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<link rel="icon" href="https://blog.metabrainz.org/wp-content/uploads/2018/11/cropped-metabrainz_logo.png?w=32" sizes="32x32" /> <link rel="icon" href="https://blog.metabrainz.org/wp-content/uploads/2018/11/cropped-metabrainz_logo.png?w=150" sizes="192x192" /> <link rel="apple-touch-icon" href="https://blog.metabrainz.org/wp-content/uploads/2018/11/cropped-metabrainz_logo.png?w=150" /> <meta name="msapplication-TileImage" content="https://blog.metabrainz.org/wp-content/uploads/2018/11/cropped-metabrainz_logo.png?w=150" /> </head> <body class="archive category category-breaking-changes category-19867758 wp-embed-responsive customizer-styles-applied group-blog hfeed jetpack-reblog-enabled"> <div id="page" class="site"> <div class="site-inner"> <a class="skip-link screen-reader-text" href="#content"> Skip to content </a> <header id="masthead" class="site-header"> <div class="site-header-main"> <div class="site-branding"> <a href="https://blog.metabrainz.org/" class="site-logo-link" rel="home" itemprop="url"></a> <p class="site-title"><a href="https://blog.metabrainz.org/" rel="home">MetaBrainz Blog</a></p> <p class="site-description">MetaBrainz Foundation community blog</p> </div> <button id="menu-toggle" class="menu-toggle">Menu</button> <div id="site-header-menu" class="site-header-menu"> <nav id="site-navigation" class="main-navigation" aria-label="Primary Menu"> </nav> </div> </div> <div class="header-image"> <a href="https://blog.metabrainz.org/" rel="home"> <img src="https://blog.metabrainz.org/wp-content/uploads/2018/11/cropped-twitter-banner-1500x500.jpg" srcset="" sizes="" width="1200" height="186" alt="MetaBrainz Blog"> </a> </div> </header> <div id="content" class="site-content"> <div id="primary" class="content-area"> <main id="main" class="site-main"> <header class="page-header"> <h1 class="page-title">Category: <span>Breaking Changes</span></h1> </header> <article id="post-11676" class="post-11676 post type-post status-publish format-standard hentry category-breaking-changes category-development category-musicbrainz category-search-server category-server category-updates tag-musicbrainz tag-musicbrainz-server tag-schema-change tag-search-server tag-solr"> <header class="entry-header"> <h2 class="entry-title"><a href="https://blog.metabrainz.org/2024/09/27/major-upgrade-for-mirrors-november-25-2024/" rel="bookmark">Major upgrade for mirrors: November 25, 2024</a></h2> </header> <div class="entry-content"> <p>MusicBrainz is announcing a major mirror upgrade for November 25, 2024. The minimum required version of Docker Compose will change from v1.21.1 to v2. Search will be upgraded from Solr 7 to Solr 9. Mirrors will likely require a reinstall from scratch, we will provide instructions by release day.</p> <p>This upgrade is not going to break replication for existing mirrors, even mirrors that have enabled live search. However, Solr 7 dumps will no longer be available.</p> <a href="https://blog.metabrainz.org/2024/09/27/major-upgrade-for-mirrors-november-25-2024/#more-11676" class="more-link">Continue reading<span class="screen-reader-text"> “Major upgrade for mirrors: November 25, 2024”</span></a> </div> <footer class="entry-footer"> <span class="byline"><span class="author vcard"><span class="screen-reader-text">Author </span> <a class="url fn n" href="https://blog.metabrainz.org/author/yvanzo/">yvanzo</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://blog.metabrainz.org/2024/09/27/major-upgrade-for-mirrors-november-25-2024/" rel="bookmark"><time class="entry-date published" datetime="2024-09-27T13:17:23+00:00">September 27, 2024</time><time class="updated" datetime="2024-09-27T14:25:01+00:00">September 27, 2024</time></a></span><span class="cat-links"><span class="screen-reader-text">Categories </span><a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/" rel="category tag">Breaking Changes</a>, <a href="https://blog.metabrainz.org/category/development/" rel="category tag">Development</a>, <a href="https://blog.metabrainz.org/category/musicbrainz/" rel="category tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/category/development/search-server/" rel="category tag">Search Server</a>, <a href="https://blog.metabrainz.org/category/development/server/" rel="category tag">Server</a>, <a href="https://blog.metabrainz.org/category/development/updates/" rel="category tag">Updates</a></span><span class="tags-links"><span class="screen-reader-text">Tags </span><a href="https://blog.metabrainz.org/tag/musicbrainz/" rel="tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/tag/musicbrainz-server/" rel="tag">MusicBrainz Server</a>, <a href="https://blog.metabrainz.org/tag/schema-change/" rel="tag">schema change</a>, <a href="https://blog.metabrainz.org/tag/search-server/" rel="tag">Search Server</a>, <a href="https://blog.metabrainz.org/tag/solr/" rel="tag">solr</a></span><span class="comments-link"><a href="https://blog.metabrainz.org/2024/09/27/major-upgrade-for-mirrors-november-25-2024/#respond">Leave a comment<span class="screen-reader-text"> on Major upgrade for mirrors: November 25, 2024</span></a></span> </footer> </article> <article id="post-11388" class="post-11388 post type-post status-publish format-standard hentry category-breaking-changes category-development category-musicbrainz category-schema-change-release category-server category-updates category-virtual-machine tag-changelog tag-instructions tag-musicbrainz tag-schema-change"> <header class="entry-header"> <h2 class="entry-title"><a href="https://blog.metabrainz.org/2024/05/13/musicbrainz-schema-change-release-2024-05-13-with-upgrade-instructions/" rel="bookmark">MusicBrainz schema change release, 2024-05-13 (with upgrade instructions)</a></h2> </header> <div class="entry-content"> <p>We’re happy to announce the release of our <a href="https://blog.metabrainz.org/2024/03/12/schema-change-release-may-13-2024/">May 2024 schema change</a> now! Thanks to all who were patient during yesterday’s downtime as we released everything to our production servers. Final testing for the mirrors also took some more time. Note that the initially announced upgrades for MusicBrainz search engine are just about to reach our beta website, and thus are postponed for mirrors too but can be expected for the few next releases.</p> <p>This is a fairly small schema change release which mostly removes unused code and improves things behind the scenes. Of the schema change tickets, there are only two that will directly affect users as they browse and edit in MusicBrainz. The first (<a href="https://tickets.metabrainz.org/browse/MBS-13421">MBS-13421</a>) adds genre collections, so that editors can for example make a list of their favorite genres. The second (<a href="https://tickets.metabrainz.org/browse/MBS-13514">MBS-13514</a>) allows entering 6-digit label codes.</p> <p>Additionally, derat gratified us with making aliases more visible in the website, and some other improvements, while yellowhatpro polished cover art priority.</p> <p>Thanks to chaban, cyberskull, thomasegger, Toad King, and wileyfoxyx for having reported bugs and suggested improvements. Thanks to 0x1026, Anonymous, “ApeKattQuest, MonkeyPython”, AshPigeon, Autom, brtc, chaban, claybiockiller, danBLOO, darlingz, eigenric, Evergarden, GABG, hashflu, hesheng, julian45, kellnerd, LiarOnce, Philipp Wolfer, salo.rock, suming, Vac31., wileyfoxyx, x1ao4, xiaole_0714223, yangmouren, yyb987, and zemeles for updating the translations. And thanks to all others who tested the <a href="https://beta.musicbrainz.org/">beta version</a>!</p> <p>A new release of MusicBrainz Docker is also available that matches this update of MusicBrainz Server. See the <a href="https://github.com/metabrainz/musicbrainz-docker/releases/tag/v-2024-05-13-mbdb29-pg16">release notes</a> for update instructions.</p> <a href="https://blog.metabrainz.org/2024/05/13/musicbrainz-schema-change-release-2024-05-13-with-upgrade-instructions/#more-11388" class="more-link">Continue reading<span class="screen-reader-text"> “MusicBrainz schema change release, 2024-05-13 (with upgrade instructions)”</span></a> </div> <footer class="entry-footer"> <span class="byline"><span class="author vcard"><span class="screen-reader-text">Author </span> <a class="url fn n" href="https://blog.metabrainz.org/author/reosarevok/">reosarevok</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://blog.metabrainz.org/2024/05/13/musicbrainz-schema-change-release-2024-05-13-with-upgrade-instructions/" rel="bookmark"><time class="entry-date published" datetime="2024-05-13T21:44:28+00:00">May 13, 2024</time><time class="updated" datetime="2024-05-14T16:20:15+00:00">May 14, 2024</time></a></span><span class="cat-links"><span class="screen-reader-text">Categories </span><a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/" rel="category tag">Breaking Changes</a>, <a href="https://blog.metabrainz.org/category/development/" rel="category tag">Development</a>, <a href="https://blog.metabrainz.org/category/musicbrainz/" rel="category tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/schema-change-release/" rel="category tag">Schema Change Release</a>, <a href="https://blog.metabrainz.org/category/development/server/" rel="category tag">Server</a>, <a href="https://blog.metabrainz.org/category/development/updates/" rel="category tag">Updates</a>, <a href="https://blog.metabrainz.org/category/development/virtual-machine/" rel="category tag">Virtual Machine</a></span><span class="tags-links"><span class="screen-reader-text">Tags </span><a href="https://blog.metabrainz.org/tag/changelog/" rel="tag">changelog</a>, <a href="https://blog.metabrainz.org/tag/instructions/" rel="tag">instructions</a>, <a href="https://blog.metabrainz.org/tag/musicbrainz/" rel="tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/tag/schema-change/" rel="tag">schema change</a></span><span class="comments-link"><a href="https://blog.metabrainz.org/2024/05/13/musicbrainz-schema-change-release-2024-05-13-with-upgrade-instructions/#comments">2 Comments<span class="screen-reader-text"> on MusicBrainz schema change release, 2024-05-13 (with upgrade instructions)</span></a></span> </footer> </article> <article id="post-11280" class="post-11280 post type-post status-publish format-standard hentry category-breaking-changes category-development category-musicbrainz category-schema-change-release category-search-server category-server category-updates tag-musicbrainz tag-musicbrainz-server tag-schema-change tag-search-server tag-solr"> <header class="entry-header"> <h2 class="entry-title"><a href="https://blog.metabrainz.org/2024/03/12/schema-change-release-may-13-2024/" rel="bookmark">Schema change release: May 13, 2024</a></h2> </header> <div class="entry-content"> <p>MusicBrainz is announcing a new database schema change release for May 13, 2024. The main change will be to upgrade from PostgreSQL 12 to 16. Even though it isn’t database-related, Perl will also be upgraded from 5.30 to 5.38. Those will become the minimum required versions. Other changes are mostly clean-up and refactoring, with the exception of support for genre collections and (addendum) 6-digit label codes.</p> <p>A few weeks after, the search engine will also be upgraded from Solr 7 to 9. Search indexes will have to be rebuilt on mirrors, which takes some time. Gladsomely, it will allow us to implement search improvements again.</p> <a href="https://blog.metabrainz.org/2024/03/12/schema-change-release-may-13-2024/#more-11280" class="more-link">Continue reading<span class="screen-reader-text"> “Schema change release: May 13, 2024”</span></a> </div> <footer class="entry-footer"> <span class="byline"><span class="author vcard"><span class="screen-reader-text">Author </span> <a class="url fn n" href="https://blog.metabrainz.org/author/reosarevok/">reosarevok</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://blog.metabrainz.org/2024/03/12/schema-change-release-may-13-2024/" rel="bookmark"><time class="entry-date published" datetime="2024-03-12T20:03:39+00:00">March 12, 2024</time><time class="updated" datetime="2024-05-13T11:47:51+00:00">May 13, 2024</time></a></span><span class="cat-links"><span class="screen-reader-text">Categories </span><a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/" rel="category tag">Breaking Changes</a>, <a href="https://blog.metabrainz.org/category/development/" rel="category tag">Development</a>, <a href="https://blog.metabrainz.org/category/musicbrainz/" rel="category tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/schema-change-release/" rel="category tag">Schema Change Release</a>, <a href="https://blog.metabrainz.org/category/development/search-server/" rel="category tag">Search Server</a>, <a href="https://blog.metabrainz.org/category/development/server/" rel="category tag">Server</a>, <a href="https://blog.metabrainz.org/category/development/updates/" rel="category tag">Updates</a></span><span class="tags-links"><span class="screen-reader-text">Tags </span><a href="https://blog.metabrainz.org/tag/musicbrainz/" rel="tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/tag/musicbrainz-server/" rel="tag">MusicBrainz Server</a>, <a href="https://blog.metabrainz.org/tag/schema-change/" rel="tag">schema change</a>, <a href="https://blog.metabrainz.org/tag/search-server/" rel="tag">Search Server</a>, <a href="https://blog.metabrainz.org/tag/solr/" rel="tag">solr</a></span><span class="comments-link"><a href="https://blog.metabrainz.org/2024/03/12/schema-change-release-may-13-2024/#respond">Leave a comment<span class="screen-reader-text"> on Schema change release: May 13, 2024</span></a></span> </footer> </article> <article id="post-10270" class="post-10270 post type-post status-publish format-standard hentry category-breaking-changes category-development category-musicbrainz category-schema-change-release category-server category-updates category-virtual-machine tag-changelog tag-instructions tag-musicbrainz tag-schema-change"> <header class="entry-header"> <h2 class="entry-title"><a href="https://blog.metabrainz.org/2023/05/15/musicbrainz-schema-change-release-2023-05-15-with-upgrade-instructions/" rel="bookmark">MusicBrainz schema change release, 2023-05-15 (with upgrade instructions)</a></h2> </header> <div class="entry-content"> <p>We’re happy to announce the release of our <a href="https://blog.metabrainz.org/2023/03/15/schema-change-release-may-15-2023/">May 2023 schema change</a> today! Thanks to all who were patient during today’s downtime as we released everything to our production servers, and thanks to CatQuest, jesus2099, and yindesu for creating tickets.</p> <p>This is a fairly small schema change release which mostly removes unused code and improves things behind the scenes. Of the schema change tickets, there are only two that will directly affect users as they browse and edit in MusicBrainz. </p> <p>The first (<a href="https://tickets.metabrainz.org/browse/MBS-12800">MBS-12800</a>) makes it so that cancelled releases are ignored when calculating the first release dates for recordings and release groups; since something that was cancelled was by definition not released, it should not be used as a first release date.</p> <p>The second (<a href="https://tickets.metabrainz.org/browse/MBS-11312">MBS-11312</a>) lays the foundation for a new feature (<a href="https://tickets.metabrainz.org/browse/MBS-4685">MBS-4685</a>) that will allow users to edit or delete their edit notes, as long as a set of conditions are met (see <a href="https://wiki.musicbrainz.org/Edit_Note#Changing_or_deleting_notes">the edit note docs</a> for details). Admins will be able to edit or delete any edit notes at any time (<a href="https://tickets.metabrainz.org/browse/MBS-13084">MBS-13084</a>), mostly to get rid of spam or offensive content, but also to help any editor who cannot change their note anymore but has an important reason why they need to do so. This feature will be available for testing in our beta server on Tuesday and we expect to release it next week, assuming our beta testers don’t find any too big issue with it by then.</p> <p>A new release of MusicBrainz Docker is also available that matches this update of MusicBrainz Server. See the <a href="https://github.com/metabrainz/musicbrainz-docker/releases/tag/v-2023-05-16-mbdb28">release notes</a> for update instructions.</p> <a href="https://blog.metabrainz.org/2023/05/15/musicbrainz-schema-change-release-2023-05-15-with-upgrade-instructions/#more-10270" class="more-link">Continue reading<span class="screen-reader-text"> “MusicBrainz schema change release, 2023-05-15 (with upgrade instructions)”</span></a> </div> <footer class="entry-footer"> <span class="byline"><span class="author vcard"><span class="screen-reader-text">Author </span> <a class="url fn n" href="https://blog.metabrainz.org/author/yvanzo/">yvanzo</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://blog.metabrainz.org/2023/05/15/musicbrainz-schema-change-release-2023-05-15-with-upgrade-instructions/" rel="bookmark"><time class="entry-date published" datetime="2023-05-15T21:43:46+00:00">May 15, 2023</time><time class="updated" datetime="2023-05-16T08:51:38+00:00">May 16, 2023</time></a></span><span class="cat-links"><span class="screen-reader-text">Categories </span><a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/" rel="category tag">Breaking Changes</a>, <a href="https://blog.metabrainz.org/category/development/" rel="category tag">Development</a>, <a href="https://blog.metabrainz.org/category/musicbrainz/" rel="category tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/schema-change-release/" rel="category tag">Schema Change Release</a>, <a href="https://blog.metabrainz.org/category/development/server/" rel="category tag">Server</a>, <a href="https://blog.metabrainz.org/category/development/updates/" rel="category tag">Updates</a>, <a href="https://blog.metabrainz.org/category/development/virtual-machine/" rel="category tag">Virtual Machine</a></span><span class="tags-links"><span class="screen-reader-text">Tags </span><a href="https://blog.metabrainz.org/tag/changelog/" rel="tag">changelog</a>, <a href="https://blog.metabrainz.org/tag/instructions/" rel="tag">instructions</a>, <a href="https://blog.metabrainz.org/tag/musicbrainz/" rel="tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/tag/schema-change/" rel="tag">schema change</a></span><span class="comments-link"><a href="https://blog.metabrainz.org/2023/05/15/musicbrainz-schema-change-release-2023-05-15-with-upgrade-instructions/#comments">4 Comments<span class="screen-reader-text"> on MusicBrainz schema change release, 2023-05-15 (with upgrade instructions)</span></a></span> </footer> </article> <article id="post-10163" class="post-10163 post type-post status-publish format-standard hentry category-musicbrainz category-schema-change-release tag-schema-change"> <header class="entry-header"> <h2 class="entry-title"><a href="https://blog.metabrainz.org/2023/03/15/schema-change-release-may-15-2023/" rel="bookmark">Schema change release: May 15, 2023</a></h2> </header> <div class="entry-content"> <p>MusicBrainz is announcing a new schema change release for May 15, 2023. The actual schema (database) changes we’ve detailed below shouldn’t have much perceivable impact on mirror servers, especially if you only use the web service; most are to remove unused tables/columns or tweak how certain tables are materialized.</p> <a href="https://blog.metabrainz.org/2023/03/15/schema-change-release-may-15-2023/#more-10163" class="more-link">Continue reading<span class="screen-reader-text"> “Schema change release: May 15, 2023”</span></a> </div> <footer class="entry-footer"> <span class="byline"><span class="author vcard"><span class="screen-reader-text">Author </span> <a class="url fn n" href="https://blog.metabrainz.org/author/mwiencek/">mwiencek</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://blog.metabrainz.org/2023/03/15/schema-change-release-may-15-2023/" rel="bookmark"><time class="entry-date published" datetime="2023-03-15T20:00:00+00:00">March 15, 2023</time><time class="updated" datetime="2023-09-07T03:58:59+00:00">September 7, 2023</time></a></span><span class="cat-links"><span class="screen-reader-text">Categories </span><a href="https://blog.metabrainz.org/category/musicbrainz/" rel="category tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/schema-change-release/" rel="category tag">Schema Change Release</a></span><span class="tags-links"><span class="screen-reader-text">Tags </span><a href="https://blog.metabrainz.org/tag/schema-change/" rel="tag">schema change</a></span><span class="comments-link"><a href="https://blog.metabrainz.org/2023/03/15/schema-change-release-may-15-2023/#comments">1 Comment<span class="screen-reader-text"> on Schema change release: May 15, 2023</span></a></span> </footer> </article> <article id="post-9879" class="post-9879 post type-post status-publish format-standard hentry category-breaking-changes category-musicbrainz category-search-server category-updates tag-musicbrainz tag-search-server"> <header class="entry-header"> <h2 class="entry-title"><a href="https://blog.metabrainz.org/2022/11/24/end-of-life-for-external-access-to-musicbrainz-search-server/" rel="bookmark">End-of-life for external access to MusicBrainz search server</a></h2> </header> <div class="entry-content"> <p>For MusicBrainz mirrors, MusicBrainz server development, and custom applications, there used to be a direct access to <code>search.musicbrainz.org</code> which was actually inherited from the previous search infrastructure until 2018.</p> <p>Keeping it available in the current infrastructure uses a compatibility layer which has been unintentionally broken last year. This issue has been reported only once. The alternative and much more sensible solution which is to <a href="https://github.com/metabrainz/musicbrainz-docker">install a local search server</a> has improved in reliability and simplicity in the meantime. <a href="https://community.metabrainz.org/t/relevance-of-maintaining-search-musicbrainz-org/609645?u=yvanzo">Polling the community</a> shown that only one person would be interested which isn’t enough to justify the maintenance overhead for this replaceable service.</p> <p>Therefore it has been decided to close this access for good.</p> <p>Thanks to everyone who made this transitioning service to work and handle about 40k requests a day on average!</p> </div> <footer class="entry-footer"> <span class="byline"><span class="author vcard"><span class="screen-reader-text">Author </span> <a class="url fn n" href="https://blog.metabrainz.org/author/yvanzo/">yvanzo</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://blog.metabrainz.org/2022/11/24/end-of-life-for-external-access-to-musicbrainz-search-server/" rel="bookmark"><time class="entry-date published updated" datetime="2022-11-24T16:55:50+00:00">November 24, 2022</time></a></span><span class="cat-links"><span class="screen-reader-text">Categories </span><a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/" rel="category tag">Breaking Changes</a>, <a href="https://blog.metabrainz.org/category/musicbrainz/" rel="category tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/category/development/search-server/" rel="category tag">Search Server</a>, <a href="https://blog.metabrainz.org/category/development/updates/" rel="category tag">Updates</a></span><span class="tags-links"><span class="screen-reader-text">Tags </span><a href="https://blog.metabrainz.org/tag/musicbrainz/" rel="tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/tag/search-server/" rel="tag">Search Server</a></span><span class="comments-link"><a href="https://blog.metabrainz.org/2022/11/24/end-of-life-for-external-access-to-musicbrainz-search-server/#respond">Leave a comment<span class="screen-reader-text"> on End-of-life for external access to MusicBrainz search server</span></a></span> </footer> </article> <article id="post-9589" class="post-9589 post type-post status-publish format-standard hentry category-development category-musicbrainz category-schema-change-release category-server category-updates tag-musicbrainz tag-schema-change"> <header class="entry-header"> <h2 class="entry-title"><a href="https://blog.metabrainz.org/2022/08/08/steps-to-fix-missing-genre-and-tag-data-on-musicbrainz-mirror-servers/" rel="bookmark">Steps to fix missing genre and tag data on MusicBrainz mirror servers</a></h2> </header> <div class="entry-content"> <p>If you recently updated your mirror server to the <a rel="noreferrer noopener" href="https://blog.metabrainz.org/2022/05/16/musicbrainz-schema-change-release-2022-05-16-with-upgrade-instructions/" target="_blank">2022-05-16 schema change release</a>, we’re sorry to say that a bug in our upgrade script caused aggregate genre and tag data (if you had imported any) to be deleted. If you need this data, it can be re-imported from a recent dump, and we’ve written a script to help automate that.</p> <p>You can safely ignore this post if</p> <ul class="wp-block-list"><li>you’re not running a <a rel="noreferrer noopener" href="https://musicbrainz.org/doc/Live_Data_Feed" target="_blank">mirror server</a>;</li><li>you’ve never imported the <a rel="noreferrer noopener" href="https://musicbrainz.org/doc/MusicBrainz_Database/Download#mbdump-derived.tar.bz2" target="_blank">derived data dump</a> or don’t make use of <a rel="noreferrer noopener" href="https://musicbrainz.org/tags" target="_blank">genre or tag data</a>;</li><li>you’ve already done a full re-import of your database after the schema change release.</li></ul> <p>To restore the genre and tag data, follow these steps:</p> <ol class="wp-block-list"><li>Ensure you’ve replicated up to the most recent replication packet available. If you’re not sure, run <code>./admin/replication/LoadReplicationChanges</code>. If you’re up-to-date, it should log “Replication packet … is not available.”</li><li>Run <code>git checkout production && git pull origin production</code>.</li><li>Turn off any cron jobs that update the database, including for replication.</li><li>Run <code>./admin/sql/updates/20220720-mbs-12508.sh</code>.</li><li>Restart any cron jobs that you disabled.</li></ol> <p>You can verify that this process worked by checking the number of tags in the database: <code>echo 'SELECT count(*) FROM tag' | ./admin/psql READWRITE</code>. It should be over 200,000.</p> <p>Sorry for the inconvenience, and let us know if you encounter any further issues.</p> </div> <footer class="entry-footer"> <span class="byline"><span class="author vcard"><span class="screen-reader-text">Author </span> <a class="url fn n" href="https://blog.metabrainz.org/author/mwiencek/">mwiencek</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://blog.metabrainz.org/2022/08/08/steps-to-fix-missing-genre-and-tag-data-on-musicbrainz-mirror-servers/" rel="bookmark"><time class="entry-date published" datetime="2022-08-08T09:14:50+00:00">August 8, 2022</time><time class="updated" datetime="2022-08-25T18:53:58+00:00">August 25, 2022</time></a></span><span class="cat-links"><span class="screen-reader-text">Categories </span><a href="https://blog.metabrainz.org/category/development/" rel="category tag">Development</a>, <a href="https://blog.metabrainz.org/category/musicbrainz/" rel="category tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/schema-change-release/" rel="category tag">Schema Change Release</a>, <a href="https://blog.metabrainz.org/category/development/server/" rel="category tag">Server</a>, <a href="https://blog.metabrainz.org/category/development/updates/" rel="category tag">Updates</a></span><span class="tags-links"><span class="screen-reader-text">Tags </span><a href="https://blog.metabrainz.org/tag/musicbrainz/" rel="tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/tag/schema-change/" rel="tag">schema change</a></span><span class="comments-link"><a href="https://blog.metabrainz.org/2022/08/08/steps-to-fix-missing-genre-and-tag-data-on-musicbrainz-mirror-servers/#respond">Leave a comment<span class="screen-reader-text"> on Steps to fix missing genre and tag data on MusicBrainz mirror servers</span></a></span> </footer> </article> <article id="post-9463" class="post-9463 post type-post status-publish format-standard hentry category-musicbrainz category-schema-change-release category-search-server category-server category-updates tag-changelog tag-instructions tag-schema-change"> <header class="entry-header"> <h2 class="entry-title"><a href="https://blog.metabrainz.org/2022/05/16/musicbrainz-schema-change-release-2022-05-16-with-upgrade-instructions/" rel="bookmark">MusicBrainz schema change release, 2022-05-16 (with upgrade instructions)</a></h2> </header> <div class="entry-content"> <p>We’re happy to announce the release of our <a href="https://blog.metabrainz.org/2022/03/15/schema-change-release-may-16-2022/">May 2022 schema change</a> today! Thanks to all who were patient during today’s downtime as we released everything to our production servers, and thanks to ikerm2003, mfmeulenbelt rinmon and salo.rock for updating the translations.</p> <p>This is once again a fairly minor release as far as schema changes go, but please do report any issues that you come across, especially related to the propagation of ratings and tags.</p> <a href="https://blog.metabrainz.org/2022/05/16/musicbrainz-schema-change-release-2022-05-16-with-upgrade-instructions/#more-9463" class="more-link">Continue reading<span class="screen-reader-text"> “MusicBrainz schema change release, 2022-05-16 (with upgrade instructions)”</span></a> </div> <footer class="entry-footer"> <span class="byline"><span class="author vcard"><span class="screen-reader-text">Author </span> <a class="url fn n" href="https://blog.metabrainz.org/author/reosarevok/">reosarevok</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://blog.metabrainz.org/2022/05/16/musicbrainz-schema-change-release-2022-05-16-with-upgrade-instructions/" rel="bookmark"><time class="entry-date published" datetime="2022-05-16T21:48:53+00:00">May 16, 2022</time><time class="updated" datetime="2023-09-07T04:22:21+00:00">September 7, 2023</time></a></span><span class="cat-links"><span class="screen-reader-text">Categories </span><a href="https://blog.metabrainz.org/category/musicbrainz/" rel="category tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/schema-change-release/" rel="category tag">Schema Change Release</a>, <a href="https://blog.metabrainz.org/category/development/search-server/" rel="category tag">Search Server</a>, <a href="https://blog.metabrainz.org/category/development/server/" rel="category tag">Server</a>, <a href="https://blog.metabrainz.org/category/development/updates/" rel="category tag">Updates</a></span><span class="tags-links"><span class="screen-reader-text">Tags </span><a href="https://blog.metabrainz.org/tag/changelog/" rel="tag">changelog</a>, <a href="https://blog.metabrainz.org/tag/instructions/" rel="tag">instructions</a>, <a href="https://blog.metabrainz.org/tag/schema-change/" rel="tag">schema change</a></span><span class="comments-link"><a href="https://blog.metabrainz.org/2022/05/16/musicbrainz-schema-change-release-2022-05-16-with-upgrade-instructions/#comments">10 Comments<span class="screen-reader-text"> on MusicBrainz schema change release, 2022-05-16 (with upgrade instructions)</span></a></span> </footer> </article> <article id="post-9422" class="post-9422 post type-post status-publish format-standard hentry category-musicbrainz category-schema-change-release tag-schema-change"> <header class="entry-header"> <h2 class="entry-title"><a href="https://blog.metabrainz.org/2022/03/15/schema-change-release-may-16-2022/" rel="bookmark">Schema change release: May 16, 2022</a></h2> </header> <div class="entry-content"> <p>Today we’re announcing a MusicBrainz database schema change release planned for May 16, 2022. The majority of these changes follow the theme of improving data integrity and consistency, performance, or just cleaning up old cruft. Others relate to new features for genres and artist credits. We’re also introducing a new entity based on tags, like genres that came before it: Mood. See below for more details, including information on how these changes affect the schema or existing data. We expect people will encounter zero breaking changes, but it doesn’t hurt to double check, especially if you have a specific or non-standard use of the database!</p> <p>Here’s our list of tickets for the <a href="https://tickets.metabrainz.org/projects/MBS/versions/12016">Spring 2022 schema change</a>:</p> <a href="https://blog.metabrainz.org/2022/03/15/schema-change-release-may-16-2022/#more-9422" class="more-link">Continue reading<span class="screen-reader-text"> “Schema change release: May 16, 2022”</span></a> </div> <footer class="entry-footer"> <span class="byline"><span class="author vcard"><span class="screen-reader-text">Author </span> <a class="url fn n" href="https://blog.metabrainz.org/author/mwiencek/">mwiencek</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://blog.metabrainz.org/2022/03/15/schema-change-release-may-16-2022/" rel="bookmark"><time class="entry-date published" datetime="2022-03-15T18:55:31+00:00">March 15, 2022</time><time class="updated" datetime="2023-09-07T04:23:30+00:00">September 7, 2023</time></a></span><span class="cat-links"><span class="screen-reader-text">Categories </span><a href="https://blog.metabrainz.org/category/musicbrainz/" rel="category tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/schema-change-release/" rel="category tag">Schema Change Release</a></span><span class="tags-links"><span class="screen-reader-text">Tags </span><a href="https://blog.metabrainz.org/tag/schema-change/" rel="tag">schema change</a></span><span class="comments-link"><a href="https://blog.metabrainz.org/2022/03/15/schema-change-release-may-16-2022/#comments">2 Comments<span class="screen-reader-text"> on Schema change release: May 16, 2022</span></a></span> </footer> </article> <article id="post-8835" class="post-8835 post type-post status-publish format-standard hentry category-musicbrainz category-schema-change-release category-server category-updates tag-changelog tag-instructions tag-schema-change"> <header class="entry-header"> <h2 class="entry-title"><a href="https://blog.metabrainz.org/2021/05/18/musicbrainz-schema-change-release-2021-05-17-with-upgrade-instructions/" rel="bookmark">MusicBrainz schema change release, 2021-05-17 (with upgrade instructions)</a></h2> </header> <div class="entry-content"> <p>We’re happy to announce the release of our <a href="https://blog.metabrainz.org/2021/03/17/schema-change-release-may-17-2021/">May 2021 schema change</a> today! Thanks to all who were patient during today’s downtime as we released everything to our production servers.</p> <p>This is a fairly minor release as far as schema changes go, but please do report any issues that you come across, especially related to the display of recordings, releases and release groups on artist and release group pages.</p> <p>New, user-facing changes with this release are limited to the new ability to merge collections (<a href="https://tickets.metabrainz.org/browse/MBS-10208">MBS-10208</a>) and the addition of ratings for places (<a href="https://tickets.metabrainz.org/browse/MBS-11451">MBS-11451</a>). Additionally, <a href="https://tickets.metabrainz.org/browse/MBS-11463">MBS-11463</a> adds a new view that is used to fix a couple small requests related to disc IDs (<a href="https://tickets.metabrainz.org/browse/MBS-11268">MBS-11268</a>) and release length calculation (<a href="https://tickets.metabrainz.org/browse/MBS-11349">MBS-11349</a>). Two other changes – adding a first-release-date field to recordings (<a href="https://tickets.metabrainz.org/browse/MBS-1424">MBS-1424</a>) and support for PKCE in OAuth (<a href="https://tickets.metabrainz.org/browse/MBS-11097">MBS-11097</a>) are more or less end-user affecting but were already released on the main MusicBrainz servers a while ago. All other changes are under the hood only.</p> <p>We ran into a few complications while working on this schema change update, so we decided to postpone two changes to our October schema change to ensure only stuff we are more confident on is released. Those are <a href="https://tickets.metabrainz.org/browse/MBS-11457">MBS-11457</a>, which involves dropping the <em><code>ordering_attribute</code></em> column for series and would have had no direct effect on user experience, and <a href="https://tickets.metabrainz.org/browse/MBS-11456">MBS-11456</a>, which would have added MBIDs for artist credits. </p> <p>A few of the released new features and improvements — namely the first-release-date field for recordings, and the performance improvements to artist pages — make use of new materialized tables. These tables aren’t dumped, nor are they replicated, since they’re derived entirely from primary table data. Rather, we’ve added a new script to build them (admin/BuildMaterializedTables, included in the upgrade instructions below), and triggers to keep them up-to-date once they’re built. These triggers are created on replicated servers, too. If you use the web interface or web service at all, just note the extra step of running BuildMaterializedTables after upgrade.sh below!</p> <p>A new release of MusicBrainz Docker is also available that solves an issue for live indexing and matches this update of MusicBrainz Server. See the <a href="https://github.com/metabrainz/musicbrainz-docker/releases/tag/v-2021-05-19">release notes</a> for update instructions.</p> <p>Now, on to the instructions.</p> <h2 class="wp-block-heading">Schema Change Upgrade Instructions</h2> <p>Note: Importing the latest data dump is always a valid alternative to running <code>./upgrade.sh</code> on an existing database, if you’d prefer to also get new data in one go. Just follow the relevant instructions in INSTALL.md. The git tag is <a href="https://github.com/metabrainz/musicbrainz-server/tree/v-2021-05-19-hotfixes">v-2021-05-19-hotfixes</a>. The rest of the instructions here assume an in-place upgrade.</p> <ol class="wp-block-list"><li>Make sure <code>DB_SCHEMA_SEQUENCE</code> is set to 25 in <code>lib/DBDefs.pm</code>.</li><li>If you’re using the live data feed (your <code>REPLICATION_TYPE</code> is set to <code>RT_SLAVE</code>), ensure you’ve replicated up to the most recent replication packet available with the old schema. If you’re not sure, run <code>./admin/replication/LoadReplicationChanges</code> and see what it tells you; if you’re ready to upgrade, it should say “This replication packet matches schema sequence #26, but the database is currently at #25.”</li><li>Take down the web server running MusicBrainz, if you’re running a web server.</li><li>Turn off cron jobs if you’re automatically updating the database via cron jobs.</li><li>If you’re using the live search indexing, stop it and, assuming <code>sir</code> is under the same directory as <code>musicbrainz-server</code>, run <code>cd ../sir && python2.7 -m sir triggers && cd - && ./admin/psql < ../sir/sql/DropTriggers.sql && ./admin/psql < ../sir/sql/DropFunctions.sql</code></li><li>Switch to the new code with <code>git fetch origin</code> followed by <code>git checkout v-2021-05-19-hotfixes</code>.</li><li>Install newer dependencies Perl 5.30 or later and NodeJS 16 according to <a href="https://github.com/metabrainz/musicbrainz-server/blob/v-2021-05-17-schema-change/INSTALL.md#prerequisites">install prerequisites</a>.</li><li>Run <code>cpanm --installdeps --notest .</code> (note the dot at the end) to ensure your perl-based dependencies are up to date.</li><li>Run <code>./upgrade.sh</code> (it may take a while to vacuum at the end).</li><li>Set <code>DB_SCHEMA_SEQUENCE</code> to 26 in <code>lib/DBDefs.pm</code> as instructed by the output of <code>./upgrade.sh</code>.</li><li>If you’re using the web interface or web service, run <code>./admin/BuildMaterializedTables --database=MAINTENANCE all</code> to build new materialized tables. These will take several additional gigabytes of spaces and be kept up-to-date automatically via triggers. For more information, see INSTALL.md.</li><li>If you’re using the live search indexing, assuming <code>sir</code> is under the same directory as <code>musicbrainz-server</code>, run <code>cd ../sir && git fetch origin && git checkout v2.1.0 && python2.7 -m sir triggers && cd - && ./admin/psql < ../sir/sql/CreateFunctions.sql && ./admin/psql < ../sir/sql/CreateTriggers.sql</code> and rebuild indexes (by running <code>cd ../sir && python2.7 -m sir reindex && cd -</code>) then start it in watch mode (with <code>cd ../sir && git fetch origin && git checkout v2.1.0 && python2.7 -m sir amqp_watch</code>)</li><li>Turn cron jobs back on, if applicable.</li><li>Restart the MusicBrainz web server, if applicable. It’s also recommended you restart Redis. If you’re accessing your MusicBrainz server in a web browser, run <code>./script/compile_resources.sh</code>.</li></ol> <p>Here’s the list of resolved tickets:</p> <h2 class="wp-block-heading">New Feature</h2> <ul class="wp-block-list"><li>[<a href="https://tickets.metabrainz.org/browse/MBS-10208">MBS-10208</a>] – Allow merging collections</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11451">MBS-11451</a>] – Support ratings for places</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11463">MBS-11463</a>] – Add view to easily access medium track lengths</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11652">MBS-11652</a>] – Add support for artist series (hotfixed)</li></ul> <h2 class="wp-block-heading">Improvement</h2> <ul class="wp-block-list"><li>[<a href="https://tickets.metabrainz.org/browse/MBS-10962">MBS-10962</a>] – Speed up listing artist’s releases</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11268">MBS-11268</a>] – Show “Set track durations” on release/discids page</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11460">MBS-11460</a>] – Add materialized tables to fetch release groups by artist or track artist</li></ul> <h2 class="wp-block-heading">Database Schema Change Task</h2> <ul class="wp-block-list"><li>[<a href="https://tickets.metabrainz.org/browse/MBS-10647">MBS-10647</a>] – Add [no label] to b_del_label_special trigger for labels</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11453">MBS-11453</a>] – Change entity0_cardinality, entity1_cardinality to SMALLINT</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11459">MBS-11459</a>] – Create the edit_data_type_info function on mirrors</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11464">MBS-11464</a>] – Drop table statistics.log_statistic</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11466">MBS-11466</a>] – Change language.frequency and script.frequency to SMALLINT</li></ul> <h2 class="wp-block-heading">Previously Released Changes</h2> <ul class="wp-block-list" id="block-470c562c-21ba-4d8c-8cec-6dbd50a1b39d"><li>[<a href="https://tickets.metabrainz.org/browse/MBS-1424">MBS-1424</a>] – Add a ‘First release date’ field to recordings</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-10821">MBS-10821</a>] – Edit changing medium tracklist and format is stuck</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11097">MBS-11097</a>] – Support PKCE (Proof Key for Code Exchange) by OAuth clients</li><li>[<a href="https://tickets.metabrainz.org/browse/MBS-11431">MBS-11431</a>] – Speed up /ws/js/check_duplicates</li></ul> </div> <footer class="entry-footer"> <span class="byline"><span class="author vcard"><span class="screen-reader-text">Author </span> <a class="url fn n" href="https://blog.metabrainz.org/author/reosarevok/">reosarevok</a></span></span><span class="posted-on"><span class="screen-reader-text">Posted on </span><a href="https://blog.metabrainz.org/2021/05/18/musicbrainz-schema-change-release-2021-05-17-with-upgrade-instructions/" rel="bookmark"><time class="entry-date published" datetime="2021-05-18T03:18:02+00:00">May 18, 2021</time><time class="updated" datetime="2021-05-20T00:05:46+00:00">May 20, 2021</time></a></span><span class="cat-links"><span class="screen-reader-text">Categories </span><a href="https://blog.metabrainz.org/category/musicbrainz/" rel="category tag">MusicBrainz</a>, <a href="https://blog.metabrainz.org/category/development/updates/breaking-changes/schema-change-release/" rel="category tag">Schema Change Release</a>, <a href="https://blog.metabrainz.org/category/development/server/" rel="category tag">Server</a>, <a href="https://blog.metabrainz.org/category/development/updates/" rel="category tag">Updates</a></span><span class="tags-links"><span class="screen-reader-text">Tags </span><a href="https://blog.metabrainz.org/tag/changelog/" rel="tag">changelog</a>, <a href="https://blog.metabrainz.org/tag/instructions/" rel="tag">instructions</a>, <a href="https://blog.metabrainz.org/tag/schema-change/" rel="tag">schema change</a></span><span class="comments-link"><a href="https://blog.metabrainz.org/2021/05/18/musicbrainz-schema-change-release-2021-05-17-with-upgrade-instructions/#respond">Leave a comment<span class="screen-reader-text"> on MusicBrainz schema change release, 2021-05-17 (with upgrade instructions)</span></a></span> </footer> </article> <nav class="navigation pagination" aria-label="Posts pagination"> <h2 class="screen-reader-text">Posts pagination</h2> <div class="nav-links"><span aria-current="page" class="page-numbers current"><span class="meta-nav screen-reader-text">Page </span>1</span> <a class="page-numbers" href="https://blog.metabrainz.org/category/development/updates/breaking-changes/page/2/"><span class="meta-nav screen-reader-text">Page </span>2</a> <span class="page-numbers dots">…</span> <a class="page-numbers" 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