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| <div><a href="#" class="skipToContent_1oUP">Skip to main content</a></div><div class="announcementBar_3WsW" style="background-color:#252532;color:#fff" role="banner"><div class="announcementBarContent_3EUC announcementBarCloseable_3myR">⭐️ If you love <b>Apache Pinot</b>, please give it a star on <a target="_blank" href="https://github.com/apache/pinot"><b>GitHub</b></a>! ⭐️</div><button type="button" class="announcementBarClose_38nx clean-btn" aria-label="Close"><span aria-hidden="true">×</span></button></div><nav class="navbar navbar--fixed-top navbarHideable_2qcr"><div class="navbar__inner"><div class="navbar__items"><button aria-label="Navigation bar toggle" class="navbar__toggle clean-btn" type="button" tabindex="0"><svg width="30" height="30" viewBox="0 0 30 30" aria-hidden="true"><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></button><a class="navbar__brand" href="/"><img 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class="menu__list-item menu__list-item--collapsed"><a class="menu__link menu__link--sublist" href="#">About</a></li><li class="menu__list-item menu__list-item--collapsed"><a class="menu__link menu__link--sublist" href="#">Administration</a></li><li class="menu__list-item"><a class="menu__link menu__link--sublist menu__link--active" href="#">Components</a><ul style="display:block;overflow:visible;height:auto" class="menu__list"><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/components/broker">broker</a></li><li class="menu__list-item"><a aria-current="page" class="menu__link menu__link--active active" tabindex="0" href="/docs/components/cluster">cluster</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/components/controller">PQL</a></li></ul></li></ul></nav></div></aside><main class="docMainContainer_3ufF"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_3FnS"><div class="docItemContainer_33ec"><article><div class="tocCollapsible_1PrD tocMobile_3Hoh"><button type="button" class="clean-btn tocCollapsibleButton_2O1e">On this page</button></div><div class="markdown"><header><h1 class="h1Heading_27L5">Cluster</h1></header><p>Cluster is a set a nodes comprising of servers, brokers, controllers and minions.</p><p>Pinot leverages <a href="http://helix.apache.org" target="_blank" rel="noopener noreferrer">Apache Helix</a> for cluster management. Helix is a cluster management framework to manage replicated, partitioned resources in a distributed system. Helix uses Zookeeper to store cluster state and metadata.</p><p><img alt="Cluster Components" 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"></p><h2><a aria-hidden="true" tabindex="-1" class="anchor" id="cluster-components"></a>Cluster components<a class="hash-link" href="#cluster-components" title="Direct link to heading">#</a></h2><p>Briefly, Helix divides nodes into three logical components based on their responsibilities</p><h3><a aria-hidden="true" tabindex="-1" class="anchor" id="participant"></a>Participant<a class="hash-link" href="#participant" title="Direct link to heading">#</a></h3><p>The nodes that host distributed, partitioned resources</p><h3><a aria-hidden="true" tabindex="-1" class="anchor" id="spectator"></a>Spectator<a class="hash-link" href="#spectator" title="Direct link to heading">#</a></h3><p>The nodes that observe the current state of each Participant and use that information to access the resources. Spectators are notified of state changes in the cluster (state of a participant, or that of a partition in a participant).</p><h3><a aria-hidden="true" tabindex="-1" class="anchor" id="controller"></a>Controller<a class="hash-link" href="#controller" title="Direct link to heading">#</a></h3><p>The node that observes and controls the Participant nodes. It is responsible for coordinating all transitions in the cluster and ensuring that state constraints are satisfied while maintaining cluster stability.</p><ul><li>Pinot Servers are modeled as Participants, more details about server nodes can be found in <a href="/docs/components/server">Server</a></li><li>Pinot Brokers are modeled as Spectators, more details about broker nodes can be found in <a href="/docs/components/broker">Broker</a></li><li>Pinot Controllers are modeled as Controllers, more details about controller nodes can be found in <a href="/docs/components/controller">Controller</a></li></ul><h2><a aria-hidden="true" tabindex="-1" class="anchor" id="logical-view"></a>Logical view<a class="hash-link" href="#logical-view" title="Direct link to heading">#</a></h2><p>Another way to visualize the cluster is a logical view, wherein a cluster contains <a href="/docs/components/segments">tenants</a>, tenants contain <a href="/docs/components/tables">tables</a>, and tables contain <a href="/docs/components/segments">segments</a>.</p><p><img alt="Logical View" src="/assets/images/ClusterLogical-a82f8d136804e81aa069c9cb7f1f53ec.png"></p><h2><a aria-hidden="true" tabindex="-1" class="anchor" id="setup-a-pinot-cluster"></a>Setup a Pinot Cluster<a class="hash-link" href="#setup-a-pinot-cluster" title="Direct link to heading">#</a></h2><p>Typically, there is only cluster per environment/data center. There is no needed to create multiple Pinot clusters since Pinot supports the concept of <a href="/docs/components/tenants">tenants</a>.</p><p>At LinkedIn, the largest Pinot cluster consists of 1000+ nodes.</p><p>To setup a Pinot cluster, we need to first start Zookeeper:</p><div class="tabs-container"><ul role="tablist" aria-orientation="horizontal" class="tabs Install"><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_1uMI"><i class="Using docker images"></i> Using docker images</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_1uMI"><i class="Using launcher scripts"></i> Using launcher scripts</li></ul><div class="margin-vert--md"><div role="tabpanel" hidden=""><ol><li>Create a Network |
| Create an isolated bridge network in docker</li></ol><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly bash"><pre tabindex="0" class="prism-code language-bash codeBlock_23N8 thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_39YC"><span class="token-line" style="color:#F8F8F2"><span class="token plain">docker network create -d bridge pinot-demo</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o clean-btn">Copy</button></div></div><ol start="2"><li>Start Zookeeper</li></ol><p>Start Zookeeper in daemon.</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly bash"><pre tabindex="0" class="prism-code language-bash codeBlock_23N8 thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_39YC"><span class="token-line" style="color:#F8F8F2"><span class="token plain">docker run </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --network</span><span class="token operator">=</span><span class="token plain">pinot-demo </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --name pinot-zookeeper </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --restart always </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -p </span><span class="token number">2181</span><span class="token plain">:2181 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -d zookeeper:3.5.6</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o clean-btn">Copy</button></div></div><ol start="3"><li>Start Zookeeper UI |
| Start ZKUI to browse Zookeeper data at http://localhost:9090.</li></ol><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly bash"><pre tabindex="0" class="prism-code language-bash codeBlock_23N8 thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_39YC"><span class="token-line" style="color:#F8F8F2"><span class="token plain">docker run </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --network pinot-demo --name</span><span class="token operator">=</span><span class="token plain">zkui </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -p </span><span class="token number">9090</span><span class="token plain">:9090 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -e </span><span class="token assign-left variable" style="color:rgb(189, 147, 249);font-style:italic">ZK_SERVER</span><span class="token operator">=</span><span class="token plain">pinot-zookeeper:2181 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -d qnib/plain-zkui:latest</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o clean-btn">Copy</button></div></div><ol start="4"><li></li></ol></div><div role="tabpanel" hidden=""><p>Download Pinot Distribution using instructions in Download</p><p>Start Zookeeper</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly bash"><pre tabindex="0" class="prism-code language-bash codeBlock_23N8 thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_39YC"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pinot-admin.sh StartZookeeper</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o clean-btn">Copy</button></div></div><ol start="2"><li>Start Zooinspector</li></ol><p>Install <a href="https://github.com/jfim/zooinspector" target="_blank" rel="noopener noreferrer">zooinspector</a> to view the data in Zookeeper, and connect to localhost:2181</p></div></div></div><p>Once we've started Zookeeper, we can start other components to join this cluster. If you're using docker, pull the latest <code>apachepinot/pinot</code> image.</p><h3><a aria-hidden="true" tabindex="-1" class="anchor" id="using-docker-images"></a>Using docker images<a class="hash-link" href="#using-docker-images" title="Direct link to heading">#</a></h3><h4><a aria-hidden="true" tabindex="-1" class="anchor" id="pull-pinot-docker-image"></a>Pull pinot docker image<a class="hash-link" href="#pull-pinot-docker-image" title="Direct link to heading">#</a></h4><p>(Optional) You can also follow the instructions here to build your own images.<br></p><p>You can try out pre-built Pinot all-in-one docker image.</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly sql"><pre tabindex="0" class="prism-code language-sql codeBlock_23N8 thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_39YC"><span class="token-line" style="color:#F8F8F2"><span class="token plain">export PINOT_VERSION</span><span class="token operator">=</span><span class="token number">0.3</span><span class="token number">.0</span><span class="token operator">-</span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">SNAPSHOT</span><span class="token plain"></span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">export PINOT_IMAGE</span><span class="token operator">=</span><span class="token plain">apachepinot</span><span class="token operator">/</span><span class="token plain">pinot:${PINOT_VERSION}</span></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">docker pull ${PINOT_IMAGE}</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o clean-btn">Copy</button></div></div><p>To start other components to join the cluster</p><ul><li>Start Controller</li><li>Start Broker</li><li>Start Server</li></ul><p>Explore your cluster via Pinot Data Explorer</p></div><footer class="row 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