docs/dev/format/Versioning.html - arrow-site - Git at Google


 <!DOCTYPE html>


 <html lang="en" data-content_root="../" >

   <head>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" />

     <title>Format Versioning and Stability &#8212; Apache Arrow v23.0.0.dev77</title>


   <script data-cfasync="false">
     document.documentElement.dataset.mode = localStorage.getItem("mode") || "";
     document.documentElement.dataset.theme = localStorage.getItem("theme") || "";
   </script>
   <!--
     this give us a css class that will be invisible only if js is disabled
   -->
   <noscript>
     <style>
       .pst-js-only { display: none !important; }

     </style>
   </noscript>

   <!-- Loaded before other Sphinx assets -->
   <link href="../_static/styles/theme.css?digest=8878045cc6db502f8baf" rel="stylesheet" />
 <link href="../_static/styles/pydata-sphinx-theme.css?digest=8878045cc6db502f8baf" rel="stylesheet" />

     <link rel="stylesheet" type="text/css" href="../_static/pygments.css?v=03e43079" />
     <link rel="stylesheet" type="text/css" href="../_static/copybutton.css?v=76b2166b" />
     <link rel="stylesheet" type="text/css" href="../_static/sphinx-design.min.css?v=95c83b7e" />
     <link rel="stylesheet" type="text/css" href="../_static/theme_overrides.css?v=8dcd28dc" />

   <!-- So that users can add custom icons -->
   <script src="../_static/scripts/fontawesome.js?digest=8878045cc6db502f8baf"></script>
   <!-- Pre-loaded scripts that we'll load fully later -->
   <link rel="preload" as="script" href="../_static/scripts/bootstrap.js?digest=8878045cc6db502f8baf" />
 <link rel="preload" as="script" href="../_static/scripts/pydata-sphinx-theme.js?digest=8878045cc6db502f8baf" />

     <script src="../_static/documentation_options.js?v=d788322b"></script>
     <script src="../_static/doctools.js?v=9bcbadda"></script>
     <script src="../_static/sphinx_highlight.js?v=dc90522c"></script>
     <script src="../_static/clipboard.min.js?v=a7894cd8"></script>
     <script src="../_static/copybutton.js?v=3bb21c8c"></script>
     <script src="../_static/design-tabs.js?v=f930bc37"></script>
     <script>DOCUMENTATION_OPTIONS.pagename = 'format/Versioning';</script>
     <script>
         DOCUMENTATION_OPTIONS.theme_version = '0.16.1';
         DOCUMENTATION_OPTIONS.theme_switcher_json_url = '/docs/_static/versions.json';
         DOCUMENTATION_OPTIONS.theme_switcher_version_match = 'dev/';
         DOCUMENTATION_OPTIONS.show_version_warning_banner =
             true;
         </script>
     <link rel="canonical" href="https://arrow.apache.org/docs/format/Versioning.html" />
     <link rel="icon" href="../_static/favicon.ico"/>
     <link rel="index" title="Index" href="../genindex.html" />
     <link rel="search" title="Search" href="../search.html" />
     <link rel="next" title="Changing the Apache Arrow Format Specification" href="Changing.html" />
     <link rel="prev" title="Arrow Columnar Format" href="Columnar.html" />

   <meta name="viewport" content="width=device-width, initial-scale=1"/>
   <meta name="docsearch:language" content="en"/>
   <meta name="docsearch:version" content="23.0.0.dev77" />

   <!-- Matomo -->
   <script>
     var _paq = window._paq = window._paq || [];
     /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
     /* We explicitly disable cookie tracking to avoid privacy issues */
     _paq.push(['disableCookies']);
     _paq.push(['trackPageView']);
     _paq.push(['enableLinkTracking']);
     (function() {
       var u="https://analytics.apache.org/";
       _paq.push(['setTrackerUrl', u+'matomo.php']);
       _paq.push(['setSiteId', '20']);
       var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
       g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
     })();
   </script>
   <!-- End Matomo Code -->

   </head>


   <body data-bs-spy="scroll" data-bs-target=".bd-toc-nav" data-offset="180" data-bs-root-margin="0px 0px -60%" data-default-mode="">


   <div id="pst-skip-link" class="skip-link d-print-none"><a href="#main-content">Skip to main content</a></div>

   <div id="pst-scroll-pixel-helper"></div>

   <button type="button" class="btn rounded-pill" id="pst-back-to-top">
     <i class="fa-solid fa-arrow-up"></i>Back to top</button>


   <dialog id="pst-search-dialog">

 <form class="bd-search d-flex align-items-center"
       action="../search.html"
       method="get">
   <i class="fa-solid fa-magnifying-glass"></i>
   <input type="search"
          class="form-control"
          name="q"
          placeholder="Search the docs ..."
          aria-label="Search the docs ..."
          autocomplete="off"
          autocorrect="off"
          autocapitalize="off"
          spellcheck="false"/>
   <span class="search-button__kbd-shortcut"><kbd class="kbd-shortcut__modifier">Ctrl</kbd>+<kbd>K</kbd></span>
 </form>
   </dialog>

   <div class="pst-async-banner-revealer d-none">
   <aside id="bd-header-version-warning" class="d-none d-print-none" aria-label="Version warning"></aside>
 </div>


     <header class="bd-header navbar navbar-expand-lg bd-navbar d-print-none">
 <div class="bd-header__inner bd-page-width">
   <button class="pst-navbar-icon sidebar-toggle primary-toggle" aria-label="Site navigation">
     <span class="fa-solid fa-bars"></span>
   </button>


   <div class=" navbar-header-items__start">

       <div class="navbar-item">


 <a class="navbar-brand logo" href="../index.html">


     <img src="../_static/arrow.png" class="logo__image only-light" alt="Apache Arrow v23.0.0.dev77 - Home"/>
     <img src="../_static/arrow-dark.png" class="logo__image only-dark pst-js-only" alt="Apache Arrow v23.0.0.dev77 - Home"/>


 </a></div>

   </div>

   <div class=" navbar-header-items">

     <div class="me-auto navbar-header-items__center">

         <div class="navbar-item">
 <nav>
   <ul class="bd-navbar-elements navbar-nav">

 <li class="nav-item current active">
   <a class="nav-link nav-internal" href="index.html">
     Specifications
   </a>
 </li>


 <li class="nav-item ">
   <a class="nav-link nav-internal" href="../developers/index.html">
     Development
   </a>
 </li>


 <li class="nav-item ">
   <a class="nav-link nav-internal" href="../implementations.html">
     Implementations
   </a>
 </li>

   </ul>
 </nav></div>

     </div>


     <div class="navbar-header-items__end">

         <div class="navbar-item navbar-persistent--container">


 <button class="btn search-button-field search-button__button pst-js-only" title="Search" aria-label="Search" data-bs-placement="bottom" data-bs-toggle="tooltip">
  <i class="fa-solid fa-magnifying-glass"></i>
  <span class="search-button__default-text">Search</span>
  <span class="search-button__kbd-shortcut"><kbd class="kbd-shortcut__modifier">Ctrl</kbd>+<kbd class="kbd-shortcut__modifier">K</kbd></span>
 </button>
         </div>


         <div class="navbar-item"><div class="kapa-ai-bot">
     <script
         async
         src="https://widget.kapa.ai/kapa-widget.bundle.js"
         data-website-id="9db461d5-ac77-4b3f-a5c5-75efa78339d2"
         data-project-name="Apache Arrow"
         data-project-color="#000000"
         data-project-logo="https://arrow.apache.org/img/arrow-logo_chevrons_white-txt_black-bg.png"
         data-modal-disclaimer="This is a custom LLM with access to all [Arrow documentation](https://arrow.apache.org/docs/). Please include the language you are using in your question, e.g., Python, C++, Java, R, etc."
         data-consent-required="true"
         data-user-analytics-cookie-enabled="false"
         data-consent-screen-disclaimer="By clicking &quot;I agree, let's chat&quot;, you consent to the use of the AI assistant in accordance with kapa.ai's [Privacy Policy](https://www.kapa.ai/content/privacy-policy). This service uses reCAPTCHA, which requires your consent to Google's [Privacy Policy](https://policies.google.com/privacy) and [Terms of Service](https://policies.google.com/terms). By proceeding, you explicitly agree to both kapa.ai's and Google's privacy policies."
     ></script>

 </div>

 </div>

         <div class="navbar-item">
 <div class="version-switcher__container dropdown pst-js-only">
   <button id="pst-version-switcher-button-2"
     type="button"
     class="version-switcher__button btn btn-sm dropdown-toggle"
     data-bs-toggle="dropdown"
     aria-haspopup="listbox"
     aria-controls="pst-version-switcher-list-2"
     aria-label="Version switcher list"
   >
     Choose version  <!-- this text may get changed later by javascript -->
     <span class="caret"></span>
   </button>
   <div id="pst-version-switcher-list-2"
     class="version-switcher__menu dropdown-menu list-group-flush py-0"
     role="listbox" aria-labelledby="pst-version-switcher-button-2">
     <!-- dropdown will be populated by javascript on page load -->
   </div>
 </div></div>

         <div class="navbar-item">

 <button class="btn btn-sm nav-link pst-navbar-icon theme-switch-button pst-js-only" aria-label="Color mode" data-bs-title="Color mode"  data-bs-placement="bottom" data-bs-toggle="tooltip">
   <i class="theme-switch fa-solid fa-sun                fa-lg" data-mode="light" title="Light"></i>
   <i class="theme-switch fa-solid fa-moon               fa-lg" data-mode="dark"  title="Dark"></i>
   <i class="theme-switch fa-solid fa-circle-half-stroke fa-lg" data-mode="auto"  title="System Settings"></i>
 </button></div>

         <div class="navbar-item"><ul class="navbar-icon-links"
     aria-label="Icon Links">
         <li class="nav-item">


           <a href="https://github.com/apache/arrow" title="GitHub" class="nav-link pst-navbar-icon" rel="noopener" target="_blank" data-bs-toggle="tooltip" data-bs-placement="bottom"><i class="fa-brands fa-square-github fa-lg" aria-hidden="true"></i>
             <span class="sr-only">GitHub</span></a>
         </li>
         <li class="nav-item">


           <a href="https://www.linkedin.com/company/apache-arrow/" title="LinkedIn" class="nav-link pst-navbar-icon" rel="noopener" target="_blank" data-bs-toggle="tooltip" data-bs-placement="bottom"><i class="fa-brands fa-linkedin fa-lg" aria-hidden="true"></i>
             <span class="sr-only">LinkedIn</span></a>
         </li>
         <li class="nav-item">


           <a href="https://bsky.app/profile/arrow.apache.org" title="BlueSky" class="nav-link pst-navbar-icon" rel="noopener" target="_blank" data-bs-toggle="tooltip" data-bs-placement="bottom"><i class="fa-brands fa-bluesky fa-lg" aria-hidden="true"></i>
             <span class="sr-only">BlueSky</span></a>
         </li>
 </ul></div>

     </div>

   </div>


     <div class="navbar-persistent--mobile">

 <button class="btn search-button-field search-button__button pst-js-only" title="Search" aria-label="Search" data-bs-placement="bottom" data-bs-toggle="tooltip">
  <i class="fa-solid fa-magnifying-glass"></i>
  <span class="search-button__default-text">Search</span>
  <span class="search-button__kbd-shortcut"><kbd class="kbd-shortcut__modifier">Ctrl</kbd>+<kbd class="kbd-shortcut__modifier">K</kbd></span>
 </button>
     </div>


     <button class="pst-navbar-icon sidebar-toggle secondary-toggle" aria-label="On this page">
       <span class="fa-solid fa-outdent"></span>
     </button>

 </div>

     </header>


   <div class="bd-container">
     <div class="bd-container__inner bd-page-width">


       <dialog id="pst-primary-sidebar-modal"></dialog>
       <div id="pst-primary-sidebar" class="bd-sidebar-primary bd-sidebar">


   <div class="sidebar-header-items sidebar-primary__section">


       <div class="sidebar-header-items__center">


             <div class="navbar-item">
 <nav>
   <ul class="bd-navbar-elements navbar-nav">

 <li class="nav-item current active">
   <a class="nav-link nav-internal" href="index.html">
     Specifications
   </a>
 </li>


 <li class="nav-item ">
   <a class="nav-link nav-internal" href="../developers/index.html">
     Development
   </a>
 </li>


 <li class="nav-item ">
   <a class="nav-link nav-internal" href="../implementations.html">
     Implementations
   </a>
 </li>

   </ul>
 </nav></div>


       </div>


       <div class="sidebar-header-items__end">

           <div class="navbar-item"><div class="kapa-ai-bot">
     <script
         async
         src="https://widget.kapa.ai/kapa-widget.bundle.js"
         data-website-id="9db461d5-ac77-4b3f-a5c5-75efa78339d2"
         data-project-name="Apache Arrow"
         data-project-color="#000000"
         data-project-logo="https://arrow.apache.org/img/arrow-logo_chevrons_white-txt_black-bg.png"
         data-modal-disclaimer="This is a custom LLM with access to all [Arrow documentation](https://arrow.apache.org/docs/). Please include the language you are using in your question, e.g., Python, C++, Java, R, etc."
         data-consent-required="true"
         data-user-analytics-cookie-enabled="false"
         data-consent-screen-disclaimer="By clicking &quot;I agree, let's chat&quot;, you consent to the use of the AI assistant in accordance with kapa.ai's [Privacy Policy](https://www.kapa.ai/content/privacy-policy). This service uses reCAPTCHA, which requires your consent to Google's [Privacy Policy](https://policies.google.com/privacy) and [Terms of Service](https://policies.google.com/terms). By proceeding, you explicitly agree to both kapa.ai's and Google's privacy policies."
     ></script>

 </div>

 </div>

           <div class="navbar-item">
 <div class="version-switcher__container dropdown pst-js-only">
   <button id="pst-version-switcher-button-3"
     type="button"
     class="version-switcher__button btn btn-sm dropdown-toggle"
     data-bs-toggle="dropdown"
     aria-haspopup="listbox"
     aria-controls="pst-version-switcher-list-3"
     aria-label="Version switcher list"
   >
     Choose version  <!-- this text may get changed later by javascript -->
     <span class="caret"></span>
   </button>
   <div id="pst-version-switcher-list-3"
     class="version-switcher__menu dropdown-menu list-group-flush py-0"
     role="listbox" aria-labelledby="pst-version-switcher-button-3">
     <!-- dropdown will be populated by javascript on page load -->
   </div>
 </div></div>

           <div class="navbar-item">

 <button class="btn btn-sm nav-link pst-navbar-icon theme-switch-button pst-js-only" aria-label="Color mode" data-bs-title="Color mode"  data-bs-placement="bottom" data-bs-toggle="tooltip">
   <i class="theme-switch fa-solid fa-sun                fa-lg" data-mode="light" title="Light"></i>
   <i class="theme-switch fa-solid fa-moon               fa-lg" data-mode="dark"  title="Dark"></i>
   <i class="theme-switch fa-solid fa-circle-half-stroke fa-lg" data-mode="auto"  title="System Settings"></i>
 </button></div>

           <div class="navbar-item"><ul class="navbar-icon-links"
     aria-label="Icon Links">
         <li class="nav-item">


           <a href="https://github.com/apache/arrow" title="GitHub" class="nav-link pst-navbar-icon" rel="noopener" target="_blank" data-bs-toggle="tooltip" data-bs-placement="bottom"><i class="fa-brands fa-square-github fa-lg" aria-hidden="true"></i>
             <span class="sr-only">GitHub</span></a>
         </li>
         <li class="nav-item">


           <a href="https://www.linkedin.com/company/apache-arrow/" title="LinkedIn" class="nav-link pst-navbar-icon" rel="noopener" target="_blank" data-bs-toggle="tooltip" data-bs-placement="bottom"><i class="fa-brands fa-linkedin fa-lg" aria-hidden="true"></i>
             <span class="sr-only">LinkedIn</span></a>
         </li>
         <li class="nav-item">


           <a href="https://bsky.app/profile/arrow.apache.org" title="BlueSky" class="nav-link pst-navbar-icon" rel="noopener" target="_blank" data-bs-toggle="tooltip" data-bs-placement="bottom"><i class="fa-brands fa-bluesky fa-lg" aria-hidden="true"></i>
             <span class="sr-only">BlueSky</span></a>
         </li>
 </ul></div>

       </div>

   </div>

     <div class="sidebar-primary-items__start sidebar-primary__section">
         <div class="sidebar-primary-item">
 <nav class="bd-docs-nav bd-links"
      aria-label="Section Navigation">
   <p class="bd-links__title" role="heading" aria-level="1">Section Navigation</p>
   <div class="bd-toc-item navbar-nav"><ul class="current nav bd-sidenav">
 <li class="toctree-l1"><a class="reference internal" href="Intro.html">Introduction</a></li>
 <li class="toctree-l1"><a class="reference internal" href="Columnar.html">Arrow Columnar Format</a></li>
 <li class="toctree-l1 current active"><a class="current reference internal" href="#">Format Versioning and Stability</a></li>
 <li class="toctree-l1"><a class="reference internal" href="Changing.html">Changing the Apache Arrow Format Specification</a></li>
 <li class="toctree-l1"><a class="reference internal" href="CanonicalExtensions.html">Canonical Extension Types</a></li>
 <li class="toctree-l1"><a class="reference internal" href="Other.html">Other Data Structures</a></li>
 <li class="toctree-l1 has-children"><a class="reference internal" href="CDataInterface.html">The Arrow C data interface</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
 <li class="toctree-l2"><a class="reference internal" href="CDataInterface/PyCapsuleInterface.html">The Arrow PyCapsule Interface</a></li>
 </ul>
 </details></li>
 <li class="toctree-l1"><a class="reference internal" href="CStreamInterface.html">The Arrow C stream interface</a></li>
 <li class="toctree-l1"><a class="reference internal" href="CDeviceDataInterface.html">The Arrow C Device data interface</a></li>
 <li class="toctree-l1"><a class="reference internal" href="StatisticsSchema.html">Statistics schema</a></li>
 <li class="toctree-l1"><a class="reference internal" href="DissociatedIPC.html">Dissociated IPC Protocol</a></li>
 <li class="toctree-l1"><a class="reference internal" href="Flight.html">Arrow Flight RPC</a></li>
 <li class="toctree-l1"><a class="reference internal" href="FlightSql.html">Arrow Flight SQL</a></li>
 <li class="toctree-l1"><a class="reference internal" href="ADBC.html">ADBC: Arrow Database Connectivity</a></li>
 <li class="toctree-l1"><a class="reference internal" href="Integration.html">Integration Testing</a></li>
 <li class="toctree-l1"><a class="reference internal" href="Glossary.html">Glossary</a></li>
 </ul>
 </div>
 </nav></div>
     </div>


   <div class="sidebar-primary-items__end sidebar-primary__section">
       <div class="sidebar-primary-item">
 <div id="ethical-ad-placement"
       class="flat"
       data-ea-publisher="readthedocs"
       data-ea-type="readthedocs-sidebar"
       data-ea-manual="true">
 </div></div>
   </div>


       </div>

       <main id="main-content" class="bd-main" role="main">


           <div class="bd-content">
             <div class="bd-article-container">

               <div class="bd-header-article d-print-none">
 <div class="header-article-items header-article__inner">

     <div class="header-article-items__start">

         <div class="header-article-item">

 <nav aria-label="Breadcrumb" class="d-print-none">
   <ul class="bd-breadcrumbs">

     <li class="breadcrumb-item breadcrumb-home">
       <a href="../index.html" class="nav-link" aria-label="Home">
         <i class="fa-solid fa-home"></i>
       </a>
     </li>

     <li class="breadcrumb-item"><a href="index.html" class="nav-link">Specifications</a></li>

     <li class="breadcrumb-item active" aria-current="page"><span class="ellipsis">Format Versioning and Stability</span></li>
   </ul>
 </nav>
 </div>

     </div>


 </div>
 </div>


 <div id="searchbox"></div>
                 <article class="bd-article">

   <section id="format-versioning-and-stability">
 <h1>Format Versioning and Stability<a class="headerlink" href="#format-versioning-and-stability" title="Link to this heading">#</a></h1>
 <p>Starting with version 1.0.0, Apache Arrow uses
 <strong>two versions</strong> to describe each release of the project:
 the <strong>Format Version</strong> and the <strong>Library Version</strong>. Each Library
 Version has a corresponding Format Version, and multiple versions of
 the library may have the same format version. For example, library
 versions 2.0.0 and 3.0.0 may both track format version 1.0.0. See
 <a class="reference internal" href="../status.html"><span class="doc">Implementation Status</span></a> for details about supported features in each library.</p>
 <p>For library versions prior to 1.0.0, major releases may contain API
 changes. From 1.0.0 onward, we follow <a class="reference external" href="https://semver.org/">Semantic Versioning</a> with regards to communicating API changes. We
 expect most releases to be major library releases.</p>
 <section id="backward-compatibility">
 <h2>Backward Compatibility<a class="headerlink" href="#backward-compatibility" title="Link to this heading">#</a></h2>
 <p>A newer versioned client library will be able to read any data and
 metadata produced by an older client library.</p>
 <p>So long as the <strong>major</strong> format version is not changed, a newer
 library is backward compatible with an older library.</p>
 </section>
 <section id="forward-compatibility">
 <h2>Forward Compatibility<a class="headerlink" href="#forward-compatibility" title="Link to this heading">#</a></h2>
 <p>An older client library must be able to either read data generated
 from a new client library or detect that it cannot properly read the
 data.</p>
 <p>An increase in the <strong>minor</strong> version of the format version, such as
 1.0.0 to 1.1.0, indicates that 1.1.0 contains new features not
 available in 1.0.0. So long as these features are not used (such as a
 new data type), forward compatibility is preserved.</p>
 </section>
 <section id="long-term-stability">
 <h2>Long-Term Stability<a class="headerlink" href="#long-term-stability" title="Link to this heading">#</a></h2>
 <p>A change in the format major version (e.g. from 1.0.0 to 2.0.0)
 indicates a disruption to these compatibility guarantees in some way.
 We <strong>do not expect</strong> this to be a frequent occurrence.
 This would be an exceptional
 event and, should this come to pass, we would exercise caution in
 ensuring that production applications are not harmed.</p>
 </section>
 <section id="pre-1-0-0-versions">
 <h2>Pre-1.0.0 Versions<a class="headerlink" href="#pre-1-0-0-versions" title="Link to this heading">#</a></h2>
 <p>We made no forward or backward compatibility guarantees for
 versions prior to 1.0.0. However, we made every effort to ensure
 that new clients can read serialized data produced by library version
 0.8.0 and onward.</p>
 </section>
 <section id="post-1-0-0-format-versions">
 <span id="id1"></span><h2>Post-1.0.0 Format Versions<a class="headerlink" href="#post-1-0-0-format-versions" title="Link to this heading">#</a></h2>
 <p>Since version 1.0.0, there have been five new minor versions and zero new
 major versions of the Arrow format. Each new minor version added new features.
 When these new features are not used, the new minor format versions are
 compatible with format version 1.0.0. The new features added in each minor
 format version since 1.0.0 are as follows:</p>
 <section id="version-1-1">
 <h3>Version 1.1<a class="headerlink" href="#version-1-1" title="Link to this heading">#</a></h3>
 <ul class="simple">
 <li><p>Added 256-bit Decimal type.</p></li>
 </ul>
 </section>
 <section id="version-1-2">
 <h3>Version 1.2<a class="headerlink" href="#version-1-2" title="Link to this heading">#</a></h3>
 <ul class="simple">
 <li><p>Added MonthDayNano interval type.</p></li>
 </ul>
 </section>
 <section id="version-1-3">
 <h3>Version 1.3<a class="headerlink" href="#version-1-3" title="Link to this heading">#</a></h3>
 <ul class="simple">
 <li><p>Added <a class="reference internal" href="Columnar.html#run-end-encoded-layout"><span class="std std-ref">Run-End Encoded Layout</span></a>.</p></li>
 </ul>
 </section>
 <section id="version-1-4">
 <h3>Version 1.4<a class="headerlink" href="#version-1-4" title="Link to this heading">#</a></h3>
 <ul class="simple">
 <li><p>Added <a class="reference internal" href="Columnar.html#variable-size-binary-view-layout"><span class="std std-ref">Variable-size Binary View Layout</span></a> and the associated BinaryView
 and Utf8View types.</p></li>
 <li><p>Added <a class="reference internal" href="Columnar.html#listview-layout"><span class="std std-ref">ListView Layout</span></a> and the associated ListView and LargeListView
 types.</p></li>
 <li><p>Added <a class="reference internal" href="Columnar.html#variadic-buffers"><span class="std std-ref">Variadic buffers</span></a>.</p></li>
 </ul>
 </section>
 <section id="version-1-5">
 <h3>Version 1.5<a class="headerlink" href="#version-1-5" title="Link to this heading">#</a></h3>
 <ul class="simple">
 <li><p>Expanded Decimal type bit widths to allow 32-bit and 64-bit types.</p></li>
 </ul>
 </section>
 </section>
 </section>


                 </article>


                 <footer class="prev-next-footer d-print-none">

 <div class="prev-next-area">
     <a class="left-prev"
        href="Columnar.html"
        title="previous page">
       <i class="fa-solid fa-angle-left"></i>
       <div class="prev-next-info">
         <p class="prev-next-subtitle">previous</p>
         <p class="prev-next-title">Arrow Columnar Format</p>
       </div>
     </a>
     <a class="right-next"
        href="Changing.html"
        title="next page">
       <div class="prev-next-info">
         <p class="prev-next-subtitle">next</p>
         <p class="prev-next-title">Changing the Apache Arrow Format Specification</p>
       </div>
       <i class="fa-solid fa-angle-right"></i>
     </a>
 </div>
                 </footer>

             </div>


                 <dialog id="pst-secondary-sidebar-modal"></dialog>
                 <div id="pst-secondary-sidebar" class="bd-sidebar-secondary bd-toc"><div class="sidebar-secondary-items sidebar-secondary__inner">


   <div class="sidebar-secondary-item">
 <div
     id="pst-page-navigation-heading-2"
     class="page-toc tocsection onthispage">
     <i class="fa-solid fa-list"></i> On this page
   </div>
   <nav class="bd-toc-nav page-toc" aria-labelledby="pst-page-navigation-heading-2">
     <ul class="visible nav section-nav flex-column">
 <li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#backward-compatibility">Backward Compatibility</a></li>
 <li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#forward-compatibility">Forward Compatibility</a></li>
 <li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#long-term-stability">Long-Term Stability</a></li>
 <li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#pre-1-0-0-versions">Pre-1.0.0 Versions</a></li>
 <li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#post-1-0-0-format-versions">Post-1.0.0 Format Versions</a><ul class="visible nav section-nav flex-column">
 <li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#version-1-1">Version 1.1</a></li>
 <li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#version-1-2">Version 1.2</a></li>
 <li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#version-1-3">Version 1.3</a></li>
 <li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#version-1-4">Version 1.4</a></li>
 <li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#version-1-5">Version 1.5</a></li>
 </ul>
 </li>
 </ul>
   </nav></div>

   <div class="sidebar-secondary-item">


   <div class="tocsection editthispage">
     <a href="https://github.com/apache/arrow/edit/main/docs/source/format/Versioning.rst">
       <i class="fa-solid fa-pencil"></i>


           Edit on GitHub


     </a>
   </div>
 </div>

 </div></div>


           </div>
           <footer class="bd-footer-content">

           </footer>

       </main>
     </div>
   </div>

   <!-- Scripts loaded after <body> so the DOM is not blocked -->
   <script defer src="../_static/scripts/bootstrap.js?digest=8878045cc6db502f8baf"></script>
 <script defer src="../_static/scripts/pydata-sphinx-theme.js?digest=8878045cc6db502f8baf"></script>

   <footer class="bd-footer">
 <div class="bd-footer__inner bd-page-width">

     <div class="footer-items__start">

         <div class="footer-item">

   <p class="copyright">

       © Copyright 2016-2025 Apache Software Foundation.
 Apache Arrow, Arrow, Apache, the Apache logo, and the Apache Arrow project logo are either registered trademarks or trademarks of The Apache Software Foundation in the United States and other countries.
       <br/>

   </p>
 </div>

         <div class="footer-item">

   <p class="sphinx-version">
     Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 8.2.3.
     <br/>
   </p>
 </div>

     </div>


     <div class="footer-items__end">

         <div class="footer-item">
 <p class="theme-version">
   <!-- # L10n: Setting the PST URL as an argument as this does not need to be localized -->
   Built with the <a href="https://pydata-sphinx-theme.readthedocs.io/en/stable/index.html">PyData Sphinx Theme</a> 0.16.1.
 </p></div>

     </div>

 </div>

   </footer>
   </body>
 </html>