Over the past few days extensive conversations around a new security vulnerability in MariaDB and MySQL have taken place.

It all started as a chain reaction when Monty Program publicly disclosed information about the flaw they had found and about how to make sure your MariaDB and MySQL installations can be fixed. The initial information got assigned the security vulnerabitlity identifier CVE-2012-2122 and the contents can be seen e.g. here http://seclists.org/oss-sec/2012/q2/493.

The bug was found two months ago on April 4th.

Before disclosing the information publicly, given the seriousness of this bug and considering the millions of MySQL and MariaDB installations deployed worldwide, Monty Program informed the biggest distributors of MySQL and MariaDB as a precaution.

On April 6th, Monty Program informed Oracle about it in bug report …

Are you looking to expand your knowledge about MySQL and MariaDB database solutions?

Well, you’re in luck! SkySQL is introducing an exclusive collection of educational videos featuring some of the industry’s leading experts on the MySQL database and related technologies. View informative, technical talks on a variety of topics, from the experts at SkySQL, MariaDB, Calpont InfiniDB, Continuent, ScaleDB, Severalnines, Sphinx, Webyog, and others.

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Retrouvez SkySQL et ses partenaires sur le stand C21 du Salon Solutions Linux 2012 au CNIT à Paris du 19 au 21 juin

Cette année, le Salon Solutions Linux à Paris coincide avec la Fête de la Musique. C’est donc avec enthousiasme que nous nous préparons pour cet évènement annuel incontournable dédié aux logiciels libres et à l’Open Source.

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I found time to continue my previous work on group commit for the binary log in MariaDB.

In current code, a (group) commit to InnoDB does not less than three fsync() calls:

1. Once during InnoDB prepare, to make sure we can recover the transaction in InnoDB if we crash after writing it to the binlog.
2. Once after binlog write, to make sure we have the transaction in the binlog before we irrevocably commit it in InnoDB.
3. Once during InnoDB commit, to make sure we no longer need to scan …

My colleague who is a Windows guru taught me how to do very basic things with the Windows profiler. While this stuff is primitive, the sad truth is that many people don’t know even this little about Windows, me including. I’ll keep the hints here, and hopefully will learn more with time.

• Use RelWithDebInfo builds, Debug build will screw the picture, it will tell you _db_enter is the most expensive function;

• Start mysqld;

• Use x64 VS command prompt:

Start => All Programs => MS Visual Studio 2010 => Visual Studio Tools => Visual Studio x64 Win64 command prompt

• Set _NT_SYMBOL_PATH to the package bin directory, so mysqld.pdb can be found, and start the IDE:

set _NT_SYMBOL_PATH=... && devenv.exe

• In the VS command prompt, run

vsperfcmd /start:sample …

The South East LinuxFest is this weekend (June 7-9) in Charlotte, North Carolina and SkySQL will be attending the conference both as a sponsor and with talks. 

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As described in the first article of this series, Tungsten Replicator can replicate data from MySQL to Vertica in real-time.  We use a new batch loading feature that applies transactions to data warehouses in very large blocks using COPY or LOAD DATA INFILE commands.  This second and concluding article walks through the details of setting up and testing MySQL to Vertica replication.

To keep the article reasonably short, I assume that readers are conversant with MySQL, Tungsten, and Vertica.  Basic replication setup is not hard if you follow all the steps described here, but of course there are variations in every setup.  For more information on Tungsten check out the Tungsten Replicator project at code.google.com site well as …

Real-time analytics allow companies to react rapidly to changing business conditions.   Online ad services process click-through data to maximize ad impressions.  Retailers analyze sales patterns to identify micro-trends and move inventory to meet them.  The common theme is speed: moving lots of information without delay from operational systems to fast data warehouses that can feed reports back to users as quickly as possible.

Real-time data publishing is a classic example of a big data replication problem.  In this two-part article I will describe recent work on Tungsten Replicator to move data out of MySQL into Vertica at high speed with minimal load on DBMS servers.  This feature …

The best (and truly the only) MySQL multi-master, multi-site solution on the market gets even better! Continuent is happy to announce immediate availability of Continuent Tungsten 1.5.New Continuent Tungsten 1.5 allows you to build multi-site, disaster recovery (DR) and multi-master solutions with ease:

Multi-Master Operations - Tungsten can support your multi-master operations today by linking

This is the third blog post in the series of blog posts leading up to the talk comparing the optimizer enhancements in MySQL 5.6 and MariaDB 5.5. This blog post is targeted at the join related optimizations introduced in the optimizer. These optimizations are available in both MySQL 5.6 and MariaDB 5.5, and MariaDB 5.5

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