Dear Community,

It is time to announce the next version of backup software from Percona - XtraBackup 1.1.

The list of changes in version 1.1 includes:
Changelog:

• XtraBackup is built on a base of MySQL 5.1.44 with InnoDB plugin 1.0.6
• Added --host option
• tar4ibd can treat over 64GB file
• tar4ibd is default method for stream, even tar is specified
• the binary supports compressed tables and Baraccuda format

Fixed bugs:

• Bug #529874: innobackupex cannot treat exit code of xtrabackup executable
• Bug #498660: xtrabackup not handling barracuda compressed table format
• …

I got a comment from a reader about the Naive Trees section of my presentation SQL Antipatterns Strike Back. I've given this presentation at the MySQL Conference & Expo in the past.I'd also like to mention that I've developed these ideas into a new book, SQL Antipatterns: Avoiding the Pitfalls of Database Programming. The book is now available in Beta and for pre-order from Pragmatic

The binary version for MySQL Cluster 7.1.2a has now been made available at http://dev.mysql.com/downloads/cluster/ under the Development tab.

Note that this beta load contains the latest NDBINFO and MySQL Cluster Connector for Java (ClusterJ) enhancements – please try them out and provide feedback (any bugs should be reported through bugs.mysql.com.

A description of all of the changes (fixes) that have gone into MySQL Cluster 7.1.2a (compared to 7.1.1) can be found in the MySQL Cluster 7.1.2a Change Log.

Download Tungsten Enterprise v. 1.2.3 (Release date March 16, 2010) This is a maintenance release that adds the following new features plus a number of important fixes: Completely updated documentation, including expanded description on cluster concepts, management procedures, and connectivity options New features for SaaS vendors include transparent session consistency for

A little two-part quiz. If you get the first one without peeking, you're worth your pay as a DBA. If you get the second one without peeking, you may tell your boss that some random guy on the Internet says you deserve a raise.

Start with a text file, 'test.txt', with these three lines:

1
1
2

Set up the test in MySQL:

DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (id int primary key);
LOAD DATA INFILE 'test.txt' INTO TABLE t1;

This gives "ERROR 1062 (23000): Duplicate entry '1' for key 'PRIMARY'", which is expected.

What's in the table?

Show Answer ▼

It depends. If the engine is MyISAM, then you'll have one row: the first '1' from the file was inserted, everything else was skipped. If the engine is InnoDB, you'll have no rows, because the transaction would rollback. So either 1 row or 0 rows.

…

Brian wrote recently Where did all of the MySQL Developers Go?, while over in Drizzle land they have been accepted for the Google Summer of code along with many other open source projects. MySQL from my observation a noticeable absentee.

Historically, the lack of opportunity to enable community contributions and see them implemented in say under 5 years, has really hurt MySQL in recent times. There is plenty of history here so that’s not worth repeating. The current landscape of patches, forks and custom MySQL binaries for storage engine provider has provided a boom of innovation that sadly is now lost from the core MySQL product.

In Drizzle, community contribution is actively sought and a good portion of committed code is not from the core Drizzle …

Ages ago I created a Twitter account to get some free app. I figured some nobody was following me I didn't have to feel like a guilty spammer. For some odd obsession to honesty probably I did use my proper name and sooner or later people started following me despite me having only put out a single spam message. So on very few occasions I tried out tweeting (still feels weird using that word) since then, obviously I have never used it to get a free app again by spamming. Anyways I have now decided that for small blurps about technical stuff I will from now on use Twitter, thereby sparing my Facebook friends from such gibberish. In turn my developer friends on Facebook that do not care about what I have to say about Frisbee, DJing or politics can start removing me from Facebook. Actually I might just do this myself, because its FUCKING ANNOYING that so many people multi spam their status …

I had an interesting conversation with Sheeri yesterday. She had pointed out that today was Ada Lovelace Day, a day devoted to highlight and thank the many women in the Information Technology industry for their contributions. She suggested that if I wanted to blog about it she would find that appropriate, given what we’ve achieved here at Pythian.

First, I consider that a huge compliment. And then, a distant second, I told Sheeri – no I don’t think I’ll blog about it, that’s not my thing.

This is the IM conversation that came out of that email exchange when Sheeri and I connected about an hour later. You may or may not find it interesting, but ultimately I thought it was interesting enough to share.

tl;dr: Happy Ada Lovelace Day.

expanded version:

Paul Vallee:
hey sheeri!
Sheeri K. Cabral: …

I guess that it’s time for the 3rd annual “Ravelry Runs On” roundup. The last two were in March 2008 and March 2009.

This year, our traffic increased by 50% to 5,000,000 page views and 15 million Rails requests per day. We made very few changes to our architecture in 2009 but we did add a new master database server after our working set of data outgrew our memory and IO capacity.

This summary is more detailed then the last two and I’ve broken it up into rough sections.

Physical Network

We own our own servers and colocate then in a datacenter here in Boston. The datacenter provides us with a cooled half cabinet, redundant power, and a blend of premium (Internap, Savvis) bandwidth. We do the rest.

I use …

Here’s what Pythian is cooking up for MySQL Conference this year.

Monday, April 128:30am: Get out of bed lazy bones and head to Ballroom B

… because you’re going to want to attend Sheeri K. Cabral‘s tutorial in two parts:

MySQL Configuration Options and Files: Basic MySQL Variables (Part 1)

Unlock all the information the MySQL server can give you! MySQL has many status variables that show how well your environment utilizes its resources. There are many system variables that can be set and changed to tune the server.
Read more.
Add to your personal schedule at …