| <!doctype html> |
| <html class="docs-version-0.10.1" lang="en" dir="ltr"> |
| <head> |
| <meta charset="UTF-8"> |
| <meta name="viewport" content="width=device-width,initial-scale=1"> |
| <meta name="generator" content="Docusaurus v2.0.0-beta.14"> |
| <link rel="alternate" type="application/rss+xml" href="/blog/rss.xml" title="Apache Hudi: User-Facing Analytics RSS Feed"> |
| <link rel="alternate" type="application/atom+xml" href="/blog/atom.xml" title="Apache Hudi: User-Facing Analytics Atom Feed"> |
| <link rel="alternate" type="application/json" href="/blog/feed.json" title="Apache Hudi: User-Facing Analytics JSON Feed"> |
| <link rel="search" type="application/opensearchdescription+xml" title="Apache Hudi" href="/opensearch.xml"> |
| <link rel="alternate" type="application/rss+xml" href="/videos/rss.xml" title="Apache Hudi RSS Feed"> |
| <link rel="alternate" type="application/atom+xml" href="/videos/atom.xml" title="Apache Hudi Atom Feed"> |
| <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Comfortaa|Ubuntu|Roboto|Source+Code+Pro"> |
| <link rel="stylesheet" href="https://at-ui.github.io/feather-font/css/iconfont.css"><title data-react-helmet="true">Marker Mechanism | Apache Hudi</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://hudi.apache.org/docs/0.10.1/markers"><meta data-react-helmet="true" name="docsearch:language" content="en"><meta data-react-helmet="true" name="docsearch:version" content="0.10.1"><meta data-react-helmet="true" name="docsearch:docusaurus_tag" content="docs-default-0.10.1"><meta data-react-helmet="true" name="keywords" content="apache hudi, data lake, lakehouse, big data, apache spark, apache flink, presto, trino, analytics, data engineering"><meta data-react-helmet="true" property="og:title" content="Marker Mechanism | Apache Hudi"><meta data-react-helmet="true" name="description" content="Purpose of Markers"><meta data-react-helmet="true" property="og:description" content="Purpose of Markers"><link data-react-helmet="true" rel="icon" href="/assets/images/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://hudi.apache.org/docs/0.10.1/markers"><link data-react-helmet="true" rel="alternate" href="https://hudi.apache.org/docs/0.10.1/markers" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://hudi.apache.org/cn/docs/0.10.1/markers" hreflang="cn"><link data-react-helmet="true" rel="alternate" href="https://hudi.apache.org/docs/0.10.1/markers" hreflang="x-default"><link data-react-helmet="true" rel="preconnect" href="https://BH4D9OD16A-dsn.algolia.net" crossorigin="anonymous"><link rel="stylesheet" href="/assets/css/styles.052701b1.css"> |
| <link rel="preload" href="/assets/js/runtime~main.f21bf244.js" as="script"> |
| <link rel="preload" href="/assets/js/main.f75b8228.js" as="script"> |
| </head> |
| <body> |
| <script>!function(){function t(t){document.documentElement.setAttribute("data-theme",t)}var e=function(){var t=null;try{t=localStorage.getItem("theme")}catch(t){}return t}();t(null!==e?e:"light")}(),document.documentElement.setAttribute("data-announcement-bar-initially-dismissed",function(){try{return"true"===localStorage.getItem("docusaurus.announcement.dismiss")}catch(t){}return!1}())</script><div id="__docusaurus"> |
| <div><a href="#" class="skipToContent_OuoZ">Skip to main content</a></div><div class="announcementBar_axC9" role="banner"><div class="announcementBarContent_6uhP">⭐️ If you like <b>Apache Hudi</b>, give it a star on <a target="_blank" rel="noopener noreferrer" href="https://github.com/apache/hudi"><b>GitHub!<svg xmlns="http://www.w3.org/2000/svg\" width="16" height="16" fill="currentColor" class="bi bi-github" viewBox="0 -2 16 16"><path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0 0 16 8c0-4.42-3.58-8-8-8z"/></svg></b></a> ⭐</div></div><nav class="navbar navbar--fixed-top navbarWrapper_UIa0"><div class="navbar__inner navbarInnerStyle_FVs7"><img referrerpolicy="no-referrer-when-downgrade" src="https://static.scarf.sh/a.png?x-pxid=8f594acf-9b77-44fb-9475-3e82ead1910c" width="0" height="0" alt=""><img referrerpolicy="no-referrer-when-downgrade" src="https://analytics.apache.org/matomo.php?idsite=47&rec=1" width="0" height="0" alt=""><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="/"><div class="navbar__logo navbarLogo_Bz6n"><img src="/assets/images/hudi.png" alt="Apache Hudi" class="themedImage_TMUO themedImage--light_4Vu1"><img src="/assets/images/hudi.png" alt="Apache Hudi" class="themedImage_TMUO themedImage--dark_uzRr"></div></a><a class="navbar__item navbar__link navbarFontSize_x1wi" href="/docs/overview"><div class="labelWrapperDropdown_Mqbj">Docs</div></a><div class="navbar__item dropdown dropdown--hoverable"><a href="#" class="navbar__link downloadLinkDropdownHide_aDP3 navbarFontSize_x1wi"><div class="labelWrapperDropdown_Mqbj">Learn<svg width="10" height="6" viewBox="0 0 10 6" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M8.5 1.25 5 4.75l-3.5-3.5" stroke="#1C1E21" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"></path></svg></div></a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/talks"><div class="labelWrapperDropdown_Mqbj">Talks</div></a></li><li><a class="dropdown__link" href="/videos"><div class="labelWrapperDropdown_Mqbj">Video Guides</div></a></li><li><a class="dropdown__link" href="/docs/faq"><div class="labelWrapperDropdown_Mqbj">FAQ</div></a></li><li><a class="dropdown__link" href="/tech-specs"><div class="labelWrapperDropdown_Mqbj">Tech Specs</div></a></li><li><a class="dropdown__link" href="/tech-specs-1point0"><div class="labelWrapperDropdown_Mqbj">Tech Specs 1.0</div></a></li><li><a href="https://cwiki.apache.org/confluence/display/HUDI" target="_blank" rel="noopener noreferrer" class="dropdown__link"><span class="externalLink_AE3f">Technical Wiki<svg width="20" height="20" viewBox="0 0 26 26" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M16.965 8.745 9.01 16.7M10.561 8.758l6.403-.013-.013 6.403" stroke="#0DB1F9" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"></path><rect x="4.5" y="4.5" width="17" height="17" rx="2.5" stroke="#0DB1F9"></rect></svg></span></a></li></ul></div><div class="navbar__item dropdown dropdown--hoverable"><a href="#" class="navbar__link downloadLinkDropdownHide_aDP3 navbarFontSize_x1wi"><div class="labelWrapperDropdown_Mqbj">Contribute<svg width="10" height="6" viewBox="0 0 10 6" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M8.5 1.25 5 4.75l-3.5-3.5" stroke="#1C1E21" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"></path></svg></div></a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/contribute/how-to-contribute"><div class="labelWrapperDropdown_Mqbj">How to Contribute</div></a></li><li><a class="dropdown__link" href="/contribute/developer-setup"><div class="labelWrapperDropdown_Mqbj">Developer Setup</div></a></li><li><a class="dropdown__link" href="/contribute/rfc-process"><div class="labelWrapperDropdown_Mqbj">RFC Process</div></a></li><li><a class="dropdown__link" href="/contribute/report-security-issues"><div class="labelWrapperDropdown_Mqbj">Report Security Issues</div></a></li><li><a href="https://issues.apache.org/jira/projects/HUDI/summary" target="_blank" rel="noopener noreferrer" class="dropdown__link"><span class="externalLink_AE3f">Report Issues<svg width="20" height="20" viewBox="0 0 26 26" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M16.965 8.745 9.01 16.7M10.561 8.758l6.403-.013-.013 6.403" stroke="#0DB1F9" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"></path><rect x="4.5" y="4.5" width="17" height="17" rx="2.5" stroke="#0DB1F9"></rect></svg></span></a></li></ul></div><div class="navbar__item dropdown dropdown--hoverable"><a href="#" class="navbar__link downloadLinkDropdownHide_aDP3 navbarFontSize_x1wi"><div class="labelWrapperDropdown_Mqbj">Community<svg width="10" height="6" viewBox="0 0 10 6" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M8.5 1.25 5 4.75l-3.5-3.5" stroke="#1C1E21" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"></path></svg></div></a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/community/get-involved"><div class="labelWrapperDropdown_Mqbj">Get Involved</div></a></li><li><a class="dropdown__link" href="/community/syncs"><div class="labelWrapperDropdown_Mqbj">Community Syncs</div></a></li><li><a class="dropdown__link" href="/community/office_hours"><div class="labelWrapperDropdown_Mqbj">Office Hours</div></a></li><li><a class="dropdown__link" href="/community/team"><div class="labelWrapperDropdown_Mqbj">Team</div></a></li></ul></div><a class="navbar__item navbar__link navbarFontSize_x1wi" href="/blog"><div class="labelWrapperDropdown_Mqbj">Blog</div></a><a class="navbar__item navbar__link navbarFontSize_x1wi" href="/powered-by"><div class="labelWrapperDropdown_Mqbj">Who's Using</div></a><a class="navbar__item navbar__link navbarFontSize_x1wi" href="/roadmap"><div class="labelWrapperDropdown_Mqbj">Roadmap</div></a><a class="navbar__item navbar__link navbarFontSize_x1wi" href="/releases/download"><div class="labelWrapperDropdown_Mqbj">Download</div></a></div><div class="navbar__items navbar__items--right"><div class="navbar__item dropdown dropdown--hoverable dropdown--right"><a class="navbar__link downloadLinkDropdownHide_aDP3" href="/docs/0.10.1/overview"><div class="labelWrapperDropdown_Mqbj">0.10.1<svg width="10" height="6" viewBox="0 0 10 6" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M8.5 1.25 5 4.75l-3.5-3.5" stroke="#1C1E21" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"></path></svg></div></a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/docs/next/markers"><div class="labelWrapperDropdown_Mqbj">Current</div></a></li><li><a class="dropdown__link" href="/docs/markers"><div class="labelWrapperDropdown_Mqbj">0.14.1</div></a></li><li><a class="dropdown__link" href="/docs/0.14.0/markers"><div class="labelWrapperDropdown_Mqbj">0.14.0</div></a></li><li><a class="dropdown__link" href="/docs/0.13.1/markers"><div class="labelWrapperDropdown_Mqbj">0.13.1</div></a></li><li><a class="dropdown__link" href="/docs/0.13.0/markers"><div class="labelWrapperDropdown_Mqbj">0.13.0</div></a></li><li><a class="dropdown__link" href="/docs/0.12.3/markers"><div class="labelWrapperDropdown_Mqbj">0.12.3</div></a></li><li><a class="dropdown__link" href="/docs/0.12.2/markers"><div class="labelWrapperDropdown_Mqbj">0.12.2</div></a></li><li><a class="dropdown__link" href="/docs/0.12.1/markers"><div class="labelWrapperDropdown_Mqbj">0.12.1</div></a></li><li><a class="dropdown__link" href="/docs/0.12.0/markers"><div class="labelWrapperDropdown_Mqbj">0.12.0</div></a></li><li><a class="dropdown__link" href="/docs/0.11.1/markers"><div class="labelWrapperDropdown_Mqbj">0.11.1</div></a></li><li><a class="dropdown__link" href="/docs/0.11.0/markers"><div class="labelWrapperDropdown_Mqbj">0.11.0</div></a></li><li><a aria-current="page" class="dropdown__link dropdown__link--active" href="/docs/0.10.1/markers"><div class="labelWrapperDropdown_Mqbj">0.10.1</div></a></li><li><a class="dropdown__link" href="/docs/0.10.0/markers"><div class="labelWrapperDropdown_Mqbj">0.10.0</div></a></li><li><a class="dropdown__link" href="/docs/0.9.0/overview"><div class="labelWrapperDropdown_Mqbj">0.9.0</div></a></li><li><a class="dropdown__link" href="/docs/0.8.0/overview"><div class="labelWrapperDropdown_Mqbj">0.8.0</div></a></li><li><a class="dropdown__link" href="/docs/0.7.0/overview"><div class="labelWrapperDropdown_Mqbj">0.7.0</div></a></li><li><a class="dropdown__link" href="/docs/0.6.0/quick-start-guide"><div class="labelWrapperDropdown_Mqbj">0.6.0</div></a></li><li><a class="dropdown__link" href="/docs/0.5.3/quick-start-guide"><div class="labelWrapperDropdown_Mqbj">0.5.3</div></a></li><li><a class="dropdown__link" href="/docs/0.5.2/quick-start-guide"><div class="labelWrapperDropdown_Mqbj">0.5.2</div></a></li><li><a class="dropdown__link" href="/docs/0.5.1/quick-start-guide"><div class="labelWrapperDropdown_Mqbj">0.5.1</div></a></li><li><a class="dropdown__link" href="/docs/0.5.0/quick-start-guide"><div class="labelWrapperDropdown_Mqbj">0.5.0</div></a></li></ul></div><div class="navbar__item dropdown dropdown--hoverable dropdown--right"><a href="#" class="navbar__link downloadLinkDropdownHide_aDP3"><div class="labelWrapperDropdown_Mqbj"><span><svg viewBox="0 0 20 20" width="20" height="20" aria-hidden="true" class="iconLanguage_zID8"><path fill="currentColor" d="M19.753 10.909c-.624-1.707-2.366-2.726-4.661-2.726-.09 0-.176.002-.262.006l-.016-2.063 3.525-.607c.115-.019.133-.119.109-.231-.023-.111-.167-.883-.188-.976-.027-.131-.102-.127-.207-.109-.104.018-3.25.461-3.25.461l-.013-2.078c-.001-.125-.069-.158-.194-.156l-1.025.016c-.105.002-.164.049-.162.148l.033 2.307s-3.061.527-3.144.543c-.084.014-.17.053-.151.143.019.09.19 1.094.208 1.172.018.08.072.129.188.107l2.924-.504.035 2.018c-1.077.281-1.801.824-2.256 1.303-.768.807-1.207 1.887-1.207 2.963 0 1.586.971 2.529 2.328 2.695 3.162.387 5.119-3.06 5.769-4.715 1.097 1.506.256 4.354-2.094 5.98-.043.029-.098.129-.033.207l.619.756c.08.096.206.059.256.023 2.51-1.73 3.661-4.515 2.869-6.683zm-7.386 3.188c-.966-.121-.944-.914-.944-1.453 0-.773.327-1.58.876-2.156a3.21 3.21 0 011.229-.799l.082 4.277a2.773 2.773 0 01-1.243.131zm2.427-.553l.046-4.109c.084-.004.166-.01.252-.01.773 0 1.494.145 1.885.361.391.217-1.023 2.713-2.183 3.758zm-8.95-7.668a.196.196 0 00-.196-.145h-1.95a.194.194 0 00-.194.144L.008 16.916c-.017.051-.011.076.062.076h1.733c.075 0 .099-.023.114-.072l1.008-3.318h3.496l1.008 3.318c.016.049.039.072.113.072h1.734c.072 0 .078-.025.062-.076-.014-.05-3.083-9.741-3.494-11.04zm-2.618 6.318l1.447-5.25 1.447 5.25H3.226z"></path></svg><span>English</span></span><svg width="14" height="14" viewBox="0 0 14 14" fill="none" xmlns="http://www.w3.org/2000/svg"><g clip-path="url(#a)"><path d="M14 6.457a6.842 6.842 0 0 0-7-6.02 6.843 6.843 0 0 0-7 6.02v1.085a6.843 6.843 0 0 0 7 6.02 6.843 6.843 0 0 0 7-6.02V6.457Zm-1.094 0h-2.625a9.92 9.92 0 0 0-.376-2.222 6.65 6.65 0 0 0 1.531-.875 5.25 5.25 0 0 1 1.444 3.097h.026Zm-8.032 0a8.479 8.479 0 0 1 .324-1.872 7.376 7.376 0 0 0 3.63 0c.175.61.284 1.239.325 1.872h-4.28Zm4.305 1.085a8.391 8.391 0 0 1-.324 1.873 7.464 7.464 0 0 0-3.658 0 8.479 8.479 0 0 1-.323-1.873h4.305Zm.35-4.375A10.342 10.342 0 0 0 8.75 1.75c.627.194 1.218.49 1.75.875a5.748 5.748 0 0 1-.998.577l.027-.035ZM7.254 1.54A8.75 8.75 0 0 1 8.46 3.552c-.48.11-.97.165-1.461.167-.492-.001-.982-.057-1.461-.167.308-.722.715-1.4 1.207-2.012h.508ZM4.498 3.202a5.748 5.748 0 0 1-.998-.577 6.029 6.029 0 0 1 1.75-.875c-.294.46-.546.947-.753 1.452Zm-1.873.15c.47.358.984.652 1.531.874A9.625 9.625 0 0 0 3.78 6.45H1.155a5.25 5.25 0 0 1 1.47-3.098ZM1.12 7.541h2.625c.038.753.164 1.5.376 2.223a6.649 6.649 0 0 0-1.531.875 5.25 5.25 0 0 1-1.47-3.098Zm3.377 3.255c.207.506.459.992.753 1.453a6.03 6.03 0 0 1-1.75-.875c.312-.226.646-.419.997-.578Zm2.25 1.663a8.594 8.594 0 0 1-1.208-2.013 6.501 6.501 0 0 1 2.922 0 8.54 8.54 0 0 1-1.207 2.013h-.508Zm2.755-1.663c.367.156.716.35 1.042.578a6.338 6.338 0 0 1-1.75.875c.275-.464.512-.95.708-1.453Zm1.873-.148a6.647 6.647 0 0 0-1.531-.875 9.45 9.45 0 0 0 .376-2.223h2.625a5.25 5.25 0 0 1-1.47 3.098Z" fill="#1C1E21"></path></g><defs><clipPath id="a"><path fill="#fff" d="M0 0h14v14H0z"></path></clipPath></defs></svg></div></a><ul class="dropdown__menu"><li><a href="/docs/0.10.1/markers" target="_self" rel="noopener noreferrer" class="dropdown__link dropdown__link--active"><div class="labelWrapperDropdown_Mqbj">English</div></a></li><li><a href="/cn/docs/0.10.1/markers" target="_self" rel="noopener noreferrer" class="dropdown__link"><div class="labelWrapperDropdown_Mqbj">Chinese</div></a></li></ul></div><a href="https://github.com/apache/hudi" target="_blank" rel="noopener noreferrer" class="navbar__item navbar__link header-github-link" aria-label="GitHub repository"><div class="labelWrapperDropdown_Mqbj"></div></a><a href="https://twitter.com/ApacheHudi" target="_blank" rel="noopener noreferrer" class="navbar__item navbar__link header-twitter-link" aria-label="Hudi Twitter Handle"><div class="labelWrapperDropdown_Mqbj"></div></a><a href="https://join.slack.com/t/apache-hudi/shared_invite/zt-2ggm1fub8-_yt4Reu9djwqqVRFC7X49g" target="_blank" rel="noopener noreferrer" class="navbar__item navbar__link header-slack-link" aria-label="Hudi Slack Channel"><div class="labelWrapperDropdown_Mqbj"></div></a><a href="https://www.youtube.com/channel/UCs7AhE0BWaEPZSChrBR-Muw" target="_blank" rel="noopener noreferrer" class="navbar__item navbar__link header-youtube-link" aria-label="Hudi YouTube Channel"><div class="labelWrapperDropdown_Mqbj"></div></a><a href="https://www.linkedin.com/company/apache-hudi/?viewAsMember=true" target="_blank" rel="noopener noreferrer" class="navbar__item navbar__link header-linkedin-link" aria-label="Hudi Linkedin Page"><div class="labelWrapperDropdown_Mqbj"></div></a><div class="searchBox_fBfG"><div role="button" class="searchButton_g9-U" aria-label="Search"><span class="searchText_RI6l">Search</span><svg width="14" height="14" viewBox="0 0 14 14" fill="none" xmlns="http://www.w3.org/2000/svg"><circle cx="6.864" cy="6.864" r="5.243" stroke="#1C1E21" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"></circle><path d="m10.51 10.783 2.056 2.05" stroke="#1C1E21" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"></path></svg></div></div></div></div><div role="presentation" class="navbar-sidebar__backdrop"></div><div class="navbar-sidebar"><div class="navbar-sidebar__brand"><a class="navbar__brand" href="/"><div class="navbar__logo"><img src="/assets/images/hudi.png" alt="Apache Hudi" class="themedImage_TMUO themedImage--light_4Vu1"><img src="/assets/images/hudi.png" alt="Apache Hudi" class="themedImage_TMUO themedImage--dark_uzRr"></div></a><button type="button" class="clean-btn navbar-sidebar__close"><svg viewBox="0 0 15 15" width="21" height="21"><g stroke="var(--ifm-color-emphasis-600)" stroke-width="1.2"><path d="M.75.75l13.5 13.5M14.25.75L.75 14.25"></path></g></svg></button></div><div class="navbar-sidebar__items"><div class="navbar-sidebar__item menu"><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" href="/docs/overview"><div class="labelWrapperDropdown_Mqbj">Docs</div></a></li><li class="menu__list-item menu__list-item--collapsed"><a role="button" class="menu__link menu__link--sublist"><div class="labelWrapperDropdown_Mqbj">Learn</div></a></li><li class="menu__list-item menu__list-item--collapsed"><a role="button" class="menu__link menu__link--sublist"><div class="labelWrapperDropdown_Mqbj">Contribute</div></a></li><li class="menu__list-item menu__list-item--collapsed"><a role="button" class="menu__link menu__link--sublist"><div class="labelWrapperDropdown_Mqbj">Community</div></a></li><li class="menu__list-item"><a class="menu__link" href="/blog"><div class="labelWrapperDropdown_Mqbj">Blog</div></a></li><li class="menu__list-item"><a class="menu__link" href="/powered-by"><div class="labelWrapperDropdown_Mqbj">Who's Using</div></a></li><li class="menu__list-item"><a class="menu__link" href="/roadmap"><div class="labelWrapperDropdown_Mqbj">Roadmap</div></a></li><li class="menu__list-item"><a class="menu__link" href="/releases/download"><div class="labelWrapperDropdown_Mqbj">Download</div></a></li><li class="menu__list-item"><a role="button" class="menu__link menu__link--sublist"><div class="labelWrapperDropdown_Mqbj">Versions</div></a><ul style="display:block;overflow:visible;height:auto" class="menu__list"><li class="menu__list-item"><a class="menu__link" href="/docs/next/markers"><div class="labelWrapperDropdown_Mqbj">Current</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/markers"><div class="labelWrapperDropdown_Mqbj">0.14.1</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.14.0/markers"><div class="labelWrapperDropdown_Mqbj">0.14.0</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.13.1/markers"><div class="labelWrapperDropdown_Mqbj">0.13.1</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.13.0/markers"><div class="labelWrapperDropdown_Mqbj">0.13.0</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.12.3/markers"><div class="labelWrapperDropdown_Mqbj">0.12.3</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.12.2/markers"><div class="labelWrapperDropdown_Mqbj">0.12.2</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.12.1/markers"><div class="labelWrapperDropdown_Mqbj">0.12.1</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.12.0/markers"><div class="labelWrapperDropdown_Mqbj">0.12.0</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.11.1/markers"><div class="labelWrapperDropdown_Mqbj">0.11.1</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.11.0/markers"><div class="labelWrapperDropdown_Mqbj">0.11.0</div></a></li><li class="menu__list-item"><a aria-current="page" class="menu__link menu__link--active" href="/docs/0.10.1/markers"><div class="labelWrapperDropdown_Mqbj">0.10.1</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.10.0/markers"><div class="labelWrapperDropdown_Mqbj">0.10.0</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.9.0/overview"><div class="labelWrapperDropdown_Mqbj">0.9.0</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.8.0/overview"><div class="labelWrapperDropdown_Mqbj">0.8.0</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.7.0/overview"><div class="labelWrapperDropdown_Mqbj">0.7.0</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.6.0/quick-start-guide"><div class="labelWrapperDropdown_Mqbj">0.6.0</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.5.3/quick-start-guide"><div class="labelWrapperDropdown_Mqbj">0.5.3</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.5.2/quick-start-guide"><div class="labelWrapperDropdown_Mqbj">0.5.2</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.5.1/quick-start-guide"><div class="labelWrapperDropdown_Mqbj">0.5.1</div></a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.5.0/quick-start-guide"><div class="labelWrapperDropdown_Mqbj">0.5.0</div></a></li></ul></li><li class="menu__list-item menu__list-item--collapsed"><a role="button" class="menu__link menu__link--sublist"><div class="labelWrapperDropdown_Mqbj"><span><svg viewBox="0 0 20 20" width="20" height="20" aria-hidden="true" class="iconLanguage_zID8"><path fill="currentColor" d="M19.753 10.909c-.624-1.707-2.366-2.726-4.661-2.726-.09 0-.176.002-.262.006l-.016-2.063 3.525-.607c.115-.019.133-.119.109-.231-.023-.111-.167-.883-.188-.976-.027-.131-.102-.127-.207-.109-.104.018-3.25.461-3.25.461l-.013-2.078c-.001-.125-.069-.158-.194-.156l-1.025.016c-.105.002-.164.049-.162.148l.033 2.307s-3.061.527-3.144.543c-.084.014-.17.053-.151.143.019.09.19 1.094.208 1.172.018.08.072.129.188.107l2.924-.504.035 2.018c-1.077.281-1.801.824-2.256 1.303-.768.807-1.207 1.887-1.207 2.963 0 1.586.971 2.529 2.328 2.695 3.162.387 5.119-3.06 5.769-4.715 1.097 1.506.256 4.354-2.094 5.98-.043.029-.098.129-.033.207l.619.756c.08.096.206.059.256.023 2.51-1.73 3.661-4.515 2.869-6.683zm-7.386 3.188c-.966-.121-.944-.914-.944-1.453 0-.773.327-1.58.876-2.156a3.21 3.21 0 011.229-.799l.082 4.277a2.773 2.773 0 01-1.243.131zm2.427-.553l.046-4.109c.084-.004.166-.01.252-.01.773 0 1.494.145 1.885.361.391.217-1.023 2.713-2.183 3.758zm-8.95-7.668a.196.196 0 00-.196-.145h-1.95a.194.194 0 00-.194.144L.008 16.916c-.017.051-.011.076.062.076h1.733c.075 0 .099-.023.114-.072l1.008-3.318h3.496l1.008 3.318c.016.049.039.072.113.072h1.734c.072 0 .078-.025.062-.076-.014-.05-3.083-9.741-3.494-11.04zm-2.618 6.318l1.447-5.25 1.447 5.25H3.226z"></path></svg><span>Languages</span></span></div></a></li><li class="menu__list-item"><a href="https://github.com/apache/hudi" target="_blank" rel="noopener noreferrer" class="menu__link header-github-link" aria-label="GitHub repository"><div class="labelWrapperDropdown_Mqbj"></div></a></li><li class="menu__list-item"><a href="https://twitter.com/ApacheHudi" target="_blank" rel="noopener noreferrer" class="menu__link header-twitter-link" aria-label="Hudi Twitter Handle"><div class="labelWrapperDropdown_Mqbj"></div></a></li><li class="menu__list-item"><a href="https://join.slack.com/t/apache-hudi/shared_invite/zt-2ggm1fub8-_yt4Reu9djwqqVRFC7X49g" target="_blank" rel="noopener noreferrer" class="menu__link header-slack-link" aria-label="Hudi Slack Channel"><div class="labelWrapperDropdown_Mqbj"></div></a></li><li class="menu__list-item"><a href="https://www.youtube.com/channel/UCs7AhE0BWaEPZSChrBR-Muw" target="_blank" rel="noopener noreferrer" class="menu__link header-youtube-link" aria-label="Hudi YouTube Channel"><div class="labelWrapperDropdown_Mqbj"></div></a></li><li class="menu__list-item"><a href="https://www.linkedin.com/company/apache-hudi/?viewAsMember=true" target="_blank" rel="noopener noreferrer" class="menu__link header-linkedin-link" aria-label="Hudi Linkedin Page"><div class="labelWrapperDropdown_Mqbj"></div></a></li></ul></div><div class="navbar-sidebar__item menu"><button type="button" class="clean-btn navbar-sidebar__back">← Back to main menu</button></div></div></div></nav><div class="main-wrapper docs-wrapper docs-doc-page"><div class="docPage_GMj9"><button aria-label="Scroll back to top" class="clean-btn theme-back-to-top-button backToTopButton_i9tI" type="button"></button><aside class="docSidebarContainer_k0Pq"><div class="sidebar_a3j0"><nav class="menu thin-scrollbar menu_cyFh menuWithAnnouncementBar_+O1J"><ul class="theme-doc-sidebar-menu menu__list"><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-1 menu__list-item"><a class="menu__link" href="/docs/0.10.1/overview">Overview</a></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist hasHref_TwRn" href="/docs/0.10.1/quick-start-guide">Quick Start</a></div><ul style="display:block;overflow:visible;height:auto" class="menu__list"><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/quick-start-guide">Spark Guide</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/flink-quick-start-guide">Flink Guide</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/docker_demo">Docker Demo</a></li></ul></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist hasHref_TwRn" href="/docs/0.10.1/timeline">Concepts</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist hasHref_TwRn" href="/docs/0.10.1/table_management">How To</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--active hasHref_TwRn" href="/docs/0.10.1/migration_guide">Services</a></div><ul style="display:block;overflow:visible;height:auto" class="menu__list"><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/migration_guide">Bootstrapping</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/compaction">Compaction</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/clustering">Clustering</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/hoodie_cleaner">Cleaning</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/transforms">Transformers</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link menu__link--active" aria-current="page" tabindex="0" href="/docs/0.10.1/markers">Marker Mechanism</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/file_sizing">File Sizing</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/snapshot_exporter">Exporter</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/docs/0.10.1/precommit_validator">Data Quality</a></li></ul></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-1 menu__list-item"><a class="menu__link" href="/docs/0.10.1/configurations">Configurations</a></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist hasHref_TwRn" href="/docs/0.10.1/query_engine_setup">Guides</a></div></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-1 menu__list-item"><a class="menu__link" href="/docs/0.10.1/use_cases">Use Cases</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-1 menu__list-item"><a class="menu__link" href="/docs/0.10.1/faq">FAQs</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-1 menu__list-item"><a class="menu__link" href="/docs/0.10.1/privacy">Privacy Policy</a></li></ul></nav></div></aside><main class="docMainContainer_Q970"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_zHA2"><div class="theme-doc-version-banner alert alert--warning margin-bottom--md" role="alert"><div>This is documentation for <!-- -->Apache Hudi<!-- --> <b>0.10.1</b>, which is no longer actively maintained.</div><div class="margin-top--md">For up-to-date documentation, see the <b><a href="/docs/markers">latest version</a></b> (<!-- -->0.14.1<!-- -->).</div></div><div class="docItemContainer_oiyr"><article><span class="theme-doc-version-badge badge badge--secondary">Version: <!-- -->0.10.1</span><div class="tocCollapsible_aw-L theme-doc-toc-mobile tocMobile_Tx6Y"><button type="button" class="clean-btn tocCollapsibleButton_zr6a">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Marker Mechanism</h1></header><h2 class="anchor anchorWithStickyNavbar_y2LR" id="purpose-of-markers">Purpose of Markers<a class="hash-link" href="#purpose-of-markers" title="Direct link to heading"></a></h2><p>A write operation can fail before it completes, leaving partial or corrupt data files on storage. Markers are used to track |
| and cleanup any partial or failed write operations. As a write operation begins, a marker is created indicating |
| that a file write is in progress. When the write commit succeeds, the marker is deleted. If a write operation fails part |
| way through, a marker is left behind which indicates that the file is incomplete. Two important operations that use markers include: </p><ul><li><strong>Removing duplicate/partial data files</strong>: <ul><li>In Spark, the Hudi write client delegates the data file writing to multiple executors. One executor can fail the task, |
| leaving partial data files written, and Spark retries the task in this case until it succeeds. </li><li>When speculative execution is enabled, there can also be multiple successful attempts at writing out the same data |
| into different files, only one of which is finally handed to the Spark driver process for committing. |
| The markers help efficiently identify the partial data files written, which contain duplicate data compared to the data |
| files written by the successful trial later, and these duplicate data files are cleaned up when the commit is finalized.</li></ul></li><li><strong>Rolling back failed commits</strong>: If a write operation fails, the next write client will roll back the failed commit before proceeding with the new write. The rollback is done with the help of markers to identify the data files written as part of the failed commit.</li></ul><p>If we did not have markers to track the per-commit data files, we would have to list all files in the file system, |
| correlate that with the files seen in timeline and then delete the ones that belong to partial write failures. |
| As you could imagine, this would be very costly in a very large installation of a datalake.</p><h2 class="anchor anchorWithStickyNavbar_y2LR" id="marker-structure">Marker structure<a class="hash-link" href="#marker-structure" title="Direct link to heading"></a></h2><p>Each marker entry is composed of three parts, the data file name, |
| the marker extension (<code>.marker</code>), and the I/O operation created the file (<code>CREATE</code> - inserts, <code>MERGE</code> - updates/deletes, |
| or <code>APPEND</code> - either). For example, the marker <code>91245ce3-bb82-4f9f-969e-343364159174-0_140-579-0_20210820173605.parquet.marker.CREATE</code> indicates |
| that the corresponding data file is <code>91245ce3-bb82-4f9f-969e-343364159174-0_140-579-0_20210820173605.parquet</code> and the I/O type is <code>CREATE</code>.</p><h2 class="anchor anchorWithStickyNavbar_y2LR" id="marker-writing-options">Marker Writing Options<a class="hash-link" href="#marker-writing-options" title="Direct link to heading"></a></h2><p>There are two ways to write Markers: </p><ul><li>Directly writing markers to storage, which is a legacy configuration.</li><li>Writing markers to the Timeline Server which batches marker requests before writing them to storage (Default). This option improves write performance of large files as described below.</li></ul><h3 class="anchor anchorWithStickyNavbar_y2LR" id="direct-write-markers">Direct Write Markers<a class="hash-link" href="#direct-write-markers" title="Direct link to heading"></a></h3><p>Directly writing to storage creates a new marker file corresponding to each data file, with the marker filename as described above. |
| The marker file does not have any content, i.e., empty. Each marker file is written to storage in the same directory |
| hierarchy, i.e., commit instant and partition path, under a temporary folder <code>.hoodie/.temp</code> under the base path of the Hudi table. |
| For example, the figure below shows one example of the marker files created and the corresponding data files when writing |
| data to the Hudi table. When getting or deleting all the marker file paths, the mechanism first lists all the paths |
| under the temporary folder, <code>.hoodie/.temp/<commit_instant></code>, and then does the operation.</p><p><img alt="An example of marker and data files in direct marker file mechanism" src="/assets/images/direct-marker-file-mechanism-b97b82f80430598f1d6a9b96521bb1a0.png"></p><p>While it's much efficient over scanning the entire table for uncommitted data files, as the number of data files to write |
| increases, so does the number of marker files to create. For large writes which need to write significant number of data |
| files, e.g., 10K or more, this can create performance bottlenecks for cloud storage such as AWS S3. In AWS S3, each |
| file create and delete call triggers an HTTP request and there is <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/optimizing-performance.html" target="_blank" rel="noopener noreferrer">rate-limiting</a> |
| on how many requests can be processed per second per prefix in a bucket. When the number of data files to write concurrently |
| and the number of marker files is huge, the marker file operations could take up non-trivial time during the write operation, |
| sometimes on the order of a few minutes or more. </p><h3 class="anchor anchorWithStickyNavbar_y2LR" id="timeline-server-markers-default">Timeline Server Markers (Default)<a class="hash-link" href="#timeline-server-markers-default" title="Direct link to heading"></a></h3><p>To address the performance bottleneck due to rate-limiting of AWS S3 explained above, we introduce a new marker mechanism |
| leveraging the timeline server, which optimizes the marker-related latency for storage with non-trivial file I/O latency. |
| In the diagram below you can see the timeline-server-based marker mechanism delegates the marker creation and other marker-related |
| operations from individual executors to the timeline server for centralized processing. The timeline server batches the |
| marker creation requests and writes the markers to a bounded set of files in the file system at configurable batch intervals (default 50ms). |
| In this way, the number of actual file operations and latency related to markers can be significantly reduced even with |
| a huge number of data files, leading to improved performance of large writes.</p><p><img alt="Timeline-server-based marker mechanism" src="/assets/images/timeline-server-based-marker-mechanism-11d616800a7a241382c8a4ed647515a6.png"></p><p>Each marker creation request is handled asynchronously in the Javalin timeline server and queued before processing. |
| For every batch interval, the timeline server pulls the pending marker creation requests from the queue and |
| writes all markers to the next file in a round robin fashion. Inside the timeline server, such batch processing is |
| multi-threaded, designed and implemented to guarantee consistency and correctness. Both the batch interval and the batch |
| concurrency can be configured through the write options.</p><p><img alt="Batched processing of marker creation requests" src="/assets/images/batched-marker-creation-e8455c544f3b11ceed810b663df59f7f.png"></p><p>Note that the worker thread always checks whether the marker has already been created by comparing the marker name from |
| the request with the memory copy of all markers maintained at the timeline server. The underlying files storing the |
| markers are only read upon the first marker request (lazy loading). The responses of requests are only sent back once the |
| new markers are flushed to the files, so that in the case of the timeline server failure, the timeline server can recover |
| the already created markers. These ensure consistency between storage and the in-memory copy, and improve the performance |
| of processing marker requests.</p><p><strong>NOTE:</strong> Timeline based markers are not yet supported for HDFS, however, users may barely notice performance challenges |
| with direct markers because the file system metadata is efficiently cached in memory and doesn't face the same rate-limiting as S3.</p><h2 class="anchor anchorWithStickyNavbar_y2LR" id="marker-configuration-parameters">Marker Configuration Parameters<a class="hash-link" href="#marker-configuration-parameters" title="Direct link to heading"></a></h2><table><thead><tr><th>Property Name</th><th>Default</th><th align="center">Meaning</th></tr></thead><tbody><tr><td><code>hoodie.write.markers.type</code></td><td>timeline_server_based</td><td align="center">Marker type to use. Two modes are supported: (1) <code>direct</code>: individual marker file corresponding to each data file is directly created by the executor; (2) <code>timeline_server_based</code>: marker operations are all handled at the timeline service which serves as a proxy. New marker entries are batch processed and stored in a limited number of underlying files for efficiency.</td></tr><tr><td><code>hoodie.markers.timeline_server_based.batch.num_threads</code></td><td>20</td><td align="center">Number of threads to use for batch processing marker creation requests at the timeline server.</td></tr><tr><td><code>hoodie.markers.timeline_server_based.batch.interval_ms</code></td><td>50</td><td align="center">The batch interval in milliseconds for marker creation batch processing.</td></tr></tbody></table></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/apache/hudi/tree/asf-site/website/versioned_docs/version-0.10.1/markers.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_mS5F" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_mt2f"></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><div class="pagination-nav__item"><a class="pagination-nav__link" href="/docs/0.10.1/transforms"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Transformers</div></a></div><div class="pagination-nav__item pagination-nav__item--next"><a class="pagination-nav__link" href="/docs/0.10.1/file_sizing"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">File Sizing</div></a></div></nav></div></div><div class="col col--3"><div class="tableOfContents_vrFS thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#purpose-of-markers" class="table-of-contents__link toc-highlight">Purpose of Markers</a></li><li><a href="#marker-structure" class="table-of-contents__link toc-highlight">Marker structure</a></li><li><a href="#marker-writing-options" class="table-of-contents__link toc-highlight">Marker Writing Options</a><ul><li><a href="#direct-write-markers" class="table-of-contents__link toc-highlight">Direct Write Markers</a></li><li><a href="#timeline-server-markers-default" class="table-of-contents__link toc-highlight">Timeline Server Markers (Default)</a></li></ul></li><li><a href="#marker-configuration-parameters" class="table-of-contents__link toc-highlight">Marker Configuration Parameters</a></li></ul></div></div></div></div></main></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">About</div><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/blog/2021/07/21/streaming-data-lake-platform">Our Vision</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/concepts">Concepts</a></li><li class="footer__item"><a class="footer__link-item" href="/community/team">Team</a></li><li class="footer__item"><a class="footer__link-item" href="/releases/release-0.14.1">Releases</a></li><li class="footer__item"><a class="footer__link-item" href="/releases/download">Download</a></li><li class="footer__item"><a class="footer__link-item" href="/powered-by">Who's Using</a></li></ul></div><div class="col footer__col"><div class="footer__title">Learn</div><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/docs/quick-start-guide">Quick Start</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/docker_demo">Docker Demo</a></li><li class="footer__item"><a class="footer__link-item" href="/blog">Blog</a></li><li class="footer__item"><a class="footer__link-item" href="/talks">Talks</a></li><li class="footer__item"><a class="footer__link-item" href="/videos">Video Guides</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/faq">FAQ</a></li><li class="footer__item"><a href="https://cwiki.apache.org/confluence/display/HUDI" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Technical Wiki<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li></ul></div><div class="col footer__col"><div class="footer__title">Hudi On Cloud</div><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/docs/s3_hoodie">AWS</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/gcs_hoodie">Google Cloud</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/oss_hoodie">Alibaba Cloud</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/azure_hoodie">Microsoft Azure</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/cos_hoodie">Tencent Cloud</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/ibm_cos_hoodie">IBM Cloud</a></li></ul></div><div class="col footer__col"><div class="footer__title">Community</div><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/community/get-involved">Get Involved</a></li><li class="footer__item"><a href="https://join.slack.com/t/apache-hudi/shared_invite/zt-2ggm1fub8-_yt4Reu9djwqqVRFC7X49g" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Slack<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="https://github.com/apache/hudi" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>GitHub<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="https://twitter.com/ApacheHudi" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Twitter<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="https://www.youtube.com/channel/UCs7AhE0BWaEPZSChrBR-Muw" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>YouTube<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="https://www.linkedin.com/company/apache-hudi/?viewAsMember=true" target="_blank" rel="noopener noreferrer" class="footer__link-item"><span>Linkedin<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_wgqa"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a></li><li class="footer__item"><a href="mailto:dev-subscribe@hudi.apache.org?Subject=SubscribeToHudi" target="_blank" rel="noopener noreferrer" class="footer__link-item">Mailing List</a></li></ul></div><div class="col footer__col"><div class="footer__title">Apache</div><ul class="footer__items"><li class="footer__item"><a href="https://www.apache.org/events/current-event" target="_blank" rel="noopener noreferrer" class="footer__link-item">Events</a></li><li class="footer__item"><a href="https://www.apache.org/foundation/thanks.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Thanks</a></li><li class="footer__item"><a href="https://www.apache.org/licenses" target="_blank" rel="noopener noreferrer" class="footer__link-item">License</a></li><li class="footer__item"><a href="https://www.apache.org/security" target="_blank" rel="noopener noreferrer" class="footer__link-item">Security</a></li><li class="footer__item"><a href="https://www.apache.org/foundation/sponsorship.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Sponsorship</a></li><li class="footer__item"><a href="https://www.apache.org" target="_blank" rel="noopener noreferrer" class="footer__link-item">Foundation</a></li></ul></div></div><div class="footer__bottom text--center"><div class="margin-bottom--sm"><a href="https://hudi.apache.org/" target="_blank" rel="noopener noreferrer" class="footerLogoLink_SRtH"><img src="/assets/images/logo-big.png" alt="Apache Hudi™" class="themedImage_TMUO themedImage--light_4Vu1 footer__logo"><img src="/assets/images/logo-big.png" alt="Apache Hudi™" class="themedImage_TMUO themedImage--dark_uzRr footer__logo"></a></div><div class="footer__copyright">Copyright © 2021 <a href="https://apache.org">The Apache Software Foundation</a>, Licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0"> Apache License, Version 2.0</a>. <br>Hudi, Apache and the Apache feather logo are trademarks of The Apache Software Foundation.</div></div></div></footer></div> |
| <script src="/assets/js/runtime~main.f21bf244.js"></script> |
| <script src="/assets/js/main.f75b8228.js"></script> |
| </body> |
| </html> |
