{"id":2247,"date":"2012-02-05T03:33:08","date_gmt":"2012-02-05T08:33:08","guid":{"rendered":"http:\/\/www.bytebot.net\/blog\/?p=2247"},"modified":"2012-02-05T03:33:13","modified_gmt":"2012-02-05T08:33:13","slug":"new-mysql-5-6-features-by-oli-sennhauser","status":"publish","type":"post","link":"https:\/\/www.bytebot.net\/blog\/archives\/2012\/02\/05\/new-mysql-5-6-features-by-oli-sennhauser","title":{"rendered":"New MySQL 5.6 Features by Oli Sennhauser"},"content":{"rendered":"<p>First talk at FOSDEM MySQL Devroom by <a href=\"http:\/\/www.shinguz.ch\/\">Oli Sennhauser<\/a>, of <a href=\"http:\/\/fromdual.com\/\">FromDual<\/a>. Quick notes\/liveblog of the talk, plus links from a quick search.<\/p>\n<p>New Release Model: starts with at least in beta quality, milestone releases are RC quality (every 3-6 months), between milestones new features are allowed, GA releases every 12-18 months, no more than 2 releases in active support. There is also MySQL Labs, in where features can make it into a release model, but not necessarily.<\/p>\n<p>Oli&#8217;s guess: MySQL 5.6 GA in April 2012 (Collaborate) or June 2012. As a consequence, MySQL 5.0 and MySQL 5.1 will be EOL probably by April this year.<\/p>\n<p>New improvements in partitioning: explicit partition selection, exchanging partitions (good for ETL jobs).<\/p>\n<p>New improvements in InnoDB: InnoDB INFORMATION_SCHEMA has got some new entries. Buffer (INNODB_BUFFER), Fulltext (INNODB_FT), Metrics (INNODB_METRICS), Data Dictionary (INNODB_SYS). The InnoDB Monitor is now obsolete. innodb_purge_threads can be set &gt; 1. Kernel mutex split which should lead to improved concurrency. Persistent optimizer statistics (since InnoDB used to do random dives, so when you do a mysqldump, things can be different) &#8211; you can do SET GLOBAL innodb_analyze_is_persistent = 1; (read more: <a href=\"http:\/\/blogs.innodb.com\/wp\/2011\/04\/innodb-persistent-statistics-at-last\/\">InnoDB Persistent Statistics at last<\/a>, <a href=\"http:\/\/oysteing.blogspot.com\/2011\/05\/innodb-persistent-statistics-save-day.html\">InnoDB Persistent Statistics Save the Day<\/a>).<\/p>\n<p>New improvements in optimizer: ORDER by on non-indexed columns, Multi Range Read (MRR), Index Condition Pushdown (ICP), query execution plan for DML statements, Batched Key Access (BKA). There is also optimizer tracing.<\/p>\n<p>There is now some new instrumentations in Performance Schema (introduced in MySQL 5.5). There is also improved replication features, but that will be covered in a later talk.<\/p>\n<p>Fractional seconds (microseconds) is introduced in MySQL 5.6. GET DIAGNOSTICS for stored procedures. Pluggable authentication (socket). memcached\/InnoDB still in labs, hasn&#8217;t made it to a milestone release. Some 400+ bugs have been fixed. Lots of cleanup&#8217;s (old unused variables, commands removed).<\/p>\n<p>Pay attention to MySQL 5.6 incompatible changes when you plan to upgrade.<\/p>\n<p>Probably some good resources: <a href=\"http:\/\/dev.mysql.com\/tech-resources\/articles\/whats-new-in-mysql-5.6.html\">What&#8217;s New in MySQL 5.6<\/a>, <a href=\"http:\/\/dev.mysql.com\/tech-resources\/articles\/mysql56-labs-july2011.html\">MySQL 5.6 (Early Access Features) &#8211; InnoDB &amp; Replication<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>First talk at FOSDEM MySQL Devroom by Oli Sennhauser, of FromDual. Quick notes\/liveblog of the talk, plus links from a quick search. New Release Model: starts with at least in beta quality, milestone releases are RC quality (every 3-6 months), between milestones new features are allowed, GA releases every 12-18 months, no more than 2 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[23],"tags":[1332,1333,1334],"class_list":["post-2247","post","type-post","status-publish","format-standard","hentry","category-mysql","tag-fosdem","tag-mysql-5-6","tag-oli-sennhauser"],"jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/p4vJD-Af","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.bytebot.net\/blog\/wp-json\/wp\/v2\/posts\/2247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bytebot.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bytebot.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bytebot.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bytebot.net\/blog\/wp-json\/wp\/v2\/comments?post=2247"}],"version-history":[{"count":2,"href":"https:\/\/www.bytebot.net\/blog\/wp-json\/wp\/v2\/posts\/2247\/revisions"}],"predecessor-version":[{"id":2249,"href":"https:\/\/www.bytebot.net\/blog\/wp-json\/wp\/v2\/posts\/2247\/revisions\/2249"}],"wp:attachment":[{"href":"https:\/\/www.bytebot.net\/blog\/wp-json\/wp\/v2\/media?parent=2247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bytebot.net\/blog\/wp-json\/wp\/v2\/categories?post=2247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bytebot.net\/blog\/wp-json\/wp\/v2\/tags?post=2247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}