The latest from the MySQL community

The ASF threatens to withdraw from the JCP. The demise of the Symbian Foundation. And more.

Follow 451 CAOS Links live @caostheory on Twitter and Identi.ca, and daily at Paper.li/caostheory
“Tracking the open source news wires, so you don’t have to.”

# The Apache Software Foundation said it will terminate its relationship with the JCP if its rights are not upheld.

# The Symbian Foundation is no more. It will transition to become a licensing operation for the Symbian OS.

# Gluster raised $8.5m series B funding from Index Ventures and Nexus Venture Partners.

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You probably saw the Twitter storm over Oracle's pricing changes and InnoDB in the last few days. The fear about Oracle removing InnoDB from the free version of MySQL was baseless -- it was just a misunderstanding. Still, in the years since MySQL has been acquired by Sun, and then by Oracle, many MySQL users have been uncertain about the future. We think it's important for us to make our own position and plans clear and public, so that there is no fear or doubt about what Percona will do.

We want to begin by saying "thank you" to those who built and maintained MySQL over the years. Many of us at Percona came from the original MySQL team. We know that it took a decade-long group effort from Monty, David, Marten and many others to develop it into the world's leading open-source database. Much of their work is never publicly recognized, but it is the foundation of our own work, and we're indebted to it. MySQL development suffered some detours …

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_cache_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 …

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)
  • …

We've just announced a new support offering for MySQL. There's a press release here, and product information page here. But what does this new service really mean for you, in practical terms? This is actually important -- it will open up a range of new choices for you. I'll explain two major points that matter to you.

Before I begin, I want to make it clear that in some ways, what we're offering is something we've always offered. That is actually why it took us a while to re-align the product a bit. We thought we were serving you fully. You told us that wasn't really true. Thank you. We've listened.

1. Sensible Pricing

We've always offered pay-as-you-go support, and we've had a dedicated support staff for a while. The missing ingredient was flat-rate pricing. Big …

Microsoft sues Motorola. Oracle says no to LibreOffice. Time to fork Java? And more.

Follow 451 CAOS Links live @caostheory on Twitter and Identi.ca, and daily at Paper.li/caostheory
“Tracking the open source news wires, so you don’t have to.”

# Microsoft is suing Motorola over alleged Android patent infringements.

# Oracle confirmed to SJVN that it will not be working with the Document Foundation on LibreOffice.

# Sean Michael Kerner reported that Red Hat has settled an alleged patent infringement case with IP firm Acacia Research.

# Greg Luck …

During my visit to Moscow, Russia next month I’m going to give a full day training/tutorial presentation on Diagnosing and Fixing MySQL Performance Problems . This even will be based on updated and expanded tutorial from MySQL Conference & Expo which was so popular it was sold out earlier this year. This also will be the only full day training event open to the public during this trip. There are few conference talks, user meetings and private training engagements which I’m doing on this trip as well. I’ll blog about these later.

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Dear Community,

Starting with this release, we introduce a new release model for Percona Server. From now on, we will have both Stable and Release Candidate releases. Release Candidates will introduce new features not yet available in Stable releases.

Along with new features, our new 5.1.49-12.0 RC contains a couple of patches from the Facebook-MySQL tree - https://launchpad.net/mysqlatfacebook . Of particular note is better integration with FlashCache.

We also introduce the very interesting new feature called ”Permanent InnoDB Buffer Pool”  (sponsored by a Well Known Social Network site). It allows you to keep the InnoDB buffer pool in memory between restarts of MySQL servers.
This can result in a significant decrease in warmup time after MySQL restarts.

Starting with this release, we will also provide special …

We're opening up registration for our new training courses today.  In short: we are moving from two days to a new four-day format.  The new additions are created by:

• Splitting our current InnoDB day in half. We now have one day for DBAs, and one day just on InnoDB topics.
• A new Operations Day - covering how to maintain MySQL in production.

Our developer course has also undergone revision, and we now have more query tuning examples, and a new instrumentation chapter.

What is operations training?

Many companies split their …

Recently we had couple posts dedicated to performance monitoring, i.e. Color code your performance numbers, Performance Optimization and Six Sigma, so you may understand we consider stability of performance numbers as one of important area for database management.

That's why we decided to add histogram of queries response times into Percona Server, and our software engineer Oleg Tsarev implemented this feature. The feature adds new INFORMATION_SCHEMA table QUERY_RESPONSE_TIME
( full docs are on page response_time_distribution), which looks like

time count
0.000001 53
…