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itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><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">Admin API</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">Get started</span><meta itemprop="position" content="2"></li></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: 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>Get started</h1></header><p>This guide walks you through the quickest way to get started with the following methods to manage topics. </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><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">Java</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><p><a href="/reference/#/next/pulsar-admin/" target="_blank" rel="noopener noreferrer">pulsar-admin CLI</a> is a command-line tool and is available in the bin folder of your Pulsar installation.</p></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><p><a href="/admin-rest-api/?version=3.2.2" target="_blank" rel="noopener noreferrer">REST API</a> belongs to HTTP calls, which are made against the admin APIs provided by brokers. In addition, both the Java admin API and pulsar-admin CLI use the REST API.</p></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><p><a href="https://pulsar.apache.org/api/admin/3.2.x/" target="_blank" rel="noopener noreferrer">Java admin API</a> is a programmable interface written in Java.</p></div></div></div><p>Check the detailed steps below.</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><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">Java</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><p>To manage topics using pulsar-admin CLI, complte the following steps.</p><ol><li><p>Set the service URL.</p></li><li><p>Create a partitioned topic.</p></li><li><p>Update the number of a partition.</p></li><li><p>Produce messages to the topic.</p></li><li><p>Check the stats of the topic.</p></li><li><p>Delete the topic.</p></li></ol><p><strong>Prerequisites</strong></p><ul><li>Install and start Pulsar standalone. This tutorial runs Pulsar 2.11 as an example.</li></ul><p><strong>Steps</strong></p><p><strong>Step 1:</strong> Set the service URLs to point to the broker service in <a href="https://github.com/apache/pulsar/blob/master/conf/client.conf" target="_blank" rel="noopener noreferrer">client.conf</a>.</p><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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">webServiceUrl=http://localhost:8080/</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">brokerServiceUrl=pulsar://localhost:6650/</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>Step 2:</strong> Create a persistent topic named <em>test-topic-1</em> with 6 partitions.</p><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">**Input**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-admin topics create-partitioned-topic \</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">persistent://public/default/test-topic-1 \</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">--partitions 6</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">There is no output. You can check the status of the topic in Step 5.</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>Step 3:</strong> Update the number of the partition to 8.</p><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">**Input**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-admin topics update-partitioned-topic \</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">persistent://public/default/test-topic-1 \</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">--partitions 8</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">There is no output. You can check the number of partitions in Step 5.</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>Step 4:</strong> Produce some messages to the partitioned topic <em>test-topic-1</em>.</p><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">**Input**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-perf produce -u pulsar://localhost:6650 -r 1000 -i 1000 persistent://public/default/test-topic-1</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">2023-03-07T15:33:56,832+0800 [main] INFO org.apache.pulsar.testclient.PerformanceProducer - Starting Pulsar perf producer with config: {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;confFile&quot; : &quot;/Users/yu/apache-pulsar-2.11.0/conf/client.conf&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;serviceURL&quot; : &quot;pulsar://localhost:6650&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;authPluginClassName&quot; : &quot;&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;authParams&quot; : &quot;&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;tlsTrustCertsFilePath&quot; : &quot;&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;tlsAllowInsecureConnection&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;tlsHostnameVerificationEnable&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;maxConnections&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;statsIntervalSeconds&quot; : 1000,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;ioThreads&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;enableBusyWait&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;listenerName&quot; : null,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;listenerThreads&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;maxLookupRequest&quot; : 50000,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;topics&quot; : [ &quot;persistent://public/default/test-topic-1&quot; ],</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;numTestThreads&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;msgRate&quot; : 1000,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;msgSize&quot; : 1024,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;numTopics&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">&quot;numProducers&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;separator&quot; : &quot;-&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;sendTimeout&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;producerName&quot; : null,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;adminURL&quot; : &quot;http://localhost:8080/&quot;,</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><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">2023-03-07T15:35:03,769+0800 [Thread-0] INFO org.apache.pulsar.testclient.PerformanceProducer - Aggregated latency stats --- Latency: mean: 8.931 ms - med: 3.775 - 95pct: 32.144 - 99pct: 98.432 - 99.9pct: 216.088 - 99.99pct: 304.807 - 99.999pct: 349.391 - Max: 351.235</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>Step 5:</strong> Check the internal stats of the partitioned topic <em>test-topic-1</em>.</p><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">**Input**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-admin topics partitioned-stats-internal \</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">persistent://public/default/test-topic-1</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">Below is a part of the output. For detailed explanations of topic stats, see Pulsar statistics.</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">{</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;metadata&quot; : {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;partitions&quot; : 8</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> },</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;partitions&quot; : {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;persistent://public/default/test-topic-1-partition-1&quot; : {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;entriesAddedCounter&quot; : 4213,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;numberOfEntries&quot; : 4213,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;totalSize&quot; : 8817693,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;currentLedgerEntries&quot; : 4212,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;currentLedgerSize&quot; : 8806289,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;lastLedgerCreatedTimestamp&quot; : &quot;2023-03-07T15:33:59.367+08:00&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;waitingCursorsCount&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;pendingAddEntriesCount&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;lastConfirmedEntry&quot; : &quot;65:4211&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;state&quot; : &quot;LedgerOpened&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;ledgers&quot; : [ {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;ledgerId&quot; : 49,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;entries&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;size&quot; : 11404,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;offloaded&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;underReplicated&quot; : false</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> }, {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;ledgerId&quot; : 65,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;entries&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;size&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;offloaded&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;underReplicated&quot; : false</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> } ],</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;cursors&quot; : {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;test-subscriptio-1&quot; : {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;markDeletePosition&quot; : &quot;49:-1&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;readPosition&quot; : &quot;49:0&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;waitingReadOp&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;pendingReadOps&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;messagesConsumedCounter&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;cursorLedger&quot; : -1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;cursorLedgerLastEntry&quot; : -1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;individuallyDeletedMessages&quot; : &quot;[]&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;lastLedgerSwitchTimestamp&quot; : &quot;2023-03-06T16:41:32.801+08:00&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;state&quot; : &quot;NoLedger&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;numberOfEntriesSinceFirstNotAckedMessage&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;totalNonContiguousDeletedMessagesRange&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;subscriptionHavePendingRead&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;subscriptionHavePendingReplayRead&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;properties&quot; : { }</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> },</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;test-subscription-1&quot; : {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;markDeletePosition&quot; : &quot;49:-1&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;readPosition&quot; : &quot;49:0&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;waitingReadOp&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;pendingReadOps&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;messagesConsumedCounter&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;cursorLedger&quot; : -1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;cursorLedgerLastEntry&quot; : -1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;individuallyDeletedMessages&quot; : &quot;[]&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;lastLedgerSwitchTimestamp&quot; : &quot;2023-03-06T16:41:32.801+08:00&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;state&quot; : &quot;NoLedger&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;numberOfEntriesSinceFirstNotAckedMessage&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;totalNonContiguousDeletedMessagesRange&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;subscriptionHavePendingRead&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;subscriptionHavePendingReplayRead&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;properties&quot; : { }</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> }</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> },</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;schemaLedgers&quot; : [ ],</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;compactedLedger&quot; : {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;ledgerId&quot; : -1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;entries&quot; : -1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;size&quot; : -1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;offloaded&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;underReplicated&quot; : false</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> }</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> },</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">...</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>Step 6:</strong> Delete the topic <em>test-topic-1</em>.</p><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">**Input**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-admin topics delete-partitioned-topic persistent://public/default/test-topic-1</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">There is no output. You can verify whether the _test-topic-1_ exists or not using the following command.</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">**Input**</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">List topics in `public/default` namespace.</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-admin topics list public/default</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>To manage topics using REST API, complete the following steps.</p><ol><li><p>Create a partitioned topic</p></li><li><p>Update the number of a partition.</p></li><li><p>Produce messages to the topic.</p></li><li><p>Check the stats of the topic.</p></li><li><p>Delete the topic.</p></li></ol><p><strong>Prerequisites</strong></p><ul><li>Install and start Pulsar standalone. This tutorial runs Pulsar 2.11 as an example.</li></ul><p><strong>Steps</strong></p><p><strong>Step 1:</strong> Create a persistent topic named <em>test-topic-2</em> with 4 partitions.</p><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">**Input**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">curl -X PUT http://localhost:8080/admin/v2/persistent/public/default/test-topic-2/partitions -H &#x27;Content-Type: application/json&#x27; -d &quot;4&quot;</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">There is no output. You can check the topic in Step 4.</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>Step 2:</strong> Update the number of the partition to 5.</p><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">**Input**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">curl -X POST http://localhost:8080/admin/v2/persistent/public/default/test-topic-2/partitions -H &#x27;Content-Type: application/json&#x27; -d &quot;5&quot;</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">There is no output. You can check the status of the topic in Step 4.</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>Step 3:</strong> Produce some messages to the partitioned topic <em>test-topic-2</em>.</p><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">**Input**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-perf produce -u pulsar://localhost:6650 -r 1000 -i 1000 persistent://public/default/test-topic-2</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">2023-03-08T15:47:06,268+0800 [main] INFO org.apache.pulsar.testclient.PerformanceProducer - Starting Pulsar perf producer with config: {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;confFile&quot; : &quot;/Users/yu/apache-pulsar-2.11.0/conf/client.conf&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;serviceURL&quot; : &quot;pulsar://localhost:6650&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;authPluginClassName&quot; : &quot;&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;authParams&quot; : &quot;&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;tlsTrustCertsFilePath&quot; : &quot;&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;tlsAllowInsecureConnection&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;tlsHostnameVerificationEnable&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;maxConnections&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;statsIntervalSeconds&quot; : 1000,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;ioThreads&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;enableBusyWait&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;listenerName&quot; : null,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;listenerThreads&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;maxLookupRequest&quot; : 50000,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;topics&quot; : [ &quot;persistent://public/default/test-topic-2&quot; ],</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;numTestThreads&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;msgRate&quot; : 1000,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;msgSize&quot; : 1024,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;numTopics&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">&quot;numProducers&quot; : 1,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;separator&quot; : &quot;-&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;sendTimeout&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;producerName&quot; : null,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;adminURL&quot; : &quot;http://localhost:8080/&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;deprecatedAuthPluginClassName&quot; : null,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;maxOutstanding&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;maxPendingMessagesAcrossPartitions&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;partitions&quot; : null,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;numMessages&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;compression&quot; : &quot;NONE&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;payloadFilename&quot; : null,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;payloadDelimiter&quot; : &quot;\\n&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;batchTimeMillis&quot; : 1.0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;batchMaxMessages&quot; : 1000,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;batchMaxBytes&quot; : 4194304,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;testTime&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;warmupTimeSeconds&quot; : 1.0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;encKeyName&quot; : null,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;encKeyFile&quot; : null,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;delay&quot; : 0,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;exitOnFailure&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;messageKeyGenerationMode&quot; : null,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;producerAccessMode&quot; : &quot;Shared&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;formatPayload&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;formatterClass&quot; : &quot;org.apache.pulsar.testclient.DefaultMessageFormatter&quot;,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;transactionTimeout&quot; : 10,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;numMessagesPerTransaction&quot; : 50,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;isEnableTransaction&quot; : false,</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"> &quot;isAbortTransaction&quot; : false,</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &quot;histogramFile&quot; : null</span><br></span><span class="token-line" style="color:#F8F8F2"><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><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">2023-03-08T15:53:28,178+0800 [Thread-0] INFO org.apache.pulsar.testclient.PerformanceProducer - Aggregated latency stats --- Latency: mean: 4.481 ms - med: 2.918 - 95pct: 10.710 - 99pct: 38.928 - 99.9pct: 112.689 - 99.99pct: 154.241 - 99.999pct: 193.249 - Max: 241.717</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>Step 4:</strong> Check the internal stats of the topic <em>test-topic-2</em>.</p><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">**Input**</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">curl -X GET http://localhost:8080/admin/v2/persistent/public/default/test-topic-2/partitioned-internalStats</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">For detailed explanations of topic stats, see Pulsar statistics.</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">```bash</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">{&quot;metadata&quot;:{&quot;partitions&quot;:5},&quot;partitions&quot;:{&quot;persistent://public/default/test-topic-2-partition-3&quot;:{&quot;entriesAddedCounter&quot;:47087,&quot;numberOfEntries&quot;:47087,&quot;totalSize&quot;:80406959,&quot;currentLedgerEntries&quot;:47087,&quot;currentLedgerSize&quot;:80406959,&quot;lastLedgerCreatedTimestamp&quot;:&quot;2023-03-08T15:47:07.273+08:00&quot;,&quot;waitingCursorsCount&quot;:0,&quot;pendingAddEntriesCount&quot;:0,&quot;lastConfirmedEntry&quot;:&quot;117:47086&quot;,&quot;state&quot;:&quot;LedgerOpened&quot;,&quot;ledgers&quot;:[{&quot;ledgerId&quot;:117,&quot;entries&quot;:0,&quot;size&quot;:0,&quot;offloaded&quot;:false,&quot;underReplicated&quot;:false}],&quot;cursors&quot;:{},&quot;schemaLedgers&quot;:[],&quot;compactedLedger&quot;:{&quot;ledgerId&quot;:-1,&quot;entries&quot;:-1,&quot;size&quot;:-1,&quot;offloaded&quot;:false,&quot;underReplicated&quot;:false}},&quot;persistent://public/default/test-topic-2-partition-2&quot;:{&quot;entriesAddedCounter&quot;:46995,&quot;numberOfEntries&quot;:46995,&quot;totalSize&quot;:80445417,&quot;currentLedgerEntries&quot;:46995,&quot;currentLedgerSize&quot;:80445417,&quot;lastLedgerCreatedTimestamp&quot;:&quot;2023-03-08T15:47:07.43+08:00&quot;,&quot;waitingCursorsCount&quot;:0,&quot;pendingAddEntriesCount&quot;:0,&quot;lastConfirmedEntry&quot;:&quot;118:46994&quot;,&quot;state&quot;:&quot;LedgerOpened&quot;,&quot;ledgers&quot;:[{&quot;ledgerId&quot;:118,&quot;entries&quot;:0,&quot;size&quot;:0,&quot;offloaded&quot;:false,&quot;underReplicated&quot;:false}],...</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>Step 5:</strong> Delete the topic <em>test-topic-2</em>.</p><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">**Input**</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><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">curl -X DELETE http://localhost:8080/admin/v2/persistent/public/default/test-topic-2/partitions</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">There is no output. You can verify whether the _test-topic-2_ exists or not using the following command.</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">**Input**</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">List topics in `public/default` namespace.</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><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">curl -X GET http://localhost:8080/admin/v2/persistent/public/default</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>To manage topics using Java admin API, complete following steps.</p><ol><li><p>Initiate a Pulsar Java client.</p></li><li><p>Create a partitioned topic</p></li><li><p>Update the number of a partition.</p></li><li><p>Produce messages to the topic.</p></li><li><p>Check the stats of the topic.</p></li><li><p>Delete the topic.</p></li></ol><p><strong>Prerequisites</strong></p><ul><li><p>Prepare a Java project and add the following dependency to your POM file.</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 generics punctuation" style="color:rgb(248, 248, 242)">&lt;</span><span class="token generics">dependency</span><span class="token generics punctuation" style="color:rgb(248, 248, 242)">&gt;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token generics punctuation" style="color:rgb(248, 248, 242)">&lt;</span><span class="token generics">groupId</span><span class="token generics punctuation" style="color:rgb(248, 248, 242)">&gt;</span><span class="token plain">org</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token plain">apache</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token plain">pulsar</span><span class="token operator">&lt;</span><span class="token operator">/</span><span class="token plain">groupId</span><span class="token operator">&gt;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token generics punctuation" style="color:rgb(248, 248, 242)">&lt;</span><span class="token generics">artifactId</span><span class="token generics punctuation" style="color:rgb(248, 248, 242)">&gt;</span><span class="token plain">pulsar</span><span class="token operator">-</span><span class="token plain">client</span><span class="token operator">-</span><span class="token plain">admin</span><span class="token operator">&lt;</span><span class="token operator">/</span><span class="token plain">artifactId</span><span class="token operator">&gt;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token generics punctuation" style="color:rgb(248, 248, 242)">&lt;</span><span class="token generics">version</span><span class="token generics punctuation" style="color:rgb(248, 248, 242)">&gt;</span><span class="token number">2.11</span><span class="token number">.0</span><span class="token operator">&lt;</span><span class="token operator">/</span><span class="token plain">version</span><span class="token operator">&gt;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token operator">&lt;</span><span class="token operator">/</span><span class="token plain">dependency</span><span class="token operator">&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></li></ul><p><strong>Steps</strong></p><p><strong>Step 1:</strong> Initiate a Pulsar Java client in your Java project.</p><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">**Input**</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">```java</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">String url = &quot;http://localhost:8080&quot;;</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">PulsarAdmin admin = PulsarAdmin.builder()</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> .serviceHttpUrl(url)</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> .build();</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>Step 2:</strong> Create a partitioned topic <em>test-topic-1</em> with 4 partitions.</p><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">**Input**</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">```java</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">admin.topics().createPartitionedTopic(&quot;persistent://public/default/test-topic-1&quot;, 4);</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>Step 3:</strong> Update the number of the partition to 5.</p><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">**Input**</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">```java</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">admin.topics().updatePartitionedTopic(&quot;test-topic-1&quot;, 5);</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>Step 4:</strong> Produce some messages to the topic <em>test-topic-1</em>.</p><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">**Input**</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">```java</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">PulsarClient client = PulsarClient.builder()</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> .serviceUrl(&quot;pulsar://localhost:6650&quot;)</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> .build();</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&lt;String&gt; producer = client.newProducer(Schema.STRING)</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> .topic(&quot;test-topic-1&quot;)</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> .blockIfQueueFull(true)</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> .create();</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">for (int i = 0; i &lt; 100; ++i) {</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> producer.newMessage().value(&quot;test&quot;).send();</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">}</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">producer.close();</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">client.close();</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>Step 5:</strong> Check the stats of the topic <em>test-topic-1</em>.</p><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">**Input**</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">```java</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">PartitionedTopicStats stats = admin.topics().getPartitionedStats(&quot;persistent://public/default/test-topic-1&quot;,false);</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">System.out.println(stats.getMsgInCounter());</span><br></span><span class="token-line" style="color:#F8F8F2"><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">**Output**</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">```java</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">100</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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>Step 6:</strong> Delete the topic <em>test-topic-1</em>.</p><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">**Input**</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">```java</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">admin.topics().deletePartitionedTopic(&quot;test-topic-1&quot;);</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">```</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></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="related-topics">Related topics<a href="#related-topics" class="hash-link" aria-label="Direct link to Related topics" title="Direct link to Related topics">​</a></h2><ul><li><p>To understand basics, see <a href="/docs/next/admin-api-get-started/admin-api-overview.md/">Pulsar admin API - Overview</a></p></li><li><p>To learn usage scenarios, see <a href="/docs/next/admin-api-get-started/admin-api-use-cases.md/">Pulsar admin API - Use cases</a>.</p></li><li><p>To learn common administrative tasks, see <a href="/docs/next/admin-api-get-started/admin-api-features.md/">Pulsar admin API - Features</a>.</p></li><li><p>To perform administrative operations, see <a href="/docs/next/admin-api-get-started/admin-api-tools.md/">Pulsar admin API - Tools</a>.</p></li><li><p>To check the detailed usage, see the references below.</p><ul><li><p><a href="/reference/#/next/pulsar-admin/" target="_blank" rel="noopener noreferrer">pulsar-admin CLI</a></p></li><li><p>Pulsar admin APIs</p><ul><li><p><a href="/docs/next/admin-api-get-started/reference-rest-api-overview.md/">REST API</a></p></li><li><p><a href="https://pulsar.apache.org/api/admin/3.2.x/" target="_blank" rel="noopener noreferrer">Java admin API</a></p></li></ul></li></ul></li></ul></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/docs/admin-get-started.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" 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