My previous blog entry on MySQL scalability on the T5440 is now completed by a Sun BluePrint that you can find here.

See you next time in the wonderful world of benchmarking....

My previous blog entry on MySQL scalability on the T5440 is now completed by a Sun BluePrint that you can find here.

See you next time in the wonderful world of benchmarking....

Today I come back from the dentist, if that wasn’t bad enough news, I get an email from Google AdWords titled Your Google AdWords Approval Status.

In the email, all my AdWords campaigns are now disapproved, because of:

SUGGESTIONS:
-> Ad Content: Please remove the following trademark from your ad:
mysql.

Yeah right. I can’t put the word ‘MySQL’ in my ads. How are people to now find me? It would appear that many ads have been pulled not just mine. Is this a proactive measure by Google? is this a complaint from the MySQL trademark holder Sun Microsystems?

I’d like any comment, feedback or suggestions on how one can proceed here.

It reminds me of the days CentOS advertised itself as an “Open source provider of a popular North American Operating System”, or something of that nature.

One of the pain points of upgrading any software package is knowing which version to upgrade to when the time comes. With software that is frequently updated, like MySQL, choosing a version that provides new features and addresses issues you are aware of, without also being exposed to other issues is an added complexity.

This week, I added another new feature to our documentation, spurred on by Baron Schwarz’s idea for a ‘reverse changelog’.

As Baron noted, the idea is to report the bugs reported in a specific version, and then provide information about the version in which each bug was fixed, so that you can determine which version you need to choose when upgrading to avoid that bug.

You can see the output for 5.1: …

The MySQL marketplace today is far more complex then simply choosing between a particular version of MySQL that Sun/MySQL produces.
The MySQL server product in general is released under the GNU General Public License (GPL) v2, however you should carefully review the MySQL Legal Policies as a number of exceptions and different license agreements operate for companion tools such as MySQL Cluster, MySQL client libraries and documentation for example.

Looking into the MySQL ecosystem for products, I’ve produced the following categories:

• Sun/MySQL Official Products
  • MySQL Versions
• MySQL Variants
  • Community
  • Enterprise
  …

I’ve just started using the CSV engine for a practical application and I’ve come across a few subtle and unexpected issues/limitations.

First, you can’t create any columns in your CSV table nullable.

mysql> create table t1(i INT) ENGINE=CSV;
ERROR 1178 (42000): The storage engine for the table doesn't support nullable columns

RTFM shows this was introduced in 5.1.23. See CSV Limitations

The second and more annoying was creating a CSV table, inserting a sample row (just to check the syntax), then replacing the file ([datadir]/[schema]/[table].CSV) with the same format, but with additional generated rows. This was to no avail when attempting to SELECT from the table.

The solution was to do a REPAIR TABLE [table] in order to see the newly refreshed data.
Futhermore, some more RTFM shows in …

The March NY MySQL Meetup featured a presentation from Infobright, a data warehousing solution built on the MySQL Product.

With a pitch of “Simplicity, Scalability and low TCO” I became more impressed with the capability to delivery on these as the presentation proceeded. Here are some highlights.

• The company and product has been around for a few years. Infobright started as a compression engine to sit beside Teradata, providing a significant cost saving to clients, and allowing a two way data transfer between Teradata.
• In September 2008, a open source community edition was released, called ICE. (Which I didn’t know)
• The technology is based on a Rough Set theory, a mathematical approach
• Using a …

As I referenced in my prior entry, I'm reviewing Sun's three major strategic imperatives, and our progress going in to next fiscal year. Our strategic imperatives, in order, are:

1. Technology Adoption
2. Commercial Innovation
3. Efficiently Connecting 1. and 2.

This entry focuses on the second, Commercial Innovation, and reviews our core revenue products, services and strategies.

By now, you understand Sun's approach to growing the market - driving adoption of key technologies drives Sun's addressable market. Once you're using one of our fundamental technologies, Sun's innovations focused on those technologies are relevant to you. The beauty of free distribution is you don't have to pick customers, they pick you.

Three very …

Monitoring MySQL Memory is a rather critical task because you can’t limit MySQL’s usage of physical memory resources. Improperly configured servers running MySQL can crash because you don’t understand memory usage.

MySQL uses memory in a number of different ways. Using the Oracle analogy, you can divide the mysqld memory usage into main areas of:

• SGA - System Global Area
• PGA - Process Global Area

The SGA is the footprint that MySQL uses for startup. This is attributed to the base footprint of the mysqld process and a number of buffers including:

• key_buffer_size - For MyISAM Indexes (note you can define multiple key_buffer’s The MyISAM Key Cache) …

Two more adoption stories; they both use GFv2 and MySQL Server, but while one is a traditional Java EE story, the other is a Rails App ported from Mongrel.

The MidwifeMate application spans the web tier (JSF/Facelets), EJBs and JPA. They use Hibernate talking to a MySQL Server and develop on Eclipse using the …