| <!DOCTYPE html> |
| <html lang="en"> |
| <head> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="width=device-width,initial-scale=1"> |
| <title>Distributed James Server — Cassandra migration :: Apache James</title> |
| <meta name="generator" content="Antora 3.1.2"> |
| <link rel="stylesheet" href="../../../../../_/css/site.css"> |
| </head> |
| <body class="article"> |
| <header class="header"> |
| <nav class="navbar"> |
| <div class="navbar-brand"> |
| <a class="navbar-item" href="https://james.apache.org"><img src="/_/img/james.svg" alt="james logo"> Apache James</a> |
| <button class="navbar-burger" data-target="topbar-nav"> |
| <span></span> |
| <span></span> |
| <span></span> |
| </button> |
| </div> |
| <div id="topbar-nav" class="navbar-menu"> |
| <div class="navbar-end"> |
| <a class="navbar-item" href="#">Home</a> |
| <div class="navbar-item has-dropdown is-hoverable"> |
| <a class="navbar-link" href="#">Products</a> |
| <div class="navbar-dropdown"> |
| <div class="navbar-item"><strong>James server</strong></div> |
| <a class="navbar-item" href="https://github.com/apache/james-project">Repository</a> |
| <a class="navbar-item" href="https://issues.apache.org/jira/projects/JAMES/issues">Issue Tracker</a> |
| <hr class="navbar-divider"> |
| <a class="navbar-item" href="https://james.apache.org/mime4j/index.html">Mime4J</a> |
| <a class="navbar-item" href="https://james.apache.org/jsieve/index.html">jSieve</a> |
| <a class="navbar-item" href="https://james.apache.org/jspf/index.html">jSPF</a> |
| <a class="navbar-item" href="https://james.apache.org/jdkim/index.html">jDKIM</a> |
| <a class="navbar-item" href="https://james.apache.org/hupa/index.html">HUPA</a> |
| </div> |
| </div> |
| <div class="navbar-item has-dropdown is-hoverable"> |
| <a class="navbar-link" href="#">Community</a> |
| <div class="navbar-dropdown"> |
| <!-- Not ideal but dropping the version in the href requires tweaking james-projet docs module first --> |
| <a class="navbar-item" href="/james-project/3.6.0/community/mailing-lists.html">Mailing lists</a> |
| <a class="navbar-item" href="https://gitter.im/apache/james-project"><svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 32 32" class="logo-gitter-sign" data-v-44ebcb1a=""><rect x="15" y="5" width="2" height="10"></rect> <rect x="10" y="5" width="2" height="20"></rect> <rect x="5" y="5" width="2" height="20"></rect> <rect width="2" height="15"></rect></svg> Gitter</a> |
| <a class="navbar-item" href="https://twitter.com/ApacheJames"> |
| <span class="icon"> |
| <svg aria-hidden="true" data-icon="twitter" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"> |
| <path fill="#57aaee" d="M459.37 151.716c.325 4.548.325 9.097.325 13.645 0 138.72-105.583 298.558-298.558 298.558-59.452 0-114.68-17.219-161.137-47.106 8.447.974 16.568 1.299 25.34 1.299 49.055 0 94.213-16.568 130.274-44.832-46.132-.975-84.792-31.188-98.112-72.772 6.498.974 12.995 1.624 19.818 1.624 9.421 0 18.843-1.3 27.614-3.573-48.081-9.747-84.143-51.98-84.143-102.985v-1.299c13.969 7.797 30.214 12.67 47.431 13.319-28.264-18.843-46.781-51.005-46.781-87.391 0-19.492 5.197-37.36 14.294-52.954 51.655 63.675 129.3 105.258 216.365 109.807-1.624-7.797-2.599-15.918-2.599-24.04 0-57.828 46.782-104.934 104.934-104.934 30.213 0 57.502 12.67 76.67 33.137 23.715-4.548 46.456-13.32 66.599-25.34-7.798 24.366-24.366 44.833-46.132 57.827 21.117-2.273 41.584-8.122 60.426-16.243-14.292 20.791-32.161 39.308-52.628 54.253z"></path> |
| </svg> |
| </span> Twitter |
| </a> |
| <a class="navbar-item" href="#"> <svg class="octicon octicon-mark-github v-align-middle" viewBox="0 0 16 16" version="1.1" aria-hidden="true"><path fill-rule="evenodd" 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 0016 8c0-4.42-3.58-8-8-8z"></path></svg> Github</a> |
| </div> |
| </div> |
| <!-- <div class="navbar-item"> |
| <span class="control"> |
| <a class="button is-primary" href="#">Download</a> |
| </span> |
| </div> --> |
| </div> |
| </div> |
| </nav> |
| </header> |
| <div class="body"> |
| <div class="nav-container" data-component="james-project" data-version="3.6.0"> |
| <aside class="nav"> |
| <div class="panels"> |
| <div class="nav-panel-menu is-active" data-panel="menu"> |
| <nav class="nav-menu"> |
| <button class="nav-menu-toggle" aria-label="Toggle expand/collapse all" style="display: none"></button> |
| <h3 class="title"><a href="../../../index.html">Apache James Server</a></h3> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="0"> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="1"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../../../concepts/index.html">Concepts</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../concepts/user/index.html">User Model</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../../../concepts/mail/index.html">Emails</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="3"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="#mail/messages/index.adoc">mail/messages/index.adoc</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="#mail/messages/imf.adoc">mail/messages/imf.adoc</a> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="#mail/messages/mime.adoc">mail/messages/mime.adoc</a> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../../../concepts/protocols/index.html">Protocols</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../../concepts/protocols/smtp.html">SMTP</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../../concepts/protocols/pop.html">POP</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../../concepts/protocols/imap.html">IMAP</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../../concepts/protocols/jmap.html">JMAP</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../../concepts/protocols/esmtp.html">ESMTP</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../../concepts/protocols/lmtp.html">LMTP</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../../../concepts/storage/index.html">Storage</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../../concepts/storage/mailbox.html">Mailboxes</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../../concepts/storage/users.html">Users</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../concepts/processing/index.html">Processing</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../concepts/configuration.html">Configuration</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../concepts/glossary.html">Glossary</a> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="0"> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="1"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../../index.html">Servers</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="2"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../../demo.html">Demo</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../5-minute-demo.html">Short Demo</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../15-minute-demo.html">Long Demo</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../../basic/index.html">Basic</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../basic/context.html">Context</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../basic/objectives.html">Objectives</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../basic/concepts.html">Concepts</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../basic/architecture.html">Architecture</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../basic/conf/index.html">Configuration</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../../basic/help.html">Help</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../extendable.html">Extendable</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../../distributed.html">Distributed</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../objectives.html">Objectives and motivation</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../architecture/index.html">Architecture</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="../architecture/consistency-model.html">Consistency Model</a> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="../architecture/specialized-instances.html">Specialized instances</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../run.html">Run</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="../run-docker.html">Run with docker</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../configure/index.html">Configuration</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="4"> |
| <button class="nav-item-toggle"></button> |
| <span class="nav-text">Protocols</span> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/imap.html">imapserver.xml</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/jmap.html">jmap.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/jmx.html">jmx.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/smtp.html">smtpserver.xml & lmtpserver.xml</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/smtp-hooks.html">Packaged SMTP hooks</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/pop3.html">pop3server.xml</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/webadmin.html">webadmin.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/ssl.html">SSL & TLS</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <button class="nav-item-toggle"></button> |
| <span class="nav-text">Storage dependencies</span> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/blobstore.html">blobstore.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/cassandra.html">cassandra.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/elasticsearch.html">elasticsearch.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/rabbitmq.html">rabbitmq.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/tika.html">tika.properties</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <button class="nav-item-toggle"></button> |
| <span class="nav-text">Core components</span> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/batchsizes.html">batchsizes.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/dns.html">dnsservice.xml</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/domainlist.html">domainlist.xml</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/healthcheck.html">healthcheck.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/mailetcontainer.html">mailetcontainer.xml</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/mailets.html">Packaged Mailets</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/matchers.html">Packaged Matchers</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/mailrepositorystore.html">mailrepositorystore.xml</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/recipientrewritetable.html">recipientrewritetable.xml</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/usersrepository.html">usersrepository.xml</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <button class="nav-item-toggle"></button> |
| <span class="nav-text">Extensions</span> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/vault.html">deletedMessageVault.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/extensions.html">extensions.properties</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/listeners.html">listeners.xml</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/spam.html">Anti-Spam setup</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/remote-delivery-error-handling.html">About RemoteDelivery error handling</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/collecting-contacts.html">Contact collection</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/collecting-events.html">Event collection</a> |
| </li> |
| <li class="nav-item" data-depth="5"> |
| <a class="nav-link" href="../configure/dsn.html">ESMTP DSN support</a> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="index.html">Operate</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="guide.html">Operator guide</a> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="logging.html">Logging</a> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="webadmin.html">WebAdmin REST administration API</a> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="metrics.html">Metrics</a> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="migrating.html">Migrating existing data</a> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="cli.html">Command Line Interface</a> |
| </li> |
| <li class="nav-item is-current-page" data-depth="4"> |
| <a class="nav-link" href="cassandra-migration.html">Cassandra migration</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../extending/index.html">Extending server behavior</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="../extending/mail-processing.html">Custom mail processing components</a> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="../extending/mailbox-listeners.html">Custom Mailbox Listeners</a> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="../extending/smtp-hooks.html">Custom SMTP hooks</a> |
| </li> |
| <li class="nav-item" data-depth="4"> |
| <a class="nav-link" href="../extending/webadmin-routes.html">Custom WebAdmin routes</a> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../test.html">Test</a> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="0"> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="1"> |
| <a class="nav-link" href="../../../customization/index.html">Customization</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="0"> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="1"> |
| <a class="nav-link" href="../../../development/index.html">Developer Guide</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="0"> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="1"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../../../community/index.html">Community</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../community/mailing-lists.html">Mailing lists</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../community/contributing.html">Contributing</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../community/guidelines.html">Guidelines</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../community/download.html">Download releases</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../community/website.html">Building and publishing the website</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../community/release.html">Creating an official Apache James release</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../../../community/support.html">Professional support</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <button class="nav-item-toggle"></button> |
| <span class="nav-text">Apache Software Foundation</span> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="https://www.apache.org/">ASF</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="https://www.apache.org/foundation/getinvolved.html">Get involved</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="https://www.apache.org/foundation/faq.html">FAQ</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="https://www.apache.org/licenses/">Licenses</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="https://www.apache.org/security/">Security</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="https://www.apache.org/foundation/sponsorship.html">Sponsorship</a> |
| </li> |
| <li class="nav-item" data-depth="3"> |
| <a class="nav-link" href="https://www.apache.org/foundation/thanks.html">Thanks</a> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </nav> |
| </div> |
| <div class="nav-panel-explore" data-panel="explore"> |
| <div class="context"> |
| <span class="title">Apache James Server</span> |
| <span class="version">3.6.0 Snapshot</span> |
| </div> |
| <ul class="components"> |
| <li class="component"> |
| <div class="title"><a href="../../../../../james-distributed-app/3.8.1/index.html">Apache James Distributed Server</a></div> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../../../james-distributed-app/3.8.1/index.html">3.8.1 SNAPSHOT</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component is-current"> |
| <div class="title"><a href="../../../../3.8.1/index.html">Apache James Server</a></div> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../../3.8.1/index.html">3.8.1 SNAPSHOT</a> |
| </li> |
| <li class="version is-current"> |
| <a href="../../../index.html">3.6.0 Snapshot</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <div class="title"><a href="../../../../../james-site/latest/index.html">Apache James Site</a></div> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../../../james-site/latest/index.html">latest</a> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </aside> |
| </div> |
| <main class="article"> |
| <div class="toolbar" role="navigation"> |
| <button class="nav-toggle"></button> |
| <a href="../../../../../james-site/latest/homepage.html" class="home-link"></a> |
| <nav class="breadcrumbs" aria-label="breadcrumbs"> |
| <ul> |
| <li><a href="../../../index.html">Apache James Server</a></li> |
| <li><a href="../../index.html">Servers</a></li> |
| <li><a href="../../distributed.html">Distributed</a></li> |
| <li><a href="index.html">Operate</a></li> |
| <li><a href="cassandra-migration.html">Cassandra migration</a></li> |
| </ul> |
| </nav> |
| <div class="page-versions"> |
| <button class="version-menu-toggle" title="Show other versions of page">3.6.0 Snapshot</button> |
| <div class="version-menu"> |
| <a class="version is-missing" href="../../../../3.8.1/index.html">3.8.1 SNAPSHOT</a> |
| <a class="version is-current" href="cassandra-migration.html">3.6.0 Snapshot</a> |
| </div> |
| </div> |
| <div class="edit-this-page"><a href="https://github.com/apache/james-project/blob/james-project-3.6.0/docs/modules/servers/pages/distributed/operate/cassandra-migration.adoc">Edit this Page</a></div> |
| </div> |
| <div class="content"> |
| <aside class="toc sidebar" data-title="Contents" data-levels="2"> |
| <div class="toc-menu"></div> |
| </aside> |
| <article class="doc"> |
| <h1 class="page">Distributed James Server — Cassandra migration</h1> |
| <div class="paragraph"> |
| <p>Cassandra upgrades implies the creation of a new table. Thus restarting James is needed, as new tables are created on restart.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Once done, we ship code that tries to read from new tables, and if not possible backs up to old tables. You can thus safely run |
| without running additional migrations.</p> |
| </div> |
| <div class="paragraph"> |
| <p>On the fly migration can be enabled. However, one might want to force the migration in a controlled fashion, and update |
| automatically current schema version used (assess in the database old versions is no more used, as the corresponding tables are empty). |
| Note that this process is safe: we ensure the service is not running concurrently on this James instance, that it does not bump |
| version upon partial failures, that race condition in version upgrades will be idempotent, etc…​</p> |
| </div> |
| <div class="paragraph"> |
| <p>These schema updates can be triggered by <a href="webadmin.html#_cassandra_schema_upgrades" class="xref page">webadmin</a>.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Note that currently the progress can be tracked by logs.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Here are the implemented migrations:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p><strong>From V5 to V6</strong> : Goal is to no longer rely on an UDT partition key for mailboxPath tables. Entries will be migrated |
| to mailboxPathV2 table relying on a composite primary key.</p> |
| </li> |
| <li> |
| <p><strong>From V6 to V7</strong> : Goal is to populate mapping_sources projection table. This table allows finding the source of a given redirection, which is |
| handy for things like mail aliases (I want to list aliases rewritting things to bob). Without this projection table being available, |
| (ie we rely on schema version 6 or less) such information is obtained through a full table scan, unoptimized. From schema version 7, |
| the optimized projection can safely be used.</p> |
| </li> |
| <li> |
| <p><strong>From V7 to V8</strong> : Add UID_VALIDITY to mailboxPath table in order not to mandate mailbox table reads.</p> |
| </li> |
| <li> |
| <p><strong>From V8 to V9</strong> : Adopt a more compact representation for message properties.</p> |
| </li> |
| </ul> |
| </div> |
| <div class="paragraph"> |
| <p>The <a href="guide.html#_updating_cassandra_schema_version" class="xref page">Operator guide</a> further details the migration process.</p> |
| </div> |
| </article> |
| </div> |
| </main> |
| </div> |
| <footer class="footer"> |
| <p>This page was built using the Antora default UI.</p> |
| <p>The source code for this UI is licensed under the terms of the MPL-2.0 license.</p> |
| </footer> |
| <script id="site-script" src="../../../../../_/js/site.js" data-ui-root-path="../../../../../_"></script> |
| <script async src="../../../../../_/js/vendor/highlight.js"></script> |
| </body> |
| </html> |
