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{"id":307,"date":"2021-07-12T19:32:34","date_gmt":"2021-07-12T19:32:34","guid":{"rendered":"https:\/\/www.wikitechy.com\/interview-questions\/?p=307"},"modified":"2021-09-14T06:24:57","modified_gmt":"2021-09-14T06:24:57","slug":"what-is-the-process-to-perform-an-incremental-data-load-in-sqoop","status":"publish","type":"post","link":"https:\/\/www.wikitechy.com\/interview-questions\/big-data\/what-is-the-process-to-perform-an-incremental-data-load-in-sqoop\/","title":{"rendered":"What is the process to perform an incremental data load in sqoop ?"},"content":{"rendered":"<div class=\"TextHeading\">\n<div class=\"hddn\">\n<h2 id=\"process-to-perform-an-incremental-data-load-in-sqoop\" class=\"color-purple\" style=\"text-align: justify;\">Process to perform an incremental data load in sqoop:<\/h2>\n<\/div>\n<\/div>\n<div class=\"Content\" style=\"text-align: justify;\">\n<div class=\"hddn\">\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Sqoop provides an incremental import mode which can be used to retrieve only rows newer than some previously-imported set of rows.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div class=\"ImageContent\">\n<div class=\"hddn\"><img decoding=\"async\" class=\"img-responsive center-block aligncenter\" src=\"https:\/\/cdn.wikitechy.com\/interview-questions\/sqoop\/what-is-the-process-to-perform-an-incremental-data-load-in-sqoop.png\" alt=\"What is the process to perform an incremental data load in Sqoop\" \/><\/div>\n<\/div>\n<ul>\n<li><a href=\"https:\/\/www.wikitechy.com\/interview-questions\/sqoop\/\" target=\"-blank\" rel=\"noopener\">Sqoop<\/a>\u00a0supports two types of incremental imports:\u00a0<code>append\u00a0<\/code>and\u00a0<code>lastmodified.\u00a0<\/code>You can use the<code>\u00a0--incremental\u00a0<\/code>argument to specify the type of incremental import to perform.<\/li>\n<li>You must specify\u00a0<code>append\u00a0<\/code>mode when importing a table where new rows are frequently being inserted with increasing row id values. You can specify the column containing the row\u2019s id with\u00a0<code>--check-column.\u00a0<\/code>Sqoop imports rows where the verify column have a value greater than the single specified with<code>\u00a0--last-value.<\/code><\/li>\n<li>An alternating table update strategy supports by Sqoop is known<code>\u00a0lastmodified<\/code>\u00a0mode. You must use this while rows of the source table might be updated, and then each such update will set the value of a last-modified column to the present timestamp. Rows where have the check column holds a timestamp more and more new than the timestamp specified with<code>\u00a0--last-value\u00a0<\/code>are imported.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"text-center row\" style=\"text-align: justify;\">\n<div class=\"col-sm-12\">\n<div id=\"bsa-zone_1590522538159-8_123456\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-medium aligncenter\" src=\"https:\/\/cdn.wikitechy.com\/interview-questions\/bIG-DATA\/process-to-perform-an-incremental-data-load-in-sqoop.png\" alt=\"process-to-perform-an-incremental-data-load-in-sqoop\" width=\"528\" height=\"253\" \/><\/div>\n<\/div>\n<\/div>\n<div class=\"ImageContent\">\n<div class=\"hddn\" style=\"text-align: justify;\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Answer : Sqoop provides an incremental import mode.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[1065],"tags":[195,1119,360,203,199,214,1120,205,485,222,484,196,212,286,970,366,288,367,206,1714,1709,1707,1704,1703,1702,1705,1708,1711,1710,1712,1715,1713,1706,975,200,974,197,280,364,968,216,285,1121],"class_list":["post-307","post","type-post","status-publish","format-standard","hentry","category-big-data","tag-accenture-interview-questions-and-answers","tag-att-interview-questions-and-answers","tag-atos-interview-questions-and-answers","tag-capgemini-interview-questions-and-answers","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-cgi-group-inc-interview-questions-and-answers","tag-collabera-technologiesinterview-questions-and-answers","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-ernst-young-interview-questions-and-answers","tag-flipkart-interview-questions-and-answers","tag-genpact-interview-questions-and-answers","tag-ibm-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-lt-infotech-interview-questions-and-answers","tag-mindtree-interview-questions-and-answers","tag-netapp-interview-questions-and-answers","tag-r-systems-interview-questions-and-answers","tag-rbs-india-development-centre-pvt-ltd-interview-questions-and-answers","tag-sap-labs-india-pvt-ltd-interview-questions-and-answers","tag-sqoop-difficult-interview-questions","tag-sqoop-export","tag-sqoop-hive-import","tag-sqoop-incremental-export","tag-sqoop-incremental-import-example","tag-sqoop-incremental-import-hive","tag-sqoop-incremental-import-with-query","tag-sqoop-incremental-load","tag-sqoop-incremental-load-example","tag-sqoop-incremental-update-example","tag-sqoop-merge","tag-sqoop-scenario-based-interview-questions","tag-sqoop-scenario-based-questions","tag-sqoop-split-by","tag-tata-consultancy-service-interview-questions-and-answers","tag-tech-mahindra-interview-questions-and-answers","tag-trigent-software-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-wipro-infotech-interview-questions-and-answers","tag-wipro-interview-questions-and-answers","tag-xoriant-solutions-pvt-ltd-interview-questions-and-answers","tag-zs-associates-interview-questions-and-answers"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is the process to perform an incremental data load in sqoop ?<\/title>\n<meta name=\"description\" content=\"What is the process to perform an incremental data load in sqoop ? 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