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Announcing MariaDB 5.5.23 GA

Monty Program Group Blog — Wed, 11 Apr 2012 18:42:32 +0000

We are pleased to announce the immediate availability of MariaDB 5.5.23. This stable (GA) release incorporates MariaDB 5.3.6 and MySQL 5.5.23, some performance improvements, and bug fixes.

Please see the What is MariaDB 5.5 page for an overview of MariaDB 5.5.

Sources, binaries, and package downloads are available from our network of MariaDB mirrors. Debian and Ubuntu packages are available from our mirrored apt repositories. We have a sources.list generator for creating sources.list entries.

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Announcing MariaDB 5.3.6

Monty Program Group Blog — Mon, 09 Apr 2012 08:12:29 +0000

We are pleased to announce the immediate availability of MariaDB 5.3.6. This stable (GA) release incorporates MySQL 5.1.62, some performance improvements, and several bug fixes.

Most importantly, MariaDB 5.3.6 includes a fix for a bug which, under certain rare circumstances, allowed a user to connect with an invalid password. This is a serious security issue. We recommend upgrading from older versions as soon as possible.

Please see the What is MariaDB 5.3 page for an overview of MariaDB 5.3.

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Announcing MariaDB 5.3.6

Monty Program Group Blog — Mon, 09 Apr 2012 08:12:29 +0000

We are pleased to announce the immediate availability of MariaDB 5.3.6. This stable (GA) release incorporates MySQL 5.1.62, some performance improvements, and several bug fixes.

Please see the What is MariaDB 5.3 page for an overview of MariaDB 5.3.

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Announcing MariaDB 5.1.62 and 5.2.12

Monty Program Group Blog — Fri, 06 Apr 2012 13:53:45 +0000

We are pleased to announce the immediate availability of MariaDB 5.1.62 and MariaDB 5.2.12. Both of these stable (GA) releases incorporate MySQL 5.1.62 and several bug fixes.

Most importantly, MariaDB 5.1.62 and 5.2.12 include a fix for a bug that under certain rare circumstances allowed a user to connect with an invalid password. This is a serious security issue. We recommend upgrading from older versions as soon as possible.

Please see the What is MariaDB 5.1 page for an overview of MariaDB 5.1, and the What is MariaDB 5.2 page for an overview of MariaDB 5.2.

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Tungsten 2.0.5 with more power and ease of use

Giuseppe Maxia — Mon, 05 Mar 2012 23:27:00 +0000

Tungsten Replicator 2.0.5 was released this week-end. The release notes have quite a long list of bug fixes. Thanks to all the ones who have submitted bug reports, and fixes! There are a couple of new features as well. The replicator includes now a slave prefetch service. Unlike parallel replication, this feature works fine with a single database, and provides performance improvements that in many cases solve the slave lagging problems. This was a bitch of a feature to get right. Many have tried it, many have experienced various degrees of success, and several failures. We started with the bold assertiveness of the brave after an exciting talk at Percona Live in October, and I was sorry to report one bad performance result after the other for a few months, until finally the tide turned, and the good results started showing up, and improving! The key to success was the realization that the prefetch is hard to set up and tune right, but also the need for multiple threads that do the pre-fetching efficiently. Since we had already an efficient engine that we use for parallel replication, the final design started bearing fruits at the end of January, and became definitely good and reliable in February. The other noteworthy improvements were made in the installer. Thanks to the many users who have tried it and reported usability issues, we have made the Tungsten Replicator installation a much better experience, and a powerful tool. The best proof of the installer maturity is that the prefetch installation required little work to be implemented and it worked flawlessly at the first attempt! Other improvements in the tools include trepctl and thl better understanding of their environment. They no longer require a service name if there is only one installed in a given host, and they provide more instrumentation for parallel replication, pre-fetching, and for the processing of huge transactions (quite common when dealing with RBR). This version was also the first with Oracle to MySQL support. This is not open source, however. As this feature requires substantial investments, it is not possible to release it as the rest of the replicator. But the list of goodies is not over yet. The feature that probably more than anything else has been used in the past months has been the star schema topology, which is something that was probably possible in 2.0.4, but nobody had tried it before.

We are not stopping here, however. The investment in the installer has given us the know-how necessary to improve and simplify the installation of our flagship product (Tungsten Enterprise) which is about to ship with similar usability enhancements. We have plans to enhance multiple master replication and management, we are developing powerful parallel processing administration tools, and we are also trying to simplify the powerful filters that Tungsten provides. There are more open source releases to discuss, but these will require more than one article to be described conveniently. We have released more tools in the Tungsten Toolbox project. A better Tungsten Sandbox, capable of installing every technology, and some more ancillary tools for Tungsten. I will come back to those in the near future. Much as I like coding, I also like talking about the cool things that we have made. And, another thing that kept me busy and happy: Continuent and SkySQl are now partners. This has given me quite a lot of work, since we had deliver training to SkySQL field operatives. It was a beautiful experience (teaching to a class of advanced users always is) also because most of the attendees were my former colleagues at MySQL AB. The future looks good. More to come.

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Announcing MariaDB 5.3.5

Monty Program Group Blog — Wed, 29 Feb 2012 20:40:35 +0000

Following closely on the heels of the MariaDB 5.3.4-rc release a couple of weeks ago, the MariaDB project is pleased to announce the immediate availability of MariaDB 5.3.5!

MariaDB 5.3.5 is the first stable (GA) release in the 5.3 series. Details and downloads are available from the following links:

(Debian and Ubuntu packages are available from our mirrored apt repositories. A sources.list generator is available.)

About MariaDB 5.3

The MariaDB 5.3 series introduces many new features, includes MariaDB
5.2, and is based on MariaDB 5.1 & MySQL 5.1. Some highlights of new
features in MariaDB 5.3 include:

subquery optimizations that finally make subqueries usable
many optimizer changes, including Classic Hash Join, Batched Key Access, a new implementation of Multi-Range-Read optimizations as well as Index Condition Pushdown
NoSQL-style interfaces via the HandlerSocket plugin as well as dynamic columns
group commit in XtraDB when the binary log is enabled
Microsoft Windows performance improvements

These are just some of the highlights, and for a more complete list of changes, please see the What is MariaDB 5.3 page.

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Percona Server 5.1.52-rel11.6

MySQL Performance Blog — Tue, 23 Nov 2010 16:48:09 +0000

Percona Server version 5.1.52-rel11.6 is now available for download.

The main purpose of this release is to update the current Percona stable release to the latest version of MySQL 5.1.

Functionality Added or Changed

Percona Server 5.1.52-rel11.6 is now based on MySQL 5.1.52.
New Features Added: None
Other Changes: None

Bugs Fixed

Bug #671764 – innochecksum wasn’t distributed with RPM and .DEB packages. (Aleksandr Kuzminsky)
Bug #673426 – Use of some system variables as command-line options caused a crash or undefined behavior. (Oleg Tsarev)
Bug #673929 – Query cache misses were being reported for some queries when hits were actually occurring. (Oleg Tsarev)
Bug #676146 – The development environment test of log_slow_verbosity=innodb on a slave for row-based replication was not working correctly. (Oleg Tsarev)
Bug #676147 – The development environment test of option log_slow_slave_statements for row-based replication was not working correctly. (Oleg Tsarev)
Bug #676148 – Similar to Bug #676147. A check is now made for the replication type to test. (Oleg Tsarev)
Bug #676158 – Setting the query cache size to 512M caused test failure on low memory systems. (Aleksandr Kuzminsky)

Release Notes for this and previous releases can be found in our Wiki.

The latest downloads are available on our website. The latest source code for Percona Server, including the development branch, can be found on Launchpad.

Please report any bugs found at Bugs in Percona Server.

For general questions, use our Percona Discussions Group, and for development questions our Percona Development Group.

For support, commercial, and sponsorship inquiries, contact Percona.

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Percona XtraBackup 1.4

MySQL Performance Blog — Mon, 22 Nov 2010 19:27:02 +0000

Percona XtraBackup 1.4 is now available for download.

Version 1.4 fixes problems related to incremental backups. If you do incremental backups, it’s strongly recommended that you upgrade to this release.

Functionality Added or Changed

Incremental backups have changed and now allow the restoration of full backups containing certain rollback transactions that previously caused problems. Please see Preparing the Backups and the --apply-log-only option. (From innobackupex, the --redo-only option should be used). (Yasufumi Kinoshita)
The XtraBackup Test Suite was implemented and is now a standard part of each distribution. (Aleksandr Kuzminsky)
Other New Features:
- The --prepare option now reports xtrabackup_binlog_pos_innodb if the information exists. (Yasufumi Kinoshita)
- When --prepare is used to restore a partical backup, the data dictionary is now cleaned and contains only tables that exist in the backup. (Yasufumi Kinoshita))
- The --table option was extended to accept several regular expression arguments, separated by commas. (Yasufumi Kinoshita)
Other Changes:
- Ported to the Percona Server 5.1.47-11 code base. (Yasufumi Kinoshita)
- XtraBackup now uses the memory allocators of the host operating system, rather than the built-in InnoDB allocators (see Using Operating System Memory Allocators). (Yasufumi Kinoshita)

Bugs Fixed

Bug #595770 – Binaries are stripped by rpmbuild, so __os_install_post is redefined to change the default behaviour. (Aleksandr Kuzminsky)
Bug #589639 – Fixed a problem of hanging when tablespaces were deleted during the recovery process. (Yasufumi Kinoshita)
Bug #611960 – Fixed a segmentation fault in “xtrabackup”. (Yasufumi Kinoshita)
Miscellaneous important fixes related to incremental backups.

Release Notes for this and previous releases of Percona Xtrabackup can be found in our Wiki.

The latest downloads are available on our website. The latest source code can be found on Launchpad.

Please report any bugs found at Bugs in Percona XtraBackup.

For general questions, use our Percona Discussions Group, and for development questions our Percona Development Group.

For support, commercial, and sponsorship inquiries, contact Percona.

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Percona Server 5.1.51-rel11.5

MySQL Performance Blog — Thu, 28 Oct 2010 19:53:38 +0000

Percona Community,

Percona Server version 5.1.51-rel11.5 is now available for download.

The main purpose of this release is to update the current Percona stable release to the latest version of MySQL 5.1.

Functionality Added or Changed

Percona Server 5.1.51-rel11.5 is now based on MySQL 5.1.51.
New Features Added: None
Other Changes: None

Bugs Fixed

Bug #661354 – Fixed a problem compiling query_cach_with comments for 5.1.51-rel11.5. (Oleg Tsarev)
Bug #661844 – Fixed a problem with server variables failing test for 5.1.51-rel11.5. (Oleg Tsarev)

The Release Notes for this and previous releases can be found in our Wiki.

The binary packages are available on our website.
The latest source code for Percona Server, including the development branch, can be found on LaunchPAD.

Please report any bugs found at Bugs in Percona Server.
For general questions, use our Pecona-discussions group, and for development questions our Percona-dev group.
For support, commercial, and sponsorship inquiries, contact Percona.

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Percona Server 5.1.50-rel12.1

MySQL Performance Blog — Thu, 14 Oct 2010 16:21:31 +0000

Dear Community,

Percona Server version 5.1.50-rel12.1 RC is now available for download.

Functionality Added or Changed

Percona Server 5.1.50-rel12.1 is now based on MySQL 5.1.50.
New Features Added:
- innodb_lru_dump_restore – Implemented automatic dumping of the buffer pool at specified intervals.
- innodb_buffer_pool_shm – Implemented option ”innodb_buffer_pool_shm_checksum”; when enabled, shared memory buffer pool is checksum validated. This change also fixed these bugs: #643724, #649408, and #649393. (Yasufumi Kinoshita)
- innodb_expand_import – Implemented more exact checking to avoid corruption of the ”.ibd” file using ”innodb_expand_export”. (Yasufumi Kinoshita)
- remove_eol_carret – Implemented a MySQL client option to handle end-of-line in BLOB fields differently. This change also fixed bug #625066. (Sasha Pachev)
- response_time_distribution – Counts queries with very short execution times and groups them by time interval. (Oleg Tsarev)

Bugs Fixed

Bug #608992 – Added symbolic info to Percona Server binary to help in debugging. (Aleksandr Kuzminsky)
Bug #624362 – Corrected wording in an InnoDB error message regarding too many locks printed. (Vadim Tkachenko)
Bug #625066 – Fixed a problem handling end-of-line in BLOB fields in the MySQL client. (Sasha Pachev)
Bug #640924 – Fixed a crash caused by innodb_doublewrite_file. (Yasufumi Kinoshita)
Bug #643650 – Speeded up InnoDB shutdown when using shared memory buffer pool. (Yasufumi Kinoshita)
Bug #643724 – Fixed an InnoDB crash when shared memory buffer pool was enabled. (Yasufumi Kinoshita)
Bug #649408 – Fixed a problem causing a crash on startup when using shared memory buffer pool. (Yasufumi Kinoshita)
Bug #649393 – InnoDB now recreates the shared memory segment for the buffer pool automatically after a crash. (Yasufumi Kinoshita)
Bug #649623 – Fixed an error when compiling Percona Server 5.1.50-rel12.1 on FreeBSD (Oleg Tsarev)
Bug #650977 – Fixed failed tests. (Oleg Tsarev)

The binary packages are available on our website.
The Release Notes for this and previous releases can be found in our Wiki.

The latest source code for Percona Server, including the development branch, can be found on LaunchPAD.

Please report any bugs found at Bugs in Percona Server.
For general questions, use our Pecona-discussions group, and for development questions our Percona-dev group.

For support, commercial, and sponsorship inquiries, contact Percona.

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