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Displaying posts with tag: Events (reset)
Something to know about the event scheduler and replication



MySQL 5.1 has been GA for 4 months now, and I am sure that many people have been using the event scheduler.
There is something that you must know if you are using the event scheduler in a replicated environment.
The important thing to know is that, when you use the events in replication, by default the event is active on the master only. The event creation is replicated, but the event on the slaves is not active

The reference manual explains it in detail.
There are two things that you must remember, if you are …

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Sun Nordic Software Roadshow 2009

Two down, one to go! Last week, I went to Gothenburg and Stockholm for the Sun Nordic Software Roadshow. This week, it’s Helsinki coming up.

These roadshows are a set of presentations and form an opportunity to interface with Sun customer and partners, and lots of MySQL users. It’s about MySQL, Glassfish, Open ESB, Open SSO and identity management.

For Gothenburg and Stockholm, the first keynoter was Ola Ahlvarsson. He’s a serial entrepreneur that survived the dot com boom and now makes a comfortable living talking common sense about Internet, and hosting the Scandinavian Interactive Media Event (

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Calendar of Open Source, IT, Industry-specific Events

InitMarketing has made its calendar of world-wide conferences and trade fairs related to Free and Open Source Software, IT and specific industries available to the public.

It currently includes 122 events in 17 countries taking place in 2009. 43 of them in Germany, 69 in USA. We use this calendar when planing events for our customers, thus we’ll regularly update it. Please let us know of any events which are not on our radar yet by commenting to my blog or commenting at the bottom of the events page.

FOSDEM Sunday 13:15-14:15: Q&A on recent developments at Sun, MySQL Roadmap

Given the changes announced this week, I have updated my original plans for my presentation on Sunday. I was going to talk about Social networking, but am now changing it to a very interactive Q&A session.

I expect people are asking themselves

  • What has changed?
  • What will happen now?
  • What are the consequences for the MySQL roadmap?
  • Are there other consequences for the MySQL community?

and I will attempt at answering these questions interactively during FOSDEM.

Towards the end of next week, after internal coordination, I plan to share some further thinking on the “what will happen now” front with my blog readers.

What also I plan to do during …

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FOSDEM: See you in Brussels on Sat-Sun 7-8.2.2009

Like a number of other Sun people, whether MySQLers or not, I will travel to Brussels next weekend, for FOSDEM ‘09, an acronym which stands for the Free and Open Source Software Developer’s European Meeting.  

If you think you’re late in registering, or if you don’t have a budget, don’t worry. Entrance is free, and registration isn’t necessary. “Just come to the campus and enjoy the conference”, the FOSDEM site stresses.

As for MySQL, we have a developers room on Sunday as follows:

Sun  09:00-10:00
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On Open Source and Open Competition in a not-so-Open World

Open Source is global in nature. You can develop a database in, say, Finland or Sweden, and become known in, say, Ukraine or the United States.

This would imply that Open Source knows no borders.

In practice, borders hamper Open Source work a lot. I have been familiar with the hassle involving MySQLers in Russia and the Ukraine trying to get Schengen (European Union) and US visas for meetings. And I have myself gone through a lot of hassle travelling to Russia and once even (out of my own stupidity and carelessness, though) been denied entry to India when I already was on Indira Gandhi airport in New Delhi.

But now, I’ve experienced what I had expected the least:

Several Sun Microsystems Inc employees, especially related to the Database Group, have been denied short stay business visas to Australia, over the last few months, …

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Q&A on MySQL 5.1

Listening to Sheeri's presentation on MySQL 5.1, I saw that there are a few questions left unanswered. I am listing here some of the questions that I found interesting, plus a few from an early webinar on the same topic.

Q: does Partitioning physically split data?
A: No. Some engines (MyISAM, Archive) do a physical split, but this is not necessary, as you see if you apply partitioning to a InnoDB table. Partitioning is a logical split of data, for easy retrieval. It is completely transparent to the user.
Q: Can you set partitions to different servers?
A: No. Partitions are logical parts of one table within one server. Partitioning through the Federated engine is not supported.
Q: How efficient are Row-Based …
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Back from Ukraine and Russia

Now being back from last week’s trip to Ukraine and this week’s trip to Russia, it’s time for an overview.

MySQL was prominently present at both Sun events, the one in Kiev on 26.11.2008 and the one in Moscow last Tuesday 2.12.2008. It was good to discuss with local Sun guys, and to meet MySQL community people and colleagues in both places.

The two first pictures in this post are from the community event at a university of economy in Moscow.

Like elsewhere, I started in the local language (which, perhaps surprisingly, frequently seems to be Russian also in Ukraine), followed by a “MySQL in the Web Economy” presentation in English.

Russia and Ukraine are interesting places, so I …

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A chocolate pie for MySQL™ 5.1 GA

 
As you probably already know, yesterday the GA version of MySQL™ 5.1 has been released :)

To celebrate this great event, I have organized a little event with some of my friends @ Trieste University, Italy.

Since I am a physics alumn and I still have some friends who study physics, I decided to organize a sort of unofficial “Trieste MySQL™ 5.1 GA Day” to have some funny moments with them at the Physics Department ;)

I am using MySQL™ 5.1 since the third public version (5.1.5-beta, January 2006) and I have installed and tested all the 24 versions from 5.1.5-beta :)

For the occasion, I bought a chocolate pie and a good Italian sweet wine ( …

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MySQL 5.1 Use Case Competition: Position 3

The GA announcement of MySQL 5.1 is getting closer by the minute! So it’s time for Position 3 in the MySQL 5.1 Use Case Competition.

3. Corrado Pandiani (Football Club Internazionale Milano Spa, Milan, Italy): Using Partitioning and Event Scheduler for online logging & real-time stats. See Corrado’s DevZone article, and his blog.

Thanks and congratulations, Corrado! I hope you are in a position to take advantage of your free MySQL Conference & Expo 2009 Pass, including a dinner with MySQL co-founder …

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