Month: March 2013

Speaking on the media: OurSQL, Reversim

MySQL

I had the pleasure of speaking on two excellent podcasts:

OurSQL

No need for me to introduce this podcast. I just have to say it was only when I interviewed that I realized the amount of work taken for producing one single cast. Kudos to Sheeri & Gerry and Rich Goyette the sound producer and thank you for your kind hospitality!

You can find the cast on OurSQL Episode 129: New and Extended, where we speak about the upcoming Percona Live MySQL Conference & Expo, 2013.

Reversim

This is an Israeli, Hebrew speaking podcast, and is undoubtedly the queen of Software Development podcasts here. Run by two enthusiast, veteran, open source keen developers, this is a must hear podcast if your Hebrew isn’t rusty 😉 Thanks Ori & Ran for having me again!

I was honored to be interviewed for the 3rd time there, again speaking about MySQL and its ecosystem. In this recent podcast, I speak about the new 5.6 release, highlighting some features; about MariaDB; the Galera cluster technology; LGPL connectors; Percona Live 2013.

Find the cast on the reversim website: 171 MySQL 5.6

My next speaking event will be at the conference itself; more on that later.

MySQL Stored Routines Debugger & Debugging API: sneak preview II, video

MySQL

This is the 2nd sneak preview of common_schema‘s rdebug: debugger & debugging API for MySQL stored routines (see 1st preview here).

rdebug will be released as part of common_schema, free and open sourced.

In this sneak preview I present:

  • Compiling multiple routines with debug info
  • Starting/stopping a debug session
  • Step-over, step-in, step-out
  • Showing stack trace
  • Showing the next-statement to execute
  • Viewing and manipulating local routine variables
  • Misc. meta routines

The quick technical overview

rdebug is a server-side mechanism, itself written in MySQL stored routines. It manipulates your routines by injecting debug code (easily removed afterwards).

To debug a routine you will need two connections: one is the debugging connection, and the other is the worker connection. The debugger connection attaches itself to the worker connection, where your routines execute.

rdebug is controlled by an API of stored routines. This means any GUI tool may choose to use rdebug as its routine debugging mechanism. Your are not bound to a specific tool, a specific OS or framework. You may choose to invoke the API via command line, if you like; it’s all in your server.

A video is worth a thousand blogs Continue reading » “MySQL Stored Routines Debugger & Debugging API: sneak preview II, video”

Cheating mysqlsandbox to install MariaDB 10.0

MySQL

mysqlsandbox is version-aware. The new 5.6 version, for example, requires special care because of the system InnoDB tables or otherwise modified system tables.

At this moment, it will refuse to install MariaDB 10.0 (alpha):

bash$ make_sandbox /tmp/mariadb-10.0.1-linux-x86_64.tar.gz 
unpacking /tmp/mariadb-10.0.1-linux-x86_64.tar.gz
unsupported version 10.0

This is perfectly legitimate, and I have no quarrel with this fact. However, I did want to setup MariaDB 10.0 as a sandbox.

As it turns out mysqlsandbox relies on MySQL package naming conventions to detect the version: the fact that a tgz file distribution is named mariadb-10.0.1-linux-x86_64.tar.gz and extracts onto mariadb-10.0.1-linux-x86_64, tells mysqlsandbox that this is version 10.0.1. Easy enough to cheat, then: pick a version that mysqlsandbox will work with, and which is compatible sandbox-wise with your own, and do the renames. For that matter, I picked 5.5, and, actually, made it 5.5.100: Continue reading » “Cheating mysqlsandbox to install MariaDB 10.0”

Percona Live 2013 news: Oracle, BoF, Lightning Talks

MySQL

Oracle

Oracle? Oracle! We’re extremely happy to have Oracle as presenter in Percona Live 2013!

You can expect three sessions by Oracle engineers:

• MySQL 5.6: Performance Benchmarks, Tuning, and Best Practices – Dmitri Kravtchuk

• MySQL 5.6: What’s New in InnoDB – Sunny Bains

• MySQL 5.6: Redefining Replication – Luís Soares

And Tomas Ulin will present the obligatory “State of the Dolphin” keynote.

Skip my part in this conference for the moment; I’m very happy this is happening. For the community this is an obvious gain. I also wish to congratulate both Oracle and Percona for pulling this off; both parties deserve warm words here.

See announcement here.

BoF

Birds of a Feather schedule is published. This happens on Tuesday, second day of the conference and first day of conference sessions, 6:00pm to 7:00pm. The BoF sessions are reviewed by the conference committee.

Lightning Talks

Lightning talks are very short, rapid talks. We have 9 talks, totaling at about one hour. Giuseppe Maxia is orchestrating the talks. The talks are presented during the Community evening, Wednesday, 5:30pm to 8:30pm, where community awards are also presented. Giuseppe will naturally elaborate on that.

For me excitement is quickly building up!