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While the index merge access types certainly are useful for a number of queries, there has been some frustration expressed both from customers and the community about how it...

1. is not used when it should have been
2. is used when ref access is obviously better
3. merges suboptimal indexes
4. is too restricted in which conditions can be used

I could come up with numerous examples of related bugs and feature requests dating back more than six years. To list a few: 17673, 30151, 23322, 65274, …

Hi!

Thanks everyone who attended my hands-on lab on MySQL Cluster at MySQL Connect last Saturday.

The following are the links for the slides, the HOL instructions, and the code examples.

I'll try to summarize my HOL below.


Aim of the HOL was to help attendees to familiarize with MySQL Cluster. In particular, by learning:

1. the basics of MySQL Cluster Architecture
2. the basics of MySQL Cluster Configuration and Administration
3. how to start a new Cluster for evaluation purposes and how to connect to it

We started by …

Percona is glad to announce the release of Percona XtraBackup 2.0.3 on October 1st, 2012. Downloads are available from our download site here and Percona Software Repositories.

This release is the current GA (Generally Available) stable release in the 2.0 series.

New Features:

• innobackupex now supports new –move-back option that can be used instead of –copy-back in case there isn’t enough free disk space on the server to copy files. As this option removes backup files, it must be used with caution.

Bugs Fixed:

• Symlink for innobackupex-1.5.1 binary has been broken in the previous version of XtraBackup. Bug …

I’ve just finished presenting my work on adaptive fault detection at Surge and Percona Live NYC. My slides are embedded below.

Executive Summary of Parallel Universe in Powerpoint Presentation is now available at www.paralleluniverse-inc.com/technology.shtml .

Define a user like this:

GRANT ALL ON *.* TO 'myuser'@'localhost' IDENTIFIED BY 'super$ecret';

Then try a PHP script like this:

<?php
mysqli_connect("localhost", "myuser", "super$ecret");
?>

What happens and why? How could you avoid it?

And for glory, what single line could you add that would prevent the error, without making any changes to the mysqli_connect line?

As of today, Oct 1, yours truly is again working closer to the MySQL community. I have had 2 great years at Recorded Future, no doubt, and I have had a chance to work with some cool technologies and learn quite a few things I didn't know before. But not it's tim to high the sky, and I am from today working as Sales Engineer at SkySQL.

This is going to be fun, I will keep up my blogging, I hope to keep up my MongoDB investigations and above all I'll be involved with the SkySQL Cloud offerings!

That's all for now, but if you know me, that's not the end of it, far from it!

Cheers
/Karlsson

The conference is over.  I had a great time and it was very fun to meet both old and new MySQL users.  It was a packed couple of days and we managed to present quite a lot.  I am energized by all the positive feedback we got on especially MySQL 5.6, Performance Schema, the Parallel MySQL Enterprise Backup 3.8, the Connector Enhancements, and the MySQL Utilities. Tomas keynote has the mayor things we announced. Here are some highlights from my team:

1. New release of Connector Python

We were are happy to announce the new MySQL Connector/Python 1.0.7 as Generally Available.  Python is an important language and it feels great that we now fully support this.

2. New release of faster MySQL Enterprise Backup 3.8

A lot of users want really fast backup and we have now re-factored MySQL Enterprise Backup into a new …

MySQL connect finished Sunday with amazing sessions and a street party. Generally the reviews of the show have been very good with suggested tweaks for 2013. Having EIGHT tracks at the same time along with some hands on labs seemed to be too much of a good thing for many. Most wanted to be in two or three session and a hands on lab at the same time. There was plenty of ‘red meat’ technical content for all levels of attendees.

The session that generated the most feedback was Mark Leith’s Profiling with the Performance Schema as it had more than enough material for two or three sessions. What Mark demonstrated was the hows and whys of examining queries at a level never reachable by mere DBAs when searching for extra query performance. Please find the presentation on line ase you will find it jaw dropping amazing. Many ‘old time MySQL-ers’ were happily stunned by this new feature.

Another gem of a session …