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Displaying posts with tag: chris calender (reset)
[Plus] readers choice 2012 : It’s time to vote!

Oh yes, 2012 was an incredible year for the MySQL Community!
That’s why I would like to change the rules this year and I would like to offer you a new survey for this [Plus] reader’s choice 2012.

Community users, bloggers and events made the whole community last year, tell us how you used this community?
It will only take 5 minutes of your precious time, votes will be closed Jan. 31.

Vote for what you used! (with your heart, again…)

Note: There is a poll embedded within this post, please visit the site to participate in this post's poll. Note: There is a poll embedded within this post, please visit the site to participate in this post's poll. Note: There is a poll embedded within this post, please visit the site to participate in this post's poll. Note: There is a poll embedded within this post, please visit the site to participate in this post's poll.

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Building MariaDB 5.1 on Windows

Recently, I found myself needing MariaDB 5.1.60 for Windows for some testing purposes. Therefore, I needed to build it from source. I ended up using what I’d call a “blend” of the commands listed in this “how-to” and the readme file INSTALL-WIN-SOURCE, so I thought I’d post those steps.

  1. Download 5.1.60 MariaDB source from here.
  2. cd C:\mariadb-5.1
    
  3. win\configure.js
    
  4. cmake .
    
  5. VS: File -> Open -> Solution -> MySql.sln
  6. VS: Build -> Build Solution
  7. VS: Right-click “PACKAGE” -> Build (in “Solution Explorer” View)

That’s it.

Let’s fire it up:

MariaDB> select version(); …
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MySQL High Availability Manager (MHA) 0.53 has been Released and Get Support for it at SkySQL

 

I just wanted to let you all know that MHA for MySQL (Master High Availability Manager and tools for MySQL) version 0.53 has been released.

Yoshinori Matsunobu discusses the release in much more detail here:

http://yoshinorimatsunobu.blogspot.com/2012/01/mha-for-mysql-053-released.html

The full MHA 0.53 changelogs are here:

http://code.google.com/p/mysql-master-ha/wiki/ReleaseNotes

MHA 0.53 can be downloaded from here:

http://code.google.com/p/mysql-master-ha/downloads/list

And if you would like support for MHA, simply contact SkySQL:

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Tracking Server Variables, Documentation, Manuals, Changelogs for MySQL, InnoDB, MariaDB, and XtraDB

I find myself constantly looking up server variables (and manuals and changelogs) for MySQL, MariaDB, and XtraDB, which versions they are in, and so forth. So I finally created a couple pages which contain the links to all of these various bits of information across the various flavors of MySQL.

I’ve been using them every day, so I thought some others might want to bookmark these as well.

I’ve created the following:

o Changelogs
o Documentation
o Server Variables
o InnoDB Plugin Versions

The Changelogs page contains links for MySQL 3.23 up through 5.6, MariaDB 5.1 – 5.3, XtraDB 5.1 – 5.5, Xtrabackup 1.3 – …

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Microseconds and MariaDB

Most of you are all aware of the lack of microsecond support in MySQL.

This has been a long-standing issue:

http://bugs.mysql.com/bug.php?id=8523

*cringe* .. sorry, just my normal reaction after seeing that bug, err feature request, again and again over the past 6+ years ..

However, I think many people do not realize that microseconds are supported by MariaDB in version 5.3+, which for all intensive purposes is a drop-in replacement for MySQL.

So if you need microsecond support for MySQL, you should definitely check out MariaDB.

“In MariaDB 5.3, the TIME, DATETIME, and TIMESTAMP types, along with the temporal functions, CAST and dynamic columns, now support microseconds. The datetime precision of a column can be specified when creating the table with CREATE TABLE”

Also:

“Generally, the precision can be …

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MySQL Windows Users – Use Grep to Search MySQL Source Code

For Windows users, if you try searching the MySQL source code for various strings, you know you will often come up empty with the built-in Windows search.

It wasn’t too long ago and I was searching the source for “MALLOC_OVERHEAD”. My Windows search came up empty, and someone suggested I try grep for Windows.

Well, I downloaded it, extracted it to the location I wanted, and added the .exe to the $PATH.

Now I can grep away!

See the new results when searching for “MALLOC_OVERHEAD”:

C:\mysql-5.5\mysql-5.5>grep -r "MALLOC_OVERHEAD" .
./client/mysql.cc:   (longlong) 2*1024L*1024L*1024L, MALLOC_OVERHEAD, 1024, 0},
./client/mysql.cc:   REQUIRED_ARG, 16384, 1024, 512*1024*1024L, MALLOC_OVERHEAD, 1024, 0},
./client/mysqldump.c:   (longlong) 2L*1024L*1024L*1024L, MALLOC_OVERHEAD, 1024, 0},
./client/mysqldump.c: …
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Where’s the Updated MySQL Source Code on Launchpad?

I know I’m not the only one to have noticed that all MySQL branches on Launchpad have not been accessible since September 10th, 2011, nearly 1 month.

Just visit here:

https://code.launchpad.net/~mysql/mysql-server/mysql-trunk

You’ll see it says:

“This branch may be out of date, because Launchpad has not been able to access it since 2011-09-10.”

I’d been seeing “No revisions to pull.” messages latley, when running “bzr pull”, but didn’t give it a whole lot of thought until reading the above note on Launchpad today.

Is it due to the recent security breach (where mysql.com was hacked and infected some visitors with malware)? Well, I doubt it since this started on 9/10/2011 and the breach, according to The Register, occurred on 9/26/2011 (some 2 weeks later):

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Setting up Perl on Windows for MySQL Scripts (mysqldumpslow, mysql_explain_log, etc.)

This article is just a how-to for setting up Perl on Windows in order to use the perl scripts provided with MySQL, such as mysqldumpslow.pl or mysql_explain_log.pl.

Now, you might say there is a section on this topic in the MySQL manual, to which I’d agree. But, this was for ActiveState Perl 5.6. The latest ActiveState Perl is 5.12, so thoese instructions are a bit out-of-date. Also, there are some helpful “User Comments” on that same page, but again, those are slightly out-of-date in the ActiveState 5.12. So, I thought I’d just post the steps I took in order to set this up.

First, download and install ActivePerl. Click the “Download ActivePerl 5.12.4 for Windows” button (choose either 32-bit or 64-bit). You’ll be prompted to save an msi file. Save …

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Temporary files, binlog_cache_size, and row-based binary logging

Even when the output of EXPLAIN doesn’t show “using temporary”, a temporary file may still be used in certain cases.

That’s not to say the query needs the temporary file to actually resolve the query (like what you’d see from the need for a derived table). But rather, the temporary file I’m speaking of is due to binary logging.

In particular, you can see this easily if using InnoDB, (most commonly) row-based binary logging, and you issue a large transaction, say a large UPDATE (large meaning something larger than the size of binlog_cache_size). In this case, you’ll notice a temporary file being …

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Chris on SkySQL

As some of you already know, I too have recently left the MySQL Support Team at Oracle.

However, I am happy to report that I have joined SkySQL!

So I’ll remain in the MySQL Community, and will still be providing support for MySQL.

I am grateful to everyone I’ve worked with and to everyone who has had a hand in improving MySQL (no matter how small or large) over the years! It’s been a blast working with such dedicated and passionate people, and I look forward to many more years of the same now at SkySQL!

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