Apache Accumulo

<!DOCTYPE html> <html lang="en"> <head>  <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" type="text/css" href="/css/bootstrap/5.3.3/dist/css/bootstrap.css"> <link rel="stylesheet" type="text/css" href="/css/fontawesome/fontawesome-free-6.6.0-web/css/all.css"> <link rel="stylesheet" type="text/css" href="/css/datatables/bs5/dt-2.0.8/datatables.css"> <link rel="stylesheet" type="text/css" href="/css/accumulo.css"> <title>Apache Accumulo</title> <script type="text/javascript" src="/js/jquery/3.7.1/jquery.js"></script> <script type="text/javascript" src="/js/bootstrap/5.3.3/dist/js/bootstrap.bundle.js"></script> <script type="text/javascript" src="/js/datatables/bs5/dt-2.0.8/datatables.js"></script> <script type="text/javascript" src="https://www.apachecon.com/event-images/snippet.js"></script> <script type="text/javascript" src="/js/accumulo.js"></script> </head> <body 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href="https://www.apache.org/events/current-event.html">Current Event <span class="fa-solid fa-up-right-from-square"></span></a></li> </ul> </li> </ul> </div> </div> </nav> <div class="container"> <div class="row"> <div class="col-md-12"> <div id="non-canonical" style="display: none; background-color: #F0E68C; padding-left: 1em;"> Visit the official site at: <a href="https://accumulo.apache.org">https://accumulo.apache.org</a> </div> <div id="content"> <div class="row"> <div class="col-md-8"> <div class="bg-light p-5 rounded mb-4" style="text-align: center"> <h3>Apache Accumulo® is a sorted, distributed key/value store that provides robust, scalable data storage and retrieval.</h3> <a style="margin-right: 20px" class="btn btn-success" href="downloads/" role="button"><span class="fa-solid fa-download fa-lg"></span> Download</a> <a class="btn btn-primary" href="https://github.com/apache/accumulo" role="button"><span class="fa-brands fa-github fa-lg"></span> GitHub</a> </div> <p id="home-description">With Apache Accumulo, users can store and manage large data sets across a cluster. Accumulo uses <a href="https://hadoop.apache.org">Apache Hadoop</a>'s HDFS to store its data and <a href="https://zookeeper.apache.org">Apache ZooKeeper</a> for consensus. While many users interact directly with Accumulo, several <a href="/related-projects">open source projects</a> use Accumulo as their underlying store.</p> <p id="home-description">To learn more about Accumulo, take the <a href="/tour">Accumulo tour</a>, read the <a href="/docs/2.x">user manual</a> and run the Accumulo <a href="https://github.com/apache/accumulo-examples">example code</a>. Feel free to <a href="/contact-us">contact us</a> if you have any questions. <h3>Major Features</h3> <div class="row"> <div class="col-md-6"> <h4>Server-side programming</h4> <p>Accumulo has a programming mechanism (called <a href="/docs/2.x/development/iterators">Iterators</a>) that can modify key/value pairs at various points in the data management process.</p> </div> <div class="col-md-6"> <h4>Cell-based access control</h4> <p>Every Accumulo key/value pair has its own <a href="/docs/2.x/security/authorizations#security-labels">security label</a> which limits query results based off user authorizations.</p> </div> </div> <div class="row"> <div class="col-md-6"> <h4>Designed to scale</h4> <p>Accumulo runs on a cluster using <a href="/docs/2.x/administration/multivolume">one or more HDFS instances</a>. Nodes can be added or removed as the amount of data stored in Accumulo changes.</p> </div> <div class="col-md-6"> <h4>Stable</h4> <p>Accumulo has a stable <a href="/latest/apidocs">client API</a> that follows <a href="/contributor/versioning">LTM releases and semantic versioning</a>. Each Accumulo release goes through <a href="/docs/2.x/getting-started/features#testing">extensive testing</a>.</p> </div> </div> </div> <div class="col-md-4" id="sidebar"> <div class="row"> <div class="col-sm-12 card mb-4"> <p style="font-size: 24px; margin-bottom: 0px;">Latest News</p> <div class="row latest-news-item"> <div class="col-sm-12" style="margin-bottom: 5px"> <span style="font-size: 12px; margin-right: 5px;">Oct 2024</span> <a href="/blog/2024/10/07/accumulo4-preview.html">Accumulo 4.0 Feature Preview</a> </div> </div> <div class="row latest-news-item"> <div class="col-sm-12" style="margin-bottom: 5px"> <span style="font-size: 12px; margin-right: 5px;">Aug 2024</span> <a href="/release/accumulo-2.1.3/">Apache Accumulo 2.1.3</a> </div> </div> <div class="row latest-news-item"> <div class="col-sm-12" style="margin-bottom: 5px"> <span style="font-size: 12px; margin-right: 5px;">Apr 2024</span> <a href="/blog/2024/04/09/does-a-compactor-return-memory-to-OS.html">Does a compactor process return memory to the OS?</a> </div> </div> <div class="row latest-news-item"> <div class="col-sm-12" style="margin-bottom: 5px"> <span style="font-size: 12px; margin-right: 5px;">Nov 2023</span> <a href="/release/accumulo-1.10.4/">Apache Accumulo 1.10.4</a> </div> </div> <div class="row latest-news-item"> <div class="col-sm-12" style="margin-bottom: 5px"> <span style="font-size: 12px; margin-right: 5px;">Aug 2023</span> <a href="/release/accumulo-3.0.0/">Apache Accumulo 3.0.0</a> </div> </div> <div id="news-archive-link"> <p>View all posts in the <a href="/news">news archive</a></p> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <a class="acevent" data-class="img-responsive center-block" data-format="wide" data-mode="light" data-width="240"></a><br/> <a id="accumulo-summit-logo" href="http://accumulosummit.com/"><img alt="Accumulo Summit" class="img-responsive center-block" src="/images/accumulo-summit-logo.png"/></a> </div> </div> </div> </div> </div> <footer> <p><a href="https://www.apache.org/foundation/contributing"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support the ASF" id="asf-logo" height="100" /></a></p> <p>Copyright 漏 2011-2024 <a href="https://www.apache.org">The聽Apache聽Software聽Foundation</a>. 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