Percona Server for MySQL version 5.5.31-30.3

Percona is glad to announce the release of Percona Server for MySQL 5.5.31-30.3 on May 24, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.31, including all the bug fixes in it, Percona Server 5.5.31-30.3 is now the current

Percona is glad to announce the release of Percona XtraBackup 2.1.3 for MySQL on May 22, 2013. Downloads are available from our download site here and Percona Software Repositories.

This release fixes a high priority bug. It’s advised to upgrade your latest 2.1 version to 2.1.3 if you’re using the Percona XtraBackup with

Percona is glad to announce the release of Percona XtraBackup 2.1.2 for MySQL on May 18, 2013. Downloads are available from our download site here and Percona Software Repositories.

This release fixes number of high-priority bugs since version 2.1 became GA. It’s advised to upgrade your latest 2.1 version to 2.1.2. This release is the latest stable release in the 2.1 series.

Bugs Fixed:

• Using

I talk with lot of people who are really interested in Percona XtraDB Cluster (PXC) and mostly they are interested in PXC as a high-availability solution.  But, what they tend not to think too much about is if moving from async to synchronous replication is right for their application or not.

There’s a lot of different facts about Galera that come into play here, and it isn’t always obvious how they will affect your database workload.  For example:

• Transaction commit takes approximately the worst packet round trip time (RTT) between any two nodes in your cluster.
• Transaction apply on slave nodes is still asynchronous from client commit (except on the original node where the transaction is

Percona is glad to announce the release of Percona XtraBackup 2.1.0-rc1 on May 7, 2013. Downloads are available from our download site here. For this RC release, we will not be making APT and YUM repositories available, just base deb and RPM packages

This is an Release Candidate quality release and is not intended for production. If you want a high-quality, generally available release, the current stable version should be used (currently

Galera/Percona XtraDB Cluster (PXC) for MySQL is a hot thing right now and some users jump right in without enough testing. Consequently, they’re more likely to either suffer failure or issues that prevent them from moving forward. If you are thinking of migrating your workload to Percona XtraDB Cluster, make sure to go through these basics.

log_slave_updates is REQUIRED

You need to have log_slave_updates enabled on the cluster node acting as async slave for replicated events from the async master to be applied to the other

Percona Server with TokuDB

I was excited to see that TokuDB for MySQL from Tokutek is now open source. I believe this is a great technology and it was a significant restriction on the adoption when it was distributed only in a binary format with a proprietary license.

So I went and built Percona Server 5.5.30 with TokuDB’s storage engine. This is an experimental build and I am just going to play with it. The build procedure is somewhat complicated and confusing and this stage, so I want to share it with the entire MySQL

In our last 5.5 series release of Percona Server, we included a regression in the RPM packaging that prevented the server from restarting following an upgrade — instead, the server would remain stopped after the upgrade was completed regardless of its state before updating. This caused some problems for some users, especially if automatic upgrading was configured on machines with running database servers.

We’ve now

Percona Server for MySQL version 5.1.68-14.6

Percona is glad to announce the release of Percona Server  5.1.68 -14.6 on April 19, 2013 (downloads are available here and from the Percona Software Repositories). Based on MySQL 5.1.68, including all the bug fixes in it, Percona

Today’s blog post diving into the waters of the MySQL buffer pool is a cross-post from Groupon’s engineering blog, and is Part 1 of 2. Thank you to Kyle Oppenheim at Groupon for contributing to this project and post. We’ll be posting Part 2 on Thursday. I’ll be at the Percona Live MySQL Conference and Expo next week in Santa Clara, California so look for me there – I’d love to connect and talk more about MySQL buffer pools or anything else that’s on your mind!

There

The Percona Live MySQL Conference and Expo begins next Monday and runs April 22-25, 2013. Attendees will see great keynotes from leaders in the industry including representatives from Oracle, Amazon Web Services, HP, Continuent, and Percona. They can also participate in thought provoking Birds of a Feather sessions on Tuesday night and the Wednesday night Community Networking Reception will be fun and entertaining with the presentation of the Community Awards and the Lightning Talks.

If you

In addition to the problem with trx_list scan we discussed in Friday’s post, there is another issue in InnoDB transaction processing that notably affects MySQL performance – for every transaction InnoDB creates a read view and allocates memory for this structure from heap. The problem is that the heap for that allocation is destroyed on each commit and thus the read view memory is reallocated on the next transaction.

There

We just released our first alpha of Percona XtraBackup 2.1 for MySQL and with it we included the ability to encrypt backups on the fly (full documentation here). This feature is different than simply piping the backup stream through the openssl or gpg binaries, which is what some people have used in the past. A big benefit of using the built-in encryption is that multiple CPU cores can be used for encryption

Facebook is a major user of MySQL and has pushed the performance limits of the technology. Their MySQL experts have deep, hands on knowledge of the technology. I’m pleased to welcome Mark Callaghan, Software Engineer for Database Infrastructure at Facebook, back again this year to the Percona Live MySQL Conference & Expo to share his expertise. Mark was a keynote speaker at last

Percona Server for MySQL version 5.1.68-14.5

Percona is glad to announce the release of Percona Server for MySQL 5.1.68 -14.5 on March 15, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.1.68, including all the bug fixes in it, Percona Server 5.1.68 -14.5 is now the current stable release in the 5.1 series. All

I’m pleased to announce that Oracle is sending some of their top technical people to speak at the Percona Live MySQL Conference and Expo. The conference takes place April 22-25, 2013 at the Santa Clara Convention Center and Hyatt Santa Clara.

Tomas Ulin, VP, MySQL Engineering for Oracle, will present an invited keynote talk on “Driving MySQL Innovation” during the Tuesday morning opening keynotes. With the recent release of MySQL 5.6, conference attendees will hear about the latest developments of this

Percona Server for MySQL version 5.1.67-14.4

Percona is glad to announce the release of Percona Server for MySQL version 5.1.67-14.4 on March 8, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.1.67, including all the bug fixes in it, Percona Server 5.1.67-14.4 is now the current stable release in the 5.1 series. All of Percona‘s

Percona Server for MySQL version 5.5.30-30.1

Percona is glad to announce the release of Percona Server for MySQL 5.5.30-30.1 on March 7, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.30, including all the bug fixes in it, Percona Server 5.5.30-30.1 is now the current stable release in the 5.5 series. All of Percona‘s software

Percona Server on the Nexus 7: Your own MySQL Database Server on an Android Tablet

Following Roel’s post, Percona Server on the Raspberry Pi: Your own MySQL Database Server , I thought what other crazy gadget can I run Percona Server on? And having an Asus Nexus 7 Android tablet I decided to give it a try.

Anything below contains a risk that you break your tablet if

Percona is glad to announce the release of Percona Server for MySQL version 5.5.29-30.0 on February 26th, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.29, including all the bug fixes in it, Percona Server 5.5.29-30.0 is now the current stable release in the 5.5 series. All of Percona‘s software is open-source and free, all the details of the release can be found in the 5.5.29-30.0 milestone at Launchpad.

New Features:

• Ported the

MySQL 5.6 was made generally available as a production-ready solution earlier this month. This release comes about 2 years after MySQL 5.5 was released, but MySQL 5.6 contains improvements started long before that – for example, work on the Innodb Full Text Search project was started over 6 years ago, in addition with many optimizer and replication features. We’re happy to congratulate MySQL development team at Oracle with making this release happen.

In this blog post, I will not go into a features overview of MySQL 5.6. You can check out Release Notes for a good overview as well as many blog posts and articles written on this matter. Instead, I will tell you what is

In this post I will describe a non-trivial way to authenticate users in Percona Sever for MySQL. Percona Server comes with PAM authentication plugin, which allows you to do a lot of cool things, such as: OS authentication, LDAP authentication, even RSA Secure Server authentication (which is useful if you are required a PCI-compliance), and use Google Authenticator, which is the topic of this post.

You can use a smartphone for two-factor authentication with Percona Server for MySQL

With two-factor authentication a user is required to enter not only password, but to have an additional security token, which in the case with Google Authenticator

With our newest release of Percona XtraDB Cluster, I would like to highlight a very nice ability to recovery a node and bring it back to the cluster with an incremental transfer after a crash.
This feature was available even in previous release, but now I want to give some details.

So, MySQL crashes from time to time and this a fact of life. HA solution is exactly needed to deal with an one node failure and allowing whole cluster continuing to work.

The idea is, if a node crashed, after it recovered – we just transfer all changes that happened in the cluster, while the node was down. It sounds easy in words, but proven hard when it comes to implementation. It all comes to the

Percona is glad to announce the release of Percona XtraDB Cluster on January 30th, 2013. Binaries are available from downloads area or from our software repositories.

Bugs fixed:

• In some cases when node is recovered variable threads_running would become huge. Bug fixed #1040108 (Teemu Ollakka).
• Variable wsrep_defaults_file would be set up to the value in the last configuration file read. Bug fixed by keeping the value found in the top configuration file. Bug fixed

We continue to improve Percona XtraBackup, and today I would like to give a preview for one feature which comes in next Percona XtraBackup 2.1 release.

This feature is “Compact backups”, and let me explain what it does.
As you may know InnoDB PK (Primary Key) contains all data, and all secondary indexes are only subset of columns of Primary Key. So in theory we can store only PK, and re-build secondary indexes as we need. Well, now it is possible not only in theory.

To create a compact backup you should use
innobackupex --compact
and it will create a backup

Percona is glad to announce the release of Percona Server 5.1.67-14.3 on January 23rd, 2013 (Downloads are available here and from the Percona Software Repositories).

Based on MySQL 5.1.67, including all the bug fixes in it, Percona Server 5.1.67-14.3 is now the current stable release in the 5.1 series. All of Percona‘s software is open-source and free, all the details of the release can be found in the 5.1.67-14.3 milestone at Launchpad.

Bugs Fixed:

• Fixed the upstream bug

Percona is glad to announce the release of Percona Server 5.5.29-29.4 on January 23rd, 2012 (Downloads are available here and from the Percona Software Repositories).

Based on MySQL 5.5.29, including all the bug fixes in it, Percona Server 5.5.29-29.4 is now the current stable release in the 5.5 series. All of Percona‘s software is open-source and free, all the details of the release can be found in the 5.5.29-29.4 milestone at Launchpad.

Bugs Fixed:

• Fixed the upstream bug

Percona is glad to announce the release of Percona XtraBackup 2.0.5 on January 23rd, 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:

• New option --defaults-extra-file has been introduced. This option specifies from what extra file to read the default MySQL options before the standard defaults-file. It can be used to load the user/password combination for the dedicated backup user from a separate configuration file, to avoid storing it in the crontab or a script somewhere in the system.

Bugs

Percona Server Wins Developer Week 2013 Award; Named Top Innovator in SQL Technologies Category

Percona Server has won a 2013 DeveloperWeek Best of Tech award, being named Top Innovator in the SQL Technologies category!

We’re proud to accept this award, which is determined by a combination of peer voting and review from an independent panel of judges. Thank you to everyone who voted for Percona Server!

From our press release:

Percona is glad to announce the release of Percona Server 5.1.66-14.2 on January 15th, 2013 (Downloads are available here and from the Percona Software Repositories).

Based on MySQL 5.1.66, including all the bug fixes in it, Percona Server 5.1.66-14.2 is now the current stable release in the 5.1 series. All of Percona‘s software is open-source and free, all the details of the release can be found in the 5.1.66-14.2 milestone at Launchpad.

New Features:

• Multiple bitmap file