{"id":20287,"date":"2013-05-10T12:55:39","date_gmt":"2013-05-10T07:25:39","guid":{"rendered":"http:\/\/vskills.in\/certification\/tutorial\/?p=20287"},"modified":"2024-04-12T14:16:40","modified_gmt":"2024-04-12T08:46:40","slug":"row-key-sorting-by-partitioner","status":"publish","type":"page","link":"https:\/\/www.vskills.in\/certification\/tutorial\/row-key-sorting-by-partitioner\/","title":{"rendered":"Row key sorting by partitioner"},"content":{"rendered":"<p><a class=\"vsc\" href=\"http:\/\/www.vskills.in\/certification\/Certified-Cassandra-Professional\"><span class=\"vsc-cn\" style=\"text-align: center;\"><span style=\"color: red;\">Certify and Increase Opportunity.<\/span><br \/>\n<span style=\"color: green;\">Be <\/span><br \/>\nGovt. Certified Apache Cassandra Professional<br \/>\n<\/span><\/a><\/p>\n<h3><strong>Row key sorting by partitioner<\/strong><\/h3>\n<p style=\"text-align: center;\"><a ref=\"magnificPopup\" href=\"http:\/\/vskills.in\/certification\/tutorial\/wp-content\/uploads\/2013\/05\/partitioner.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-39871\" src=\"http:\/\/vskills.in\/certification\/tutorial\/wp-content\/uploads\/2013\/05\/partitioner.jpg\" alt=\"partitioner\" width=\"250\" height=\"250\" srcset=\"https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2013\/05\/partitioner.jpg 250w, https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2013\/05\/partitioner-150x150.jpg 150w\" sizes=\"auto, (max-width: 250px) 100vw, 250px\" \/><\/a><\/p>\n<p>Data partitioning determines how data is distributed across the nodes in the cluster. Three factors are involved with data distribution:<\/p>\n<ul>\n<li>A partitioner that determines which node to store the data on.<\/li>\n<li>The number of copies of data, which is determined by the replica placement strategy.<\/li>\n<li>The topology of the cluster, which is the number of nodes, the distribution of the nodes on racks, and the number of data centers.<\/li>\n<\/ul>\n<p>Column family data is partitioned across the nodes based on the row key. To determine the node where the first replica of a row will live, the ring is walked clockwise until it locates the node with a token value greater than that of the row key. Each node is responsible for the region of the ring between itself (inclusive) and its predecessor (exclusive). With the nodes sorted in token order, the last node is considered the predecessor of the first node; hence the ring representation.<\/p>\n<p>The partitioner cannot be changed without reloading all of your data. Cassandra offers the following partitioners:<\/p>\n<ul>\n<li>RandomPartitioner<\/li>\n<li>ByteOrderedPartitioner<\/li>\n<\/ul>\n<div class=\"apply\">\n<h3>Apply for Apache Cassandra Certification Now!!<\/h3>\n<p><a href=\"http:\/\/www.vskills.in\/certification\/Certified-Cassandra-Professional\">http:\/\/www.vskills.in\/certification\/Certified-Apache-Cassandra-Professional<\/a><\/p>\n<h4>Go To Tutorial- <a href=\"https:\/\/www.vskills.in\/certification\/tutorial\/apache-cassandra-professional\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Certified Apache Cassandra Professional Tutorial<\/strong><\/a><\/h4>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Certify and Increase Opportunity. Be Govt. Certified Apache Cassandra Professional Row key sorting by partitioner Data partitioning determines how data is distributed across the nodes in the cluster. Three factors are involved with data distribution: A partitioner that determines which node to store the data on. The number of copies of data, which is determined&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[63],"tags":[],"class_list":["post-20287","page","type-page","status-publish","hentry","category-apache-cassandra"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Row key sorting by partitioner - Tutorial<\/title>\n<meta name=\"description\" content=\"Row key sorting by partitioner. 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