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Displaying posts with tag: mariadb (reset)

Another awesome Conference: IT-Tage 2016
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Ahoi,There will be the IT-Tage 2016 conference. Where I'm going to give two talks.One will be about Docker being more then a technical revolution.The other one is about Best Practices for Docker+MySQL/MariaDB \o/
As always: fun first!Erkan

Speaking in June 2016
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I have a few upcoming speaking engagements in June 2016:

  • Nerdear.la – June 9-10 2016 – Buenos Aires, Argentina – never been to this event but MariaDB Corporation are sponsors and I’m quite excited to be back in Buenos Aires. I’m going to talk about the MySQL ecosystem in 2016.
  • SouthEast LinuxFest – June 10-12 2016 – Charlotte, NC, USA – I have a few talks here, a bit bummed that I’m going to be missing the speaker dinner, but I expect this to be another great year. Learn about …
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systemd: a revolution gets used to itself
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New versions of systemd (like in Ubuntu 16.04) are able to configure pid Cgroups (ulimit -u via Cgroups) using TasksMax.

Check the commit implementing TaksMax.

Author: Lennart Poettering <lennart@poettering.net>
Date:   Fri Nov 13 19:28:32 2015 +0100

    core: enable TasksMax= for all services by default, and set it to 512

    Also, enable TasksAccounting= for all services by default, too.

    See:

    http://lists.freedesktop.org/archives/systemd-devel/2015-November/035006.html

But not we’ve got silly defaults:

$ systemctl show -p TasksMax docker
TasksMax=512

$ …
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I am now a member of team MariaDB
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Monday I started at MariaDB working on ColumnStore. My interest in column store technology extends way back to the days as the MySQL evangelist at Kickfire, which was a compressing column store and "SQL CHIP" appliance. My initial tasks are documentation related, but I'll be helping with development, and of course testing it with Shard-Query, which is a great stress testing system.

London roadshow wrap-up, see you in Paris next week
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Just a few days ago, I presented at the MariaDB Roadshow in London, and I had a lot of fun. While I had canned slides, I did know the topic intimately well, so it was good to get further in-depth. In addition, we had these MasterMind sessions, basically the place to get one-on-one time with Anders/Luisa/or me, I noticed that pretty much everyone said they were buying services afterwards (which more or less must mean the event was rather successful from that standpoint!).

In addition to that, I was happy to see that from attendee …

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MySQL/MariaDB cursors and temp tables
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In MariaDB and MySQL, cursors create a temporary table.

Does this statement deserve a whole blog post? Apparently not. However, in some cases one does not expect a temporary table to be created:

  • SELECT ... FOR UPDATE: An exclusive lock is created, yes, but you still read data from a temporary table.
  • SELECT FROM a temporary table: you are reading from a temporary tables, yes, but an internal temporary table is created anyway.
  • Impossible WHERE and LIMIT 0.

A quick example:

CREATE TEMPORARY TABLE …
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London in May 2016
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I’m happy to be back in London in May 2016, to talk at two events:

  1. The London MySQL Meetup GroupMonday May 9 – 6.30 PM – 9.00 PM – options for High Availability in the ecosystem that one would consider today. This is a cut down from my Percona Live tutorial, which had about 88 registered attendees and about that amount showed up and asked questions even through the break and after. I had a lot of fun, and I expect I will have similar fun in London talking about this area that has changed a lot in …
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Video of my Percona Live Talk: Why would I run MySQL/MariaDB on POWER anyway?
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Good news everyone! There’s video up for the talk I gave at Percona Live in April 2016 up: Why would I run MySQL/MariaDB on POWER anyway?

The talk is a general overview of POWER and why MySQL/MariaDB may be a good fit.

Fun with Bugs #42 - Bugs Fixed in MySQL 5.7.12
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MySQL 5.7.12 was released more than 2 weeks ago. New features introduced there in a form of "rapid plugins" are widely discussed, but I am more interested in bugs reported by MySQL Community users that are fixed there. Unfortunately I do not see MySQL Community Release Notes by Morgan (like this) for quite a some time, so I have to continue describing key bug fixes and name people who reported and verified bugs in my "Fun with Bugs" series.

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Building MaxScale 1.4.2 from GitHub on Fedora 23
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MariaDB MaxScale is mentioned in many blog posts recently. It's Application of the Year 2016 after all! I'd like to test it, follow posts like this etc, all that on my favorite and readily available testing platforms that are now Ubuntu of all kinds and, surely, Fedora 23 (on my wife's workstation, the most powerful hardware at hand).

My old habits force me to build …

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