MariaDB 10.0 had a stable release last month. It is a good time to take a look and see how it compares to the stable version of MySQL, MySQL 5.6 (as for Percona Server, it doesn’t have its own optimizer features).
Changelogs and release notes have all the details, but it’s difficult to see the big picture. So I went for diagrams, and the result is a short article titled What is the difference between MySQL and MariaDB query optimizers. It should give one a clue about what are the recent developments in query optimizers in MySQL world.

In case you’re interested in details about optimizer features in MariaDB 10.0, I’ve shared slides from a talk about MariaDB 10.0 query optimizer.

May 7, 2014 By Severalnines

Following the release of ClusterControl 1.2.6 a couple of weeks ago, we are now looking forward to demonstrating this latest version of the product on Tuesday next week, May 13th.

This release contains key new features (along with performance improvements and bug fixes), which we will be demonstrating live during the webinar. 

Highlights include:

• Centralized Authentication using LDAP or Active Directory
• Role-Based Access Control
• OpenStack: Galera Deployment Automation
• Hybrid setups with Galera and Asynchronous MySQL Replication
• Manage single instance …

SAN JOSE, CA– May 6, 2014 – Continuent, Inc., a leading provider of open source database clustering and replication solutions, today announced that their recently announced Tungsten Replicator 3.0 solution has been certified by Cloudera, the leader in enterprise analytic data management powered by Apache Hadoop™. Continuent Tungsten Replicator 3.0 enables organizations to quickly and easily 

This is the blog of the MariaDB Foundation in particular and the MariaDB project in general. It is used to announce new MariaDB versions, for posts from MariaDB developers about new features, and for news from or about the MariaDB Foundation itself, among other things. For many this is the MariaDB blog, and on behalf of the MariaDB Foundation, welcome! We’re glad you’re here. Thanks for stopping by!

What you may not know is that there’s another MariaDB blog over at https://mariadb.com/blog run by the fine folks at SkySQL (full disclosure: I work for SkySQL, but my posts here are on behalf of the MariaDB project and the Foundation). This other MariaDB blog contains posts about SkySQL’s commercial MariaDB offerings (naturally) but also a lot of other …

I’ve had this question several times when presenting and once via an internal email thread so I figure I might as well write about it: What is the default transactional engine in MariaDB 10.0? The answer is simple – it is XtraDB.

However this answer has some history: initial releases of MariaDB 10 actually shipped with InnoDB from MySQL 5.6. Only in 10.0.9 RC did the default switch back to being XtraDB. As MariaDB users previously know, XtraDB was the default InnoDB in 5.1, 5.2, 5.3, and 5.5 too. As always, you can switch easily between InnoDB/XtraDB – read more in: Using InnoDB instead of XtraDB. 

How do you tell what version of InnoDB or XtraDB you are running? Simply, run: SHOW GLOBAL VARIABLES LIKE 'innodb_version';

MariaDB 10.0 (read more: …

While at the keynote of Tomas Ulin at Percona Live MySQL Conference & Expo Santa Clara 2014, he asked the audience what they were running, and most of the audience was on MySQL 5.5 while about 15% of the audience was on MySQL 5.6. This number is steadily increasing I’m sure, so one thing that becomes important is that people will probably start turning on Global Transaction Identifiers (GTIDs). 

As you may already know, MariaDB 10 has a different implementation of Global Transaction ID. To me, this poses a problem in a mixed use environment (or even a migration scenario). Which is why …

There are many MySQL related IRC discussion channels as the ecosystem itself grows. I join the following. Are there any that I’m missing?

Freenode (irc.freenode.net):

• #mysql – main channel for all kinds of end user MySQL related discussions (the noisiest of the lot, naturally)
• #maria – main channel for all kinds of MariaDB related discussions
• #webscalesql – for all kinds of WebScaleSQL discussions
• #percona – main channel for all kinds of Percona related discussions
• #tokutek – main channel for Tokutek discussions (TokuDB or TokuMX)
• SkySQL-specific channels: #maxscale and #mariadb-mgr

OFTC (irc.oftc.net):

• #debian-mysql – for all kinds of Debian MySQL related bits (packaging, bugs, etc.)

Related posts:

1. …

The MariaDB project is pleased to announce the immediate availability of MariaDB Galera Cluster 5.5.37. This is a Stable (GA) release.

See the Release Notes and Changelog for detailed information on this release and the What is MariaDB Galera Cluster? page in the MariaDB Knowledge Base for general information about MariaDB Galera Cluster.

Download MariaDB Galera Cluster 5.5.37

…

In January I wrote my first post about node.js and MariaDB . In February I continued with a second post about using jQuery and some GIS calculations. Now it is time for the third and this time the main focus is not so much on GIS functionality, but instead on the capabilities MariaDB has for handling piles of unstructured data. In this case I’ll be focusing on crunching a pile of XML files without importing the XML data itself.

MariaDB 10.0, which had its GA launch in early April, includes the Connect engine. It has been developed to dynamically access all …

It’s quite exciting to see the amount of MariaDB books out there (first GA release of software: February 2010).

From left-to-right:

1. MariaDB Crash Course (August 2011)
2. Getting Started with MariaDB (October 2013)
3. …