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strict";n.r(t),t.default=n.p+"assets/images/ClusterLogical-a82f8d136804e81aa069c9cb7f1f53ec.png"},61:function(e,t,n){"use strict";n.r(t),n.d(t,"frontMatter",(function(){return s})),n.d(t,"metadata",(function(){return u})),n.d(t,"rightToc",(function(){return p})),n.d(t,"default",(function(){return d}));var r=n(2),a=n(6),o=n(0),l=n.n(o),A=n(113),c=(n(121),n(124)),i=n(125),s={title:"Cluster",sidebar_label:"cluster",description:"Cluster"},u={unversionedId:"components/cluster",id:"components/cluster",isDocsHomePage:!1,title:"Cluster",description:"Cluster",source:"@site/docs/components/cluster.md",slug:"/components/cluster",permalink:"/docs/components/cluster",editUrl:"https://github.com/apache/incubator-pinot/edit/master/website/docs/components/cluster.md",version:"current",sidebar_label:"cluster",sidebar:"docs",previous:{title:"Broker",permalink:"/docs/components/broker"},next:{title:"Pinot Query Language (PQL)",permalink:"/docs/components/controller"}},p=[{value:"Cluster components",id:"cluster-components",children:[{value:"Participant",id:"participant",children:[]},{value:"Spectator",id:"spectator",children:[]},{value:"Controller",id:"controller",children:[]}]},{value:"Logical view",id:"logical-view",children:[]},{value:"Setup a Pinot Cluster",id:"setup-a-pinot-cluster",children:[{value:"Using docker images",id:"using-docker-images",children:[]}]}],b={rightToc:p};function d(e){var t=e.components,o=Object(a.a)(e,["components"]);return Object(A.b)("wrapper",Object(r.a)({},b,o,{components:t,mdxType:"MDXLayout"}),Object(A.b)("p",null,"Cluster is a set a nodes comprising of servers, brokers, controllers and minions."),Object(A.b)("p",null,"Pinot leverages ",Object(A.b)("a",Object(r.a)({parentName:"p"},{href:"http://helix.apache.org"}),"Apache Helix")," 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."),Object(A.b)("p",null,Object(A.b)("img",{alt:"Cluster Components",src:n(169).default})),Object(A.b)("h2",{id:"cluster-components"},"Cluster components"),Object(A.b)("p",null,"Briefly, Helix divides nodes into three logical components based on their responsibilities"),Object(A.b)("h3",{id:"participant"},"Participant"),Object(A.b)("p",null,"The nodes that host distributed, partitioned resources"),Object(A.b)("h3",{id:"spectator"},"Spectator"),Object(A.b)("p",null,"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)."),Object(A.b)("h3",{id:"controller"},"Controller"),Object(A.b)("p",null,"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."),Object(A.b)("ul",null,Object(A.b)("li",{parentName:"ul"},"Pinot Servers are modeled as Participants, more details about server nodes can be found in ",Object(A.b)("a",Object(r.a)({parentName:"li"},{href:"../../docs/components/server"}),"Server")),Object(A.b)("li",{parentName:"ul"},"Pinot Brokers are modeled as Spectators, more details about broker nodes can be found in ",Object(A.b)("a",Object(r.a)({parentName:"li"},{href:"../../docs/components/broker"}),"Broker")),Object(A.b)("li",{parentName:"ul"},"Pinot Controllers are modeled as Controllers, more details about controller nodes can be found in ",Object(A.b)("a",Object(r.a)({parentName:"li"},{href:"../../docs/components/controller"}),"Controller"))),Object(A.b)("h2",{id:"logical-view"},"Logical view"),Object(A.b)("p",null,"Another way to visualize the cluster is a logical view, wherein a cluster contains ",Object(A.b)("a",Object(r.a)({parentName:"p"},{href:"../../docs/components/segments"}),"tenants"),", tenants contain ",Object(A.b)("a",Object(r.a)({parentName:"p"},{href:"../../docs/components/tables"}),"tables"),", and tables contain ",Object(A.b)("a",Object(r.a)({parentName:"p"},{href:"../../docs/components/segments"}),"segments"),"."),Object(A.b)("p",null,Object(A.b)("img",{alt:"Logical View",src:n(170).default})),Object(A.b)("h2",{id:"setup-a-pinot-cluster"},"Setup a Pinot Cluster"),Object(A.b)("p",null,"Typically, there is only cluster per environment/data center. There is no needed to create multiple Pinot clusters since Pinot supports the concept of ",Object(A.b)("a",Object(r.a)({parentName:"p"},{href:"../../docs/components/tenants"}),"tenants"),"."),Object(A.b)("p",null,"At LinkedIn, the largest Pinot cluster consists of 1000+ nodes."),Object(A.b)("p",null,"To setup a Pinot cluster, we need to first start Zookeeper:"),Object(A.b)(c.a,{className:"Install",defaultValue:"Using launcher scripts",values:[{label:Object(A.b)(l.a.Fragment,null,Object(A.b)("i",{className:"Using docker images"})," Using docker images"),value:"docker"},{label:Object(A.b)(l.a.Fragment,null,Object(A.b)("i",{className:"Using launcher scripts"})," Using launcher scripts"),value:"launcer"}],mdxType:"Tabs"},Object(A.b)(i.a,{value:"docker",mdxType:"TabItem"},Object(A.b)("ol",null,Object(A.b)("li",{parentName:"ol"},"Create a Network\nCreate an isolated bridge network in docker")),Object(A.b)("pre",null,Object(A.b)("code",Object(r.a)({parentName:"pre"},{className:"language-bash"}),"docker network create -d bridge pinot-demo\n")),Object(A.b)("ol",{start:2},Object(A.b)("li",{parentName:"ol"},"Start Zookeeper")),Object(A.b)("p",null,"Start Zookeeper in daemon."),Object(A.b)("pre",null,Object(A.b)("code",Object(r.a)({parentName:"pre"},{className:"language-bash"}),"docker run \\\n    --network=pinot-demo \\\n    --name pinot-zookeeper \\\n    --restart always \\\n    -p 2181:2181 \\\n    -d zookeeper:3.5.6\n")),Object(A.b)("ol",{start:3},Object(A.b)("li",{parentName:"ol"},"Start Zookeeper UI\nStart  ZKUI to browse Zookeeper data at http://localhost:9090.")),Object(A.b)("pre",null,Object(A.b)("code",Object(r.a)({parentName:"pre"},{className:"language-bash"}),"docker run \\\n    --network pinot-demo --name=zkui \\\n    -p 9090:9090 \\\n    -e ZK_SERVER=pinot-zookeeper:2181 \\\n    -d qnib/plain-zkui:latest\n")),Object(A.b)("ol",{start:4},Object(A.b)("li",{parentName:"ol"}))),Object(A.b)(i.a,{value:"launcer",mdxType:"TabItem"},Object(A.b)("p",null,"Download Pinot Distribution using instructions in Download"),Object(A.b)("p",null,"Start Zookeeper"),Object(A.b)("pre",null,Object(A.b)("code",Object(r.a)({parentName:"pre"},{className:"language-bash"}),"bin/pinot-admin.sh StartZookeeper\n")),Object(A.b)("ol",{start:2},Object(A.b)("li",{parentName:"ol"},"Start Zooinspector")),Object(A.b)("p",null,"Install ",Object(A.b)("a",Object(r.a)({parentName:"p"},{href:"https://github.com/jfim/zooinspector"}),"zooinspector")," to view the data in Zookeeper, and connect to localhost:2181"))),Object(A.b)("p",null,"Once we've started Zookeeper, we can start other components to join this cluster. If you're using docker, pull the latest ",Object(A.b)("inlineCode",{parentName:"p"},"apachepinot/pinot")," image. "),Object(A.b)("h3",{id:"using-docker-images"},"Using docker images"),Object(A.b)("h4",{id:"pull-pinot-docker-image"},"Pull pinot docker image"),Object(A.b)("p",null,"(Optional) You can also follow the instructions here to build your own images.",Object(A.b)("br",null)),Object(A.b)("p",null,"You can try out pre-built Pinot all-in-one docker image."),Object(A.b)("pre",null,Object(A.b)("code",Object(r.a)({parentName:"pre"},{className:"language-sql"}),"export PINOT_VERSION=0.3.0-SNAPSHOT\nexport PINOT_IMAGE=apachepinot/pinot:${PINOT_VERSION}\ndocker pull ${PINOT_IMAGE}\n")),Object(A.b)("p",null,"To start other components to join the cluster"),Object(A.b)("ul",null,Object(A.b)("li",{parentName:"ul"},"Start Controller"),Object(A.b)("li",{parentName:"ul"},"Start Broker"),Object(A.b)("li",{parentName:"ul"},"Start Server")),Object(A.b)("p",null,"Explore your cluster via Pinot Data Explorer"))}d.isMDXComponent=!0}}]);