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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">Administration</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Geo-replication</span><meta itemprop="position" content="2"></li></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: 3.2.x</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>Pulsar geo-replication</h1></header><h2 class="anchor anchorWithStickyNavbar_LWe7" id="enable-geo-replication-for-a-namespace">Enable geo-replication for a namespace<a href="#enable-geo-replication-for-a-namespace" class="hash-link" aria-label="Direct link to Enable geo-replication for a namespace" title="Direct link to Enable geo-replication for a namespace"></a></h2><p>You must enable geo-replication on a <a href="#concepts-multi-tenancy">per-tenant basis</a> in Pulsar. For example, you can enable geo-replication between two specific clusters only when a tenant has access to both clusters.</p><p>Geo-replication is managed at the namespace level, which means you only need to create and configure a namespace to replicate messages between two or more provisioned clusters that a tenant can access.</p><p>Complete the following tasks to enable geo-replication for a namespace:</p><ul><li><a href="#enable-geo-replication-at-namespace-level">Enable a geo-replication namespace</a></li><li><a href="/docs/3.2.x/admin-api-namespaces/#configure-replication-clusters">Configure that namespace to replicate across two or more provisioned clusters</a></li></ul><p>Any message published on <em>any</em> topic in that namespace is replicated to all clusters in the specified set.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="local-persistence-and-forwarding">Local persistence and forwarding<a href="#local-persistence-and-forwarding" class="hash-link" aria-label="Direct link to Local persistence and forwarding" title="Direct link to Local persistence and forwarding"></a></h2><p>When messages are produced on a Pulsar topic, messages are first persisted in the local cluster, and then forwarded asynchronously to the remote clusters.</p><p>In normal cases, when connectivity issues are none, messages are replicated immediately, at the same time as they are dispatched to local consumers. Typically, the network <a href="https://en.wikipedia.org/wiki/Round-trip_delay_time" target="_blank" rel="noopener noreferrer">round-trip time</a> (RTT) between the remote regions defines end-to-end delivery latency.</p><p>Applications can create producers and consumers in any of the clusters, even when the remote clusters are not reachable (like during a network partition).</p><p>Producers and consumers can publish messages to and consume messages from any cluster in a Pulsar instance. However, subscriptions cannot only be local to the cluster where the subscriptions are created but also can be transferred between clusters after the replicated subscription is enabled. Once the replicated subscription is enabled, you can keep the subscription state in synchronization. Therefore, a topic can be asynchronously replicated across multiple geographical regions. In case of failover, a consumer can restart consuming messages from the failure point in a different cluster.</p><p><img loading="lazy" alt="Geo-replication example with a full-mesh pattern" src="/assets/images/geo-replication-34036a887215513a9173d150f92e093e.png" width="709" height="349" class="img_ev3q"></p><p>In the aforementioned example, the <strong>T1</strong> topic is replicated among three clusters, <strong>Cluster-A</strong>, <strong>Cluster-B</strong>, and <strong>Cluster-C</strong>.</p><p>All messages produced in any of the three clusters are delivered to all subscriptions in other clusters. In this case, <strong>C1</strong> and <strong>C2</strong> consumers receive all messages that <strong>P1</strong>, <strong>P2</strong>, and <strong>P3</strong> producers publish. Ordering is still guaranteed on a per-producer basis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="configure-replication">Configure replication<a href="#configure-replication" class="hash-link" aria-label="Direct link to Configure replication" title="Direct link to Configure replication"></a></h2><p>To configure geo-replicated clusters, complete the following steps.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="step-1-connect-replication-clusters">Step 1: Connect replication clusters<a href="#step-1-connect-replication-clusters" class="hash-link" aria-label="Direct link to Step 1: Connect replication clusters" title="Direct link to Step 1: Connect replication clusters"></a></h3><p>To replicate data among clusters, you need to configure each cluster to connect to the other. You can use the <a href="/reference/#/3.2.x/pulsar-admin/" target="_blank" rel="noopener noreferrer"><code>pulsar-admin</code></a> tool to create a connection.</p><p><strong>Example</strong></p><p>Suppose that you have 3 replication clusters: <code>us-west</code>, <code>us-cent</code>, and <code>us-east</code>.</p><ol><li><p>Configure the connection from <code>us-west</code> to <code>us-east</code>.</p><p>Run the following command on <code>us-west</code>.</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">bin/pulsar-admin clusters create </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">--broker-url pulsar://</span><span class="token operator"><</span><span class="token plain">DNS-OF-US-EAST</span><span class="token operator">></span><span class="token plain">:</span><span class="token operator"><</span><span class="token plain">PORT</span><span class="token operator">></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">--url http://</span><span class="token operator"><</span><span class="token plain">DNS-OF-US-EAST</span><span class="token operator">></span><span class="token plain">:</span><span class="token operator"><</span><span class="token plain">PORT</span><span class="token operator">></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">us-east</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></ol><div class="theme-admonition theme-admonition-tip alert alert--success admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>tip</div><div class="admonitionContent_S0QG"><ul><li>If you want to use a secure connection for a cluster, you can use the flags <code>--broker-url-secure</code> and <code>--url-secure</code>. For more information, see <a href="/reference/#/3.2.x/pulsar-admin/clusters?id=create" target="_blank" rel="noopener noreferrer">pulsar-admin clusters create</a>.</li><li>Different clusters may have different authentications. You can use the authentication flag <code>--auth-plugin</code> and <code>--auth-parameters</code> together to set cluster authentication, which overrides <code>brokerClientAuthenticationPlugin</code> and <code>brokerClientAuthenticationParameters</code> if <code>authenticationEnabled</code> sets to <code>true</code> in <code>broker.conf</code> and <code>standalone.conf</code>. For more information, see <a href="/docs/3.2.x/concepts-authentication/">authentication and authorization</a>.</li></ul></div></div><ol start="2"><li><p>Configure the connection from <code>us-west</code> to <code>us-cent</code>.</p><p>Run the following command on <code>us-west</code>.</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">bin/pulsar-admin clusters create </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">--broker-url pulsar://</span><span class="token operator"><</span><span class="token plain">DNS-OF-US-CENT</span><span class="token operator">></span><span class="token plain">:</span><span class="token operator"><</span><span class="token plain">PORT</span><span class="token operator">></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">--url http://</span><span class="token operator"><</span><span class="token plain">DNS-OF-US-CENT</span><span class="token operator">></span><span class="token plain">:</span><span class="token operator"><</span><span class="token plain">PORT</span><span class="token operator">></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">us-cent</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><li><p>Run similar commands on <code>us-east</code> and <code>us-cent</code> to create connections among clusters.</p></li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="step-2-grant-permissions-to-properties">Step 2: Grant permissions to properties<a href="#step-2-grant-permissions-to-properties" class="hash-link" aria-label="Direct link to Step 2: Grant permissions to properties" title="Direct link to Step 2: Grant permissions to properties"></a></h3><p>To replicate to a cluster, the tenant needs permission to use that cluster. You can grant permission to the tenant when you create the tenant or grant it later.</p><p>Specify all the intended clusters when you create a tenant:</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">bin/pulsar-admin tenants create my-tenant </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">--admin-roles my-admin-role </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">--allowed-clusters us-west,us-east,us-cent</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>To update permissions of an existing tenant, use <code>update</code> instead of <code>create</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="step-3-enable-geo-replication">Step 3: Enable geo-replication<a href="#step-3-enable-geo-replication" class="hash-link" aria-label="Direct link to Step 3: Enable geo-replication" title="Direct link to Step 3: Enable geo-replication"></a></h3><p>You can enable geo-replication at <strong>namespace</strong> or <strong>topic</strong> level.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="enable-geo-replication-at-namespace-level">Enable geo-replication at namespace level<a href="#enable-geo-replication-at-namespace-level" class="hash-link" aria-label="Direct link to Enable geo-replication at namespace level" title="Direct link to Enable geo-replication at namespace level"></a></h4><p>You can create a namespace with the following command sample.</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">bin/pulsar-admin namespaces create my-tenant/my-namespace</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>Initially, the namespace is not assigned to any cluster. You can assign the namespace to clusters using the <code>set-clusters</code> subcommand:</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">bin/pulsar-admin namespaces set-clusters my-tenant/my-namespace </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">--clusters us-west,us-east,us-cent</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><h4 class="anchor anchorWithStickyNavbar_LWe7" id="enable-geo-replication-at-topic-level">Enable geo-replication at topic level<a href="#enable-geo-replication-at-topic-level" class="hash-link" aria-label="Direct link to Enable geo-replication at topic level" title="Direct link to Enable geo-replication at topic level"></a></h4><p>You can set geo-replication at topic level using the command <code>pulsar-admin topics set-replication-clusters</code>. For the latest and complete information about <code>Pulsar admin</code>, including commands, flags, descriptions, and more information, see <a href="/reference/#/3.2.x/pulsar-admin/" target="_blank" rel="noopener noreferrer">Pulsar admin docs</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">bin/pulsar-admin topics set-replication-clusters --clusters us-west,us-east,us-cent my-tenant/my-namespace/my-topic</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><div class="theme-admonition theme-admonition-tip alert alert--success admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>tip</div><div class="admonitionContent_S0QG"><ul><li>You can change the replication clusters for a namespace at any time, without disruption to ongoing traffic. Replication channels are immediately set up or stopped in all clusters as soon as the configuration changes.</li><li>Once you create a geo-replication namespace, any topics that producers or consumers create within that namespace are replicated across clusters. Typically, each application uses the <code>serviceUrl</code> for the local cluster.</li><li>If you are using Pulsar version <code>2.10.x</code>, to enable geo-replication at topic level, you need to change the following configurations in the <code>conf/broker.conf</code> or <code>conf/standalone.conf</code> file to enable topic policies service.</li></ul><div class="language-conf codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-conf codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">systemTopicEnabled=true</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">topicLevelPoliciesEnabled=true</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></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="step-4-use-topics-with-geo-replication">Step 4: Use topics with geo-replication<a href="#step-4-use-topics-with-geo-replication" class="hash-link" aria-label="Direct link to Step 4: Use topics with geo-replication" title="Direct link to Step 4: Use topics with geo-replication"></a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="selective-replication">Selective replication<a href="#selective-replication" class="hash-link" aria-label="Direct link to Selective replication" title="Direct link to Selective replication"></a></h4><p>By default, messages are replicated to all clusters configured for the namespace. You can restrict replication selectively by specifying a replication list for a message, and then that message is replicated only to the subset in the replication list.</p><p>The following is an example of the <a href="/docs/3.2.x/client-libraries-java/">Java API</a>. Note the use of the <code>replicationClusters</code> method when you construct the <a href="https://pulsar.apache.org/api/client/3.2.x/org/apache/pulsar/client/api/Message" target="_blank" rel="noopener noreferrer">Message</a> object:</p><div class="language-java codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-java codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token class-name">List</span><span class="token generics punctuation" style="color:rgb(248, 248, 242)"><</span><span class="token generics class-name">String</span><span class="token generics punctuation" style="color:rgb(248, 248, 242)">></span><span class="token plain"> restrictReplicationTo </span><span class="token operator">=</span><span class="token plain"> </span><span class="token class-name">Arrays</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">asList</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)">"us-west"</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)">"us-east"</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 class-name">Producer</span><span class="token plain"> producer </span><span class="token operator">=</span><span class="token plain"> client</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">newProducer</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"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">topic</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token string" style="color:rgb(255, 121, 198)">"some-topic"</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 function" style="color:rgb(80, 250, 123)">create</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><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">producer</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">newMessage</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"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">value</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token string" style="color:rgb(255, 121, 198)">"my-payload"</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">getBytes</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><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 function" style="color:rgb(80, 250, 123)">replicationClusters</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain">restrictReplicationTo</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 function" style="color:rgb(80, 250, 123)">send</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><h4 class="anchor anchorWithStickyNavbar_LWe7" id="topic-stats">Topic stats<a href="#topic-stats" class="hash-link" aria-label="Direct link to Topic stats" title="Direct link to Topic stats"></a></h4><p>You can check topic-specific statistics for geo-replication topics using one of the following methods.</p><div class="tabs-container tabList__CuJ"><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_LNqP tabs__item--active">pulsar-admin</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">REST API</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><p>Use the <a href="/reference/#/3.2.x/pulsar-admin/topics?id=stats" target="_blank" rel="noopener noreferrer"><code>pulsar-admin topics stats</code></a> command.</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">bin/pulsar-admin topics stats persistent://my-tenant/my-namespace/my-topic</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></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><p><a href="https://pulsar.apache.org/admin-rest-api?version=3.2.2&apiversion=v2#operation/getStats" target="_blank" rel="noopener noreferrer">GET /admin/v2/:schema/:tenant/:namespace/:topic/stats/getStats</a></p></div></div></div><p>Each cluster reports its own local stats, including the incoming and outgoing replication rates and backlogs.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="delete-a-geo-replication-topic">Delete a geo-replication topic<a href="#delete-a-geo-replication-topic" class="hash-link" aria-label="Direct link to Delete a geo-replication topic" title="Direct link to Delete a geo-replication topic"></a></h4><p>Given that geo-replication topics exist in multiple regions, directly deleting a geo-replication topic is not possible. Instead, you should rely on automatic topic garbage collection.</p><p>In Pulsar, a topic is automatically deleted when the topic meets the following three conditions:</p><ul><li>no producers or consumers are connected to it;</li><li>no subscriptions to it;</li><li>no more messages are kept for retention. |
| For geo-replication topics, each region uses a fault-tolerant mechanism to decide when deleting the topic locally is safe.</li></ul><p>You can explicitly disable topic garbage collection by setting <code>brokerDeleteInactiveTopicsEnabled</code> to <code>false</code> in your <a href="/docs/3.2.x/reference-configuration/#broker">broker configuration</a>.</p><p>To delete a geo-replication topic, close all producers and consumers on the topic, and delete all of its local subscriptions in every replication cluster. When Pulsar determines that no valid subscription for the topic remains across the system, it will garbage collect the topic.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="replicated-subscriptions">Replicated subscriptions<a href="#replicated-subscriptions" class="hash-link" aria-label="Direct link to Replicated subscriptions" title="Direct link to Replicated subscriptions"></a></h2><p>Pulsar supports replicated subscriptions, so you can keep the subscription state in sync, within a sub-second timeframe, in the context of a topic that is being asynchronously replicated across multiple geographical regions.</p><p>In case of failover, a consumer can restart consuming from the failure point in a different cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="enable-replicated-subscription">Enable replicated subscription<a href="#enable-replicated-subscription" class="hash-link" aria-label="Direct link to Enable replicated subscription" title="Direct link to Enable replicated subscription"></a></h3><p>If you want to use replicated subscriptions in Pulsar:</p><ul><li><p>For broker side: set <code>enableReplicatedSubscriptions</code> to <code>true</code> in <a href="https://github.com/apache/pulsar/blob/470b674016c8718f2dfd0a0f93cf02d49af0fead/conf/broker.conf#L592" target="_blank" rel="noopener noreferrer"><code>broker.conf</code></a>.</p></li><li><p>For consumer side: replicated subscription is disabled by default. You can enable replicated subscriptions when creating a consumer.</p><div class="language-java codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-java codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token class-name">Consumer</span><span class="token generics punctuation" style="color:rgb(248, 248, 242)"><</span><span class="token generics class-name">String</span><span class="token generics punctuation" style="color:rgb(248, 248, 242)">></span><span class="token plain"> consumer </span><span class="token operator">=</span><span class="token plain"> client</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">newConsumer</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token class-name">Schema</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token constant" style="color:rgb(189, 147, 249)">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"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">topic</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token string" style="color:rgb(255, 121, 198)">"my-topic"</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 function" style="color:rgb(80, 250, 123)">subscriptionName</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token string" style="color:rgb(255, 121, 198)">"my-subscription"</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 function" style="color:rgb(80, 250, 123)">replicateSubscriptionState</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token boolean">true</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 function" style="color:rgb(80, 250, 123)">subscribe</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><h3 class="anchor anchorWithStickyNavbar_LWe7" id="advantages">Advantages<a href="#advantages" class="hash-link" aria-label="Direct link to Advantages" title="Direct link to Advantages"></a></h3><p>The advantages of replicated subscription are as follows.</p><ul><li>It is easy to implement the logic.</li><li>You can choose to enable or disable replicated subscription.</li><li>When you enable it, the overhead is low, and it is easy to configure.</li><li>When you disable it, the overhead is zero.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="limitations">Limitations<a href="#limitations" class="hash-link" aria-label="Direct link to Limitations" title="Direct link to Limitations"></a></h3><p>The limitations of replicated subscription are as follows.</p><ul><li>When you enable replicated subscriptions, you're creating a consistent distributed snapshot to establish an association between message ids from different clusters. The snapshots are taken periodically. The default value is <code>1 second</code>. It means that a consumer failing over to a different cluster can potentially receive 1 second of duplicates. You can also configure the frequency of the snapshot in the <code>broker.conf</code> file.</li><li>Only the base line cursor position is synced in replicated subscriptions while the individual acknowledgments are not synced. This means the messages acknowledged out-of-order could end up getting delivered again, in the case of a cluster failover.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="migrate-data-between-clusters-using-geo-replication">Migrate data between clusters using geo-replication<a href="#migrate-data-between-clusters-using-geo-replication" class="hash-link" aria-label="Direct link to Migrate data between clusters using geo-replication" title="Direct link to Migrate data between clusters using geo-replication"></a></h2><p>Using geo-replication to migrate data between clusters is a special use case of the <a href="/docs/3.2.x/concepts-replication/#active-active-replication">active-active replication pattern</a> when you don't have a large amount of data.</p><ol><li><p>Create your new cluster.</p></li><li><p>Add the new cluster to your old cluster.</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">bin/pulsar-admin clusters create new-cluster</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><li><p>Add the new cluster to your tenant.</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">bin/pulsar-admin tenants update my-tenant --cluster old-cluster,new-cluster</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><li><p>Set the clusters on your namespace.</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">bin/pulsar-admin namespaces set-clusters my-tenant/my-ns --cluster old-cluster,new-cluster</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><li><p>Update your applications using <a href="#replicated-subscriptions">replicated subscriptions</a>.</p></li><li><p>Validate subscription replication is active.</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">bin/pulsar-admin topics stats-internal public/default/t1</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><li><p>Move your consumers and producers to the new cluster by modifying the values of <code>serviceURL</code>.</p></li></ol><div class="theme-admonition theme-admonition-note alert alert--secondary admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"></path></svg></span>note</div><div class="admonitionContent_S0QG"><ul><li>The replication starts from step 4, which means existing messages in your old cluster are not replicated.</li><li>If you have some older messages to migrate, you can pre-create the replication subscriptions for each topic and set it at the earliest position by using <code>pulsar-admin topics create-subscription -s pulsar.repl.new-cluster -m earliest <topic></code>.</li></ul></div></div></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/pulsar-site/edit/main/versioned_docs/version-3.2.x/administration-geo.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" 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table-of-contents__left-border"><li><a href="#enable-geo-replication-for-a-namespace" class="table-of-contents__link toc-highlight">Enable geo-replication for a namespace</a></li><li><a href="#local-persistence-and-forwarding" class="table-of-contents__link toc-highlight">Local persistence and forwarding</a></li><li><a href="#configure-replication" class="table-of-contents__link toc-highlight">Configure replication</a><ul><li><a href="#step-1-connect-replication-clusters" class="table-of-contents__link toc-highlight">Step 1: Connect replication clusters</a></li><li><a href="#step-2-grant-permissions-to-properties" class="table-of-contents__link toc-highlight">Step 2: Grant permissions to properties</a></li><li><a href="#step-3-enable-geo-replication" class="table-of-contents__link toc-highlight">Step 3: Enable geo-replication</a></li><li><a href="#step-4-use-topics-with-geo-replication" class="table-of-contents__link toc-highlight">Step 4: Use topics with geo-replication</a></li></ul></li><li><a href="#replicated-subscriptions" class="table-of-contents__link toc-highlight">Replicated subscriptions</a><ul><li><a href="#enable-replicated-subscription" class="table-of-contents__link toc-highlight">Enable replicated subscription</a></li><li><a href="#advantages" class="table-of-contents__link toc-highlight">Advantages</a></li><li><a href="#limitations" class="table-of-contents__link toc-highlight">Limitations</a></li></ul></li><li><a href="#migrate-data-between-clusters-using-geo-replication" class="table-of-contents__link toc-highlight">Migrate data between clusters using geo-replication</a></li></ul></div></div></div></div></main></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title"></div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://www.apache.org/" target="_blank" rel="noopener noreferrer" 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