{"id":417,"date":"2021-07-13T04:59:49","date_gmt":"2021-07-13T04:59:49","guid":{"rendered":"https:\/\/www.wikitechy.com\/interview-questions\/?p=417"},"modified":"2021-09-13T11:37:53","modified_gmt":"2021-09-13T11:37:53","slug":"what-is-cluster-node-and-key-space-in-cassandra","status":"publish","type":"post","link":"https:\/\/www.wikitechy.com\/interview-questions\/cassandra\/what-is-cluster-node-and-key-space-in-cassandra\/","title":{"rendered":"What is cluster, node and key space in cassandra ?"},"content":{"rendered":"<div class=\"TextHeading\">\n<div class=\"hddn\">\n<h2 id=\"cluster\" class=\"color-purple\" style=\"text-align: justify;\">cluster:<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>Cluster is a collection of multiple data centers.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"ImageContent\" style=\"text-align: justify;\">\n<div class=\"hddn\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-medium\" src=\"https:\/\/cdn.wikitechy.com\/interview-questions\/cassandra\/cassandar-cluster-node.png\" alt=\"cassandra cluster node\" width=\"547\" height=\"313\" \/><\/div>\n<\/div>\n<div class=\"TextHeading\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<h2 id=\"node\" class=\"color-purple\">Node:<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>Cassandra is a distributed database management system designed to handle large amounts of data across many commodity servers.<\/li>\n<li>Like all other distributed database systems, it provides high availability with no single point of failure.<\/li>\n<li>Is a machine where Cassandra is running.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"ImageContent\" style=\"text-align: justify;\">\n<div class=\"hddn\"><img decoding=\"async\" class=\"aligncenter size-medium\" src=\"https:\/\/cdn.wikitechy.com\/interview-questions\/cassandra\/cassandra-ring-with-vnodes.png\" alt=\"cassandra ring with vnodes\" width=\"822\" height=\"486\" \/><\/div>\n<\/div>\n<div class=\"TextHeading\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<h2 id=\"keyspace\" class=\"color-purple\">keyspace:<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li>A keyspace in Cassandra is a namespace that defines data replication on nodes.<\/li>\n<li>A cluster contains one keyspace per node. Given below is the syntax for creating a keyspace using the statement CREATE KEYSPACE.<\/li>\n<li>It is similar to a database in Relational Database Management System, which is a group of tables, also called column families in Cassandra.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"CodeContent\">\n<div class=\"hddn\">\n<figure class=\"highlight\" style=\"text-align: justify;\">\n<pre><code id=\"code1\" class=\"apache hljs xml\" data-lang=\"apache\"><span class=\"nt\">CREATE KEYSPACE <span class=\"hljs-tag\"><<span class=\"hljs-title\">identifier<\/span>><\/span> WITH <span class=\"hljs-tag\"><<span class=\"hljs-title\">properties<\/span>><\/span><\/span><\/code><\/pre>\n<\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Answer : Cluster is a collection of multiple data centers.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2642],"tags":[195,201,2690,2762,1119,203,2705,2645,2760,2759,2761,2753,2703,2749,2731,2764,2757,2756,2755,199,214,363,209,283,2765,2676,2709,2758,205,2751,485,196,212,712,207,711,2763,204,282,208,206,2750,2677,200,2118,197,280,364,2752,2754,2766,2711,216,285],"class_list":["post-417","post","type-post","status-publish","format-standard","hentry","category-cassandra","tag-accenture-interview-questions-and-answers","tag-allstate-solutions-pvt-ltd-interview-questions-and-answers","tag-apache-cassandra","tag-apache-cassandra-cluster","tag-att-interview-questions-and-answers","tag-capgemini-interview-questions-and-answers","tag-cassandra-certification-passing-score","tag-cassandra-certification-sample-questions","tag-cassandra-cluster-setup","tag-cassandra-clustering-key","tag-cassandra-create-cluster","tag-cassandra-datacenter-vs-cluster","tag-cassandra-developer-practice-test","tag-cassandra-multiple-choice-question","tag-cassandra-nodetool","tag-cassandra-partition-key","tag-cassandra-vnodes-balancing","tag-cassandra-vnodes-configuration","tag-cassandra-vnodes-explained","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-cgi-group-inc-interview-questions-and-answers","tag-ciena-corporation-interview-questions-and-answers","tag-collabera-technologies-interview-questions-and-answers","tag-conduent-interview-questions-and-answers","tag-create-keyspace-in-cassandra","tag-cvent-interview-questions-and-answers","tag-datastax-cassandra-certification-questions","tag-dba-interview-questions","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-difference-between-cluster-and-node","tag-ernst-young-interview-questions-and-answers","tag-ibm-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-indiabulls-technology-solutions-ltd-interview-questions-and-answers","tag-mphasis-interview-questions-and-answers","tag-nagarro-software-pvt-ltd-interview-questions-and-answers","tag-node-and-key-space-in-cassandra","tag-oracle-corporation-interview-questions-and-answers","tag-persistent-systems-interview-questions-and-answers","tag-prokarma-softech-pvt-ltd-interview-questions-and-answers","tag-sap-labs-india-pvt-ltd-interview-questions-and-answers","tag-scql-interview-questions","tag-synechron-technologies-pvt-ltd-interview-questions-and-answers","tag-tech-mahindra-interview-questions-and-answers","tag-tecnotree-interview-questions-and-answers","tag-unitedhealth-group-interview-questions-and-answers","tag-virtusa-consulting-services-pvt-ltd-interview-questions-and-answers","tag-wells-fargo-interview-questions-and-answers","tag-what-is-a-node-in-cassandra","tag-what-is-datacenter-in-cassandra","tag-what-is-keyspace-in-cassandra","tag-what-is-seed-node-in-cassandra","tag-wipro-interview-questions-and-answers","tag-xoriant-solutions-pvt-ltd-interview-questions-and-answers"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is cluster, node and key space in cassandra ? 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