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> price </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">ROW</span><span class="token operator">&lt;</span><span class="token plain">amount </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">DECIMAL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token number">10</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token number">2</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> currency STRING</span><span class="token operator">&gt;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(98, 114, 164)">-- embedded document</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> suppliers ARRAY</span><span class="token operator">&lt;</span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">ROW</span><span class="token operator">&lt;</span><span class="token plain">name STRING</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> address STRING</span><span class="token operator">&gt;&gt;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> </span><span class="token comment" style="color:rgb(98, 114, 164)">-- embedded documents</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">PRIMARY</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">KEY</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain">_id</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"> </span><span class="token operator">NOT</span><span class="token plain"> ENFORCED</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">WITH</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;connector&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;mongodb-cdc-inlong&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"> </span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;hostname&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;YourHostname&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;username&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;YourUsername&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;password&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;YourPassword&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;database&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;YourDatabase&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;collection&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;YourTable&#x27;</span><span class="token plain"> </span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="数据类型映射">数据类型映射<a href="#数据类型映射" class="hash-link" aria-label="Direct link to heading" title="Direct link to heading">​</a></h2><table><thead><tr><th>BSON 类型</th><th>Flink SQL 类型</th></tr></thead><tbody><tr><td></td><td>TINYINT</td></tr><tr><td></td><td>SMALLINT</td></tr><tr><td>Int</td><td>INT</td></tr><tr><td>Long</td><td>BIGINT</td></tr><tr><td></td><td>FLOAT</td></tr><tr><td>Double</td><td>DOUBLE</td></tr><tr><td>Decimal128</td><td>DECIMAL(p, s)</td></tr><tr><td>Boolean</td><td>BOOLEAN</td></tr><tr><td>Date Timestamp</td><td>DATE</td></tr><tr><td>Date Timestamp</td><td>TIME</td></tr><tr><td>Date</td><td>TIMESTAMP(3) TIMESTAMP_LTZ(3)</td></tr><tr><td>Timestamp</td><td>TIMESTAMP(0) TIMESTAMP_LTZ(0)</td></tr><tr><td>String ObjectId UUID Symbol MD5 JavaScript Regex</td><td>STRING</td></tr><tr><td>BinData</td><td>BYTES</td></tr><tr><td>Object</td><td>ROW</td></tr><tr><td>Array</td><td>ARRAY</td></tr><tr><td>DBPointer</td><td>ROW\&lt;\$ref STRING, \$id STRING<!-- -->&gt;</td></tr><tr><td><a href="https://docs.mongodb.com/manual/reference/geojson/" target="_blank" rel="noopener noreferrer">GeoJSON</a></td><td>Point : ROW\&lt;type STRING, coordinates ARRAY\&lt;DOUBLE<!-- -->&gt;<!-- -->&gt;<!-- --> Line : ROW\&lt;type STRING, coordinates ARRAY\&lt;ARRAY\&lt; DOUBLE<!-- -->&gt;<!-- -->&gt;<!-- -->&gt;<!-- --> ...</td></tr></tbody></table></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/apache/inlong-website/edit/master/docs/data_node/extract_node/mongodb-cdc.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_vwxv"></div></div></footer></article><nav class="pagination-nav 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